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Comparative Study on Microstructure and Mechanical Properties of Coarse-grained WC-based Cemented Carbides Sintered with Ultrafine WC or (W+C) as Additives
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作者 于淞百 闵凡路 +6 位作者 LI De NOUDEM Guillaume Jacques ZHANG Hailong MA Jichang ZHAO Kui YAO Zhanhu 张建峰 《Journal of Wuhan University of Technology(Materials Science)》 SCIE EI CAS CSCD 2024年第2期399-409,共11页
The effects of ultrafine WC(WC_(UF),0.5μm) or W(1μm) and C(0.3μm)(W+C)_(UF) additives on the densification,microstructure and mechanical properties of coarse-grained cemented carbides were compared systematically.O... The effects of ultrafine WC(WC_(UF),0.5μm) or W(1μm) and C(0.3μm)(W+C)_(UF) additives on the densification,microstructure and mechanical properties of coarse-grained cemented carbides were compared systematically.Overall,the cemented carbides with WC_(UF)/(W+C)_(UF) additives are almost fully densification to be higher than 99%,and the average grain size is kept above 2.8μm.The WC_(UF) additive assists grains to(truncated)trigonal prism shape by two dimensional(2D) growth,whereas the(W+C)_(UF) additive assists grains to rounded shape by three dimensional(3D) growth,lowers WC contiguity and increases face-centered-cubic Co.The hardness and bending strength of(75WC_(C)-15WC_(UF))-10Co are 86.6 HRA and 2 272 MPa,respectively,both higher than those of(75WC_(C)-15(W+C)_(UF))-10Co,which could be ascribed to the enhanced densification and unblemished grains.However,the fracture toughness of the(75WC_(C)-15(W+C)_(UF))-10Co is 23.5 MPa·m^(1/2),higher than that of the(75WC_(C)-15WC_(UF))-10Co due to the uniform WC-Co structure and flexible binder phase. 展开更多
关键词 coarse-grained WC-based cemented carbide ultrafine WC ultrafine(W+C) microstructure mechanical properties
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Properties and microstructure of VC/Cr_3C_2-doped WC/Co cemented carbides 被引量:7
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作者 LEI Yiwen SUN Jing +2 位作者 DU Xiwen ZHAI Qi HU Shengliang 《Rare Metals》 SCIE EI CAS CSCD 2007年第6期584-590,共7页
This paper deals with the effects of codoped VC/Cr3C2 and sintering temperature on the magnetic and mechanical properties of ultra-fine grained WC-12%Co alloys. Results show that the synergistic action of doped VC/Cr3... This paper deals with the effects of codoped VC/Cr3C2 and sintering temperature on the magnetic and mechanical properties of ultra-fine grained WC-12%Co alloys. Results show that the synergistic action of doped VC/Cr3C2 in optimal proportion enhances both the hardness and transverse rupture strength (TRS) of the alloys, with more homogeneous microstructtLre. When the alloy is sintered at 1430℃ and with 0.5% Cr3C2/0.2% VC, the TRS reaches 3786 MPa, the hardness is 91.7 HRA and the grain size smaller than 0.6 μm. The numerical analyses on grain growth during the sintering process show that both VC precipitating on the WC grain boundary and Cr3C2 dissolving in the Co phase decrease the solid/liquid interfacial energy γ, the process of dissolution and reprecipitation is greatly retarded and the coarsening of WC grains is inhibited. 展开更多
关键词 grain growth inhibitor ultra-fine grain cemented carbides MICROSTRUCTURE transverse rupture strength (TRS)
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Growth kinetics of cubic carbide free layers in graded cemented carbides 被引量:6
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作者 Liu-yong Shi Yi-min Liu +2 位作者 Ji-hua Huang Shou-quan Zhang Xing-ke Zhao 《International Journal of Minerals,Metallurgy and Materials》 SCIE EI CAS CSCD 2012年第1期64-71,共8页
In order to reveal the formation mechanism of cubic carbide free layers (CCFL), graded cemented carbides with CCFL in the surface zone were fabricated by a one-step sintering procedure in vacuum, and the analysis on... In order to reveal the formation mechanism of cubic carbide free layers (CCFL), graded cemented carbides with CCFL in the surface zone were fabricated by a one-step sintering procedure in vacuum, and the analysis on microstructure and element distribution were performed by scanning electron microscopy (SEM) and electron probe micro-analyzer (EPMA), respectively. A new physical model and ki- netic equation were established based on experimental results. Being different f^om previous models, this model suggests that nitrogen diffu- sion outward is only considered as an induction factor, and the diffusion of titanium through liquid phase plays a dominative role. The driving force of diffusion is expressed as the differential value between nitrogen partial pressure and nitrogen equilibrium pressure essentially. Simulation results by the kinetic equation are in good agreement with experimental values, and the effect of process parameters on the growth kinetics of CCFL can also be explained reasonably by the current model. 展开更多
