期刊文献+
共找