关键词 graded materials cemented carbides DIFFUSION KINETICS
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Change in relative density of WC-Co cemented carbides in spark plasma sintering process 被引量:4
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作者 SUN Lan LIN Chenguang +2 位作者 JIA Chengchang JIA Xian XIAN Mina 《Rare Metals》 SCIE EI CAS CSCD 2008年第1期74-77,共4页
The relative density of WC-Co cemented carbides during spark plasma sintering(SPS) was analyzed.Based on the change in displacement of the ram in the SPS system,the relative densities in the sintering process can be... The relative density of WC-Co cemented carbides during spark plasma sintering(SPS) was analyzed.Based on the change in displacement of the ram in the SPS system,the relative densities in the sintering process can be achieved at different temperatures.The results indicated that densification of the samples started at near 900°C,the density rapidly reached its maximum at the increasing temperature stage,in which the temperature was lower than the sintering temperature of 1200°C,and most of the densification took place in the stage.Besides,the theoretical values were consistent with the experimental results. 展开更多
关键词 spark plasma sintering relative density WC-CO cemented carbides
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β→α Transformation of γ-Phase in Sintered WC-Co Cemented Carbides 被引量:4
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作者 Shourong LIU (Tianjin Institute of Hard Alloy Tianjin 300222, China)Yi LIU (Shandong University Jinan 250100, China) 《Journal of Materials Science & Technology》 SCIE EI CAS CSCD 1996年第5期398-400,共3页
Varying the morphology and the structure of γ-phase (Co-base Co-W-C solid solution) by means of altering the cooling rate and the preparing method of liquid sintered WC-Co cemented carbides samples, the mechanism of ... Varying the morphology and the structure of γ-phase (Co-base Co-W-C solid solution) by means of altering the cooling rate and the preparing method of liquid sintered WC-Co cemented carbides samples, the mechanism of fcc→hcp transformation of γ-phase in WC-Co alloy has been explored. The results show that, the cooling rate is an important affecting factor on fcc→hcp transformation of γ-phase and the fcc→hcp transformation is mainly a diffusive type when cooling WC-Co samples above room temperature 展开更多
关键词 WC CO Phase in Sintered WC-Co cemented carbides Transformation of
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Sintering characteristics and microstructure of WC-Co-VC/Cr_3C_2 ultrafine cemented carbides 被引量:3
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作者 LEI Yiwen WU Enxi 《Rare Metals》 SCIE EI CAS CSCD 2009年第5期482-486,共5页
The sintering characteristics, microstructure, and mechanical properties of ultrafine WC-12%Co-0.2%VC/0.5%Cr3C2 cemented carbides were investigated. Dilatometric and differential thermal analyses (DTA) indicate that... The sintering characteristics, microstructure, and mechanical properties of ultrafine WC-12%Co-0.2%VC/0.5%Cr3C2 cemented carbides were investigated. Dilatometric and differential thermal analyses (DTA) indicate that the compacts start to shrink at 600°C, the shrinkage rate peak is at 1190°C, and the liquid formation temperature is lower than the W-C-Co eutectic temperature (1330°C). Microstructure analysis results show that the cemented carbides with fine and homogeneous microstructure were obtained when sintered at 1430°C. Continuous and discontinuous grain growth was suppressed due to the synergistic action of VC/Cr3C2. The transverse rupture strength (TRS) of the samples reaches 4286 MPa, with the hardness HRA 92.1. The fine and homogeneous microstructure, alloy strengthening, and different phase constitutions of binder in the cemented carbides result in high hardness and TRS. Continuous and discontinuous grain growth was observed in the cemented carbide sintered at 1450°C, which results in significant decreases of hardness and TRS. It indicates that VC/Cr3C2 additions in the cemented carbides can only suppress the grain growth at a certain temperature. 展开更多
关键词 cemented carbides sintering characteristic grain growth MICROSTRUCTURE mechanical properties
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MAGNETIC PROPERTY OF BINDER IN WC-Co CEMENTED CARBIDES 被引量:2
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作者 Liu Shourong 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 1992年第3期83-86,共4页
Tianjin Institute of Hard Alloy,Tianjin 300222,China ABSTRACT The effects of solutes of wolfram and carbon on specific saturation magnetization(4πσ)of cobalt have been examined on the basis of the measurement of Ana... Tianjin Institute of Hard Alloy,Tianjin 300222,China ABSTRACT The effects of solutes of wolfram and carbon on specific saturation magnetization(4πσ)of cobalt have been examined on the basis of the measurement of Ana for hexagonal typeα-Co and cubic typeβ-Co.The Co-W-C solid solution simulative alloys have been fabricated according to binder composition in WC-Co cemented carbides and the effect of its component and structure on its Ana has been discussed too.It is pointed out that the Co phase structural factor must be considered as measuring the Ana of WC-Co cemented carbides. 展开更多
关键词 COBALT WC-Co cemented carbides Co-W—C binder specific saturation magnetization(4πσ)
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Effects of Phosphorus Additions on Microwave Sintering Properties of Uitrafine WC-10Co Cemented Carbides 被引量:1
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作者 全峰 周建 《Journal of Wuhan University of Technology(Materials Science)》 SCIE EI CAS 2007年第4期725-727,共3页
Using the microwave sintering technology, the effects of phosphorus (P) additions on the microstructure and properties of the ultrafine WC-10Co alloys were investigated. The experimental results show that with only ... Using the microwave sintering technology, the effects of phosphorus (P) additions on the microstructure and properties of the ultrafine WC-10Co alloys were investigated. The experimental results show that with only 0.3wt% P additions, full density WC-10Co cermets were obtained at temperature of 1250℃, which is 70 ℃ lower than that of the undoped counterparts. Lower sintering temperature can result in finer WC grain growth; therefore, the P-doped WC-10Co alloys exhibited higher hardness than the undoped ones. But at the same time, P doping could lead to sacrifice of fracture toughness ofWC-10Co cemented carbides. 展开更多
关键词 microwave sintering cemented carbides ultrafine hardmetals PHOSPHORUS grain growth inhibitor
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Coercive Force of γ-Phase in WC-Co Cemented Carbides 被引量:1
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作者 刘寿荣 孙景 《Rare Metals》 SCIE EI CAS CSCD 1994年第4期299-301,共3页
The influence of γ-phase composition in WC-Co cemented carbides on its specific coercive force H_(sc) hasbeen studied by analysing the imitative alloys of γ-phase. The results show that the H_(sc) of γ-phase is low... The influence of γ-phase composition in WC-Co cemented carbides on its specific coercive force H_(sc) hasbeen studied by analysing the imitative alloys of γ-phase. The results show that the H_(sc) of γ-phase is lower thanthat of pure cobalt, because the solute W can raise γ-phase H_(sc) but the carbon exhibits more intense negativeeffect on H_(sc). The effect is enhanced with raising the C solubilities in γ-phase. 展开更多
关键词 WC-Co cemented carbides γ-phase Specific coercive force
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Comparison between the electrical resistance and the shear strength of brazed cemented carbides 被引量:1
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作者 W. Tillmann N. Sievers +4 位作者 D. Schnee R. Zielke L. Wojarski H. Ries F. Ozkan 《China Welding》 EI CAS 2015年第2期1-5,共5页
Brazing is a suitable technology to join different materials such as cemented carbides and steel. Even though this technology has been investigated for many years, insufficient joints can occur easily, as the brazing ... Brazing is a suitable technology to join different materials such as cemented carbides and steel. Even though this technology has been investigated for many years, insufficient joints can occur easily, as the brazing process is very sensitive concerning the handling parameters. Defects such as voids and cracks are hard to detect by commonly used visual inspection methods. Other nondestructive methods such as radiography or ultrasonic testing are usually not economical for the examination of these joints. Studies proved that the electrical resistance has the potential to serve as an effective alternative for the evaluation of brazed joints. In this study, the authors have compared the electrical resistance and the shear strength. For this, cemented carbides were brazed to steel by means of induction heating at an ambient atmosphere. A silver-based filler metal ( BrazeTec 4900 / Ag 449 ) and a flux ( BrazeTec spezial h / FH12) were selected to enable the brazing process. The brazing time and the temperature were varied in order to produce different joint qualities. After brazing, the resistance was measured on each joint with the 4-point probe method to facilitate a high accuracy. The results underline the possibility to use electrical resistance measurements as an effective tool for a quality control of brazed joints. 展开更多
关键词 BRAZING cemented carbides electrical resistance nondestructive testing the brazing process and can led to an unpredictable failure
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Manufacture of the Ultrafine Grain WC/Co Cemented Carbides by Combined Sintering Processing
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作者 Binghai Liu Yue Zhang +1 位作者 Shixi Ouyang Qikai Li(Institute of Technical Physics and Chemistry, East China University of Science and Technology , Shanghai 200237, China)(Material Science and Engineering School. University of Science and Technology Beijing, Beijing 100083, China)(State Key Laboratory for Synthesis and Processing of Advanced Materials. Wuhan University of Science and Technology, Wuhan 430070, China,) 《International Journal of Minerals,Metallurgy and Materials》 SCIE EI CAS CSCD 1999年第3期208-213,共6页
A new kind of sintering process, combined sintering process. i.e. vacuum sintering plus hot isolate pressure sintering (HIP), was introduced for producing ultrafine WC-10% Co (mass fraction. so as the follows) cemen... A new kind of sintering process, combined sintering process. i.e. vacuum sintering plus hot isolate pressure sintering (HIP), was introduced for producing ultrafine WC-10% Co (mass fraction. so as the follows) cemented carbides. The effects of some processing parameters on the microstructure and mechanical properties of the obtained cemented carbides were studied. The results show that the rapid shrinkage and the pronounced densification of tile cemented carbides took place during the vacuum sintering stage, which is intinaately correlated with the local liquid sintering occurred during this earl} sintering stage for the high surface activity of ultrafine WC-Co powder. The way of high pressure imposing. isothermal treatment cycle during ac.acuum sintering and HIP sintering stage directly influence the densitication of compacts and the mechanical properties of the produced WC-10%Co cemented carbides. 展开更多
关键词 ultrafine WC-Co cemented carbides vacuum sintering HIP sintering
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Effects of Implant Copper Layer on Diamond Film Deposition on Cemented Carbides
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作者 马志斌 汪建华 +1 位作者 邬钦崇 王传新 《Plasma Science and Technology》 SCIE EI CAS CSCD 2001年第1期647-651,共5页
The deposition of high-quality diamond films and their adhesion on cemented carbides are strongly influenced by the catalytic effect of cobalt under typical deposition conditions. Decreasing Co content on the surface... The deposition of high-quality diamond films and their adhesion on cemented carbides are strongly influenced by the catalytic effect of cobalt under typical deposition conditions. Decreasing Co content on the surface of the cemented carbide is often used for the diamond film deposition. But the leaching of Co from the WC-Co substrate leading to a mechanical weak surface often causes a poor adhesion. In this paper we adopted an implant copper layer prepared by vaporization to improve the mechanical properties of the Co-leached substrate. The diamond films were grown by microwave plasma chemical vapor deposition from CH4:H2 gas mixture. The cross section and the morphology of the diamond film were characterized by scanning electron microscopy (SEM). The non-diamond content in the film was analyzed by Raman spectroscopy. The effects of pretreatment on the concentrations of Co and Cu near the interfacial region were examined by energy dispersive spectrum (EDS) equipped with SEM. The adhesion of the diamond on the substrate was evaluated with a Rockwell-type hardness tester. The results indicate that the diamond films prepared with implant copper layer have a good adhesion to the cemented carbide substrate due to the recovery of the mechanical properties of the Co-depleted substrate after the copper implantation and the formation of less amorphous carbon between the substrate and the diamond film. 展开更多
关键词 Effects of Implant Copper Layer on Diamond Film Deposition on cemented carbides Co
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The effect of binder phase content on WC-AlCoCrFeNiTi_(0.2) high entropy cemented carbides microstructure and mechanical properties
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作者 Yuxin WEN Mingchen ZHANG Yong ZHANG 《Research and Application of Materials Science》 2022年第2期10-15,共6页
Thiswork aims to explore WC-G201 high entropy cemented carbides properties fabricated by spark plasma sintering with AlCoCrFeNiTi_(0.2)and WC as binder phase and hard phase respectively.AlCoCrFeNiTi_(0.2)powder and WC... Thiswork aims to explore WC-G201 high entropy cemented carbides properties fabricated by spark plasma sintering with AlCoCrFeNiTi_(0.2)and WC as binder phase and hard phase respectively.AlCoCrFeNiTi_(0.2)powder and WC powder were mixed at the mass ratio of 5:95,10:90 and 15:85 respectively,and then via SPS at 1300℃for 5min.The results show that the binder phase has good wettability to WC,and with the increase of binder phase content,the hardness of the alloy decreases gradually,fracture toughness increases first and then decreases,the maximum value is 7.88 MPa m1/2.It is estimated that the comprehensive mechanical property of cemented carbides is the best when the binder content is between 5wt%and 10wt%. 展开更多
关键词 High entropy alloys cemented carbides binder phase
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Effects of gradient structure on the microstructures and properties of coated cemented carbides 被引量:18
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作者 Li Chen Enxi Wu +1 位作者 Fei Yin Jia Li 《Journal of University of Science and Technology Beijing》 CSCD 2006年第4期363-367,共5页
The effects of gradient structure on the microstructure and properties of coated cemented carbides were researched with optical microscopy (OM), scanning electron microscopy (SEM), strength measurements, and cutti... The effects of gradient structure on the microstructure and properties of coated cemented carbides were researched with optical microscopy (OM), scanning electron microscopy (SEM), strength measurements, and cutting tests. It shows that vacuum sintering of WC-Ti(C, N)-TaC-Co cemented carbides results in the formation of a surface ductile zone. The ductile zone prevents crack propagation and leads to the increase of transverse rupture strength of the substrate. The impact resistance of coated gradient inserts was obviously improved on the basis of maintaining resistance to abrasion and the forming mechanism of the gradient structure was also analyzed. 展开更多
关键词 cemented carbide chemical vapor deposition (CVD) COATING gradient structure
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Computer-Aided Design of Some Advanced Steels and Cemented Carbides 被引量:2
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作者 LI Lin ZHANG Mei +2 位作者 HE Yan-lin De Cooman Bruno Wollants Patrick 《Journal of Iron and Steel Research(International)》 SCIE CAS CSCD 2005年第6期42-48,共7页
Thermodynamic and kinetic study on TRIP (transformation induced plasticity) steels, cemented carbides and mold steel for plastics were carried out in order to design modern advanced materials. With the sublattice mo... Thermodynamic and kinetic study on TRIP (transformation induced plasticity) steels, cemented carbides and mold steel for plastics were carried out in order to design modern advanced materials. With the sublattice model, equilibrium compositions of ferrite and austenite phases in TRIP steels, as well as volume fraction of austenite at inter-critical temperatures for different time were calculated. Concentration profiles of carbon, manganese, aluminum and silicon in the steels were also estimated in the lattice fixed frame of reference. The effect of Si and Mn on TRIP was discussed according to thermodynamic and kinetic analyses. In order to understand and produce the graded nanophase structure of cemented carbides, miscellaneous phases in the M-Co-C (M= Ti, Ta, Nh) systems and Co-V-C system were modeled. Solution parameters and thermodynamic: properties were listed in detail. The improvement of machining behavior of prehardened mould steel for plastics was obtained by computer-aided composition design. The results showed that the matrix composition of large-section prehardened mould steel for plastic markedly influences the precipitation of non-metallic inclusion and the composition control by the aid of Thermo-Calc software package minimizes the amount of detrimental oxide inclusion. In addition, the modification of calcium was optimized in composition design. 展开更多
关键词 computer-aided composition design TRIP steel cemented carbide prehardened mould steel concentration profile THERMODYNAMIC KINETIC equilibrium composition
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Research of Ultrafine Cemented Carbides for PCB Microdrills 被引量:2
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作者 张卫丰 李春霞 《Journal of Wuhan University of Technology(Materials Science)》 SCIE EI CAS 2021年第2期255-258,共4页
The nanocrystalline WC-10Co composite powders were produced with the processing method of spray thermal decomposition-continuous reduction&carburization.The grain growth inhibitors of 0.4wt%Cr_(3)C_(2) and 0.4wt%V... The nanocrystalline WC-10Co composite powders were produced with the processing method of spray thermal decomposition-continuous reduction&carburization.The grain growth inhibitors of 0.4wt%Cr_(3)C_(2) and 0.4wt%VC were added into the composite powders to obtain advanced ultrafine hardmetals with minimal porosity,defects and discontinuous.The rod samples were formed by extrusion.They were sintered in cacuum with SIP treatment.The sintered rods were made into PCB microdrill samples after polishing.Mechanical properties(such as density,hardness,transverse rupture strenth(TRS),magnetic saturation induction and magnetic coercivity)of the sintered ultrafine cemented carbides were measured.The microstructures of them were investigated by scanning electron microscopy(SEM)and transmission electron microscopy(TEM).The experimental results show that the transverse rupture strength of the samples sintered in vacuum with sinterhip(SIP)treatment is more excellent.The grain size could be controlled in a range of 200-400 nm with the help of grain growth inhibitors.And the superfine grained materials have superior strength(3900 MPa)and high hardness(HRA=93.3).These features are ideal for PCB microdrills. 展开更多
关键词 NANOCRYSTALLINE WC-10Co cemented carbide NANOCOMPOSITE PCB microdrills
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Effect of nitrogen introduction methods on the microstructure and properties of gradient cemented carbides 被引量:1
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作者 Tian-en Yang Ji Xiong Lan Sun Zhi-xing Guo Ding Cao 《International Journal of Minerals,Metallurgy and Materials》 SCIE EI CAS CSCD 2011年第6期709-716,共8页
关键词 gradient cemented carbide gradient methods nitrogen microstructure mechanical properties sintering
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Rare Earth Compounds in Cemented Carbides with Trace Rare Earth Additions
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作者 王瑞坤 尤力平 +5 位作者 王晓华 刘安生 贺从训 林晨光 石云华 汪有明 《Rare Metals》 SCIE EI CAS CSCD 1992年第2期111-114,共4页
The morphology,structure and distribution of the rare earth compounds in the YG8R.YT5R and YT14R cemented carbides with additions of trace light rare earths were studied with an analytical electron microscope. The par... The morphology,structure and distribution of the rare earth compounds in the YG8R.YT5R and YT14R cemented carbides with additions of trace light rare earths were studied with an analytical electron microscope. The particles of the rare earth compounds in these alloys are all spherical and distribute at interfaces between the Co-cement phase and WC hard phase or(TiW)C solid solution,and in the(TiW)C solid solution.In the YG8R and YTI4R alloys,the rare earth compound is RE_2O_3 with a bcc structure,while in the YT5R alloy. the rare earth compound is RE_2O_2S with a hcp structure. 展开更多
关键词 cemented carbide Rare earth compounds MICROSTRUCTURE
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Influence of Target Temperature on Cemented Carbides for Dual Ion Implantation
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作者 赵青 李宏福 童洪辉 《Plasma Science and Technology》 SCIE EI CAS CSCD 2006年第6期690-692,共3页
A Cemented Carbide material was implanted with dual nitrogen plus tantalum ions at temperatures of 100℃ and 400℃ and a dose of 8× 10^17 ions cm^-2. The thickness of the implanted layers increased by about an or... A Cemented Carbide material was implanted with dual nitrogen plus tantalum ions at temperatures of 100℃ and 400℃ and a dose of 8× 10^17 ions cm^-2. The thickness of the implanted layers increased by about an order of magnitude when the temperature was elevated from 100℃ to 400℃. Higher surface hardness was also obtained in the high temperature implantation. X-ray diffraction showed the presence of nitrides of tantalum and tungsten in the implanted surface. 展开更多
关键词 cemented carbide Ta+N ion implantation TEMPERATURE
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Failure Analysis of WC-3.5wt%Co Cemented Carbides in Mining Applications
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作者 王俊元 WANG Haipeng +4 位作者 WANG Huajun HE Ling LUO Wei ZHANG Yan 王洪福 《Journal of Wuhan University of Technology(Materials Science)》 SCIE EI CAS 2015年第6期1279-1285,共7页
In order to further understand the wear mechanisms of cemented carbide cutter head of conical pick, six wornout cutter heads were investigated detailedly through scanning electron microscopy(SEM) and energy dispersi... In order to further understand the wear mechanisms of cemented carbide cutter head of conical pick, six wornout cutter heads were investigated detailedly through scanning electron microscopy(SEM) and energy dispersive spectrometry(EDS). Abrasion wear and tipping were found to be the main wear mechanisms of the worn out cutter heads. Thermal stress and impact load played important roles in the wearing process of cutter heads. The intermixed mineral particles in the worn out areas aggravated the wear on the surface of cemented carbide. The spherical particles and vine-like structures were found to distribute in the wornout areas arbitrarily, and the compositions of which were detected using EDS. 展开更多
关键词 cemented carbide abrasion wear tipping thermal stress plastic deformation
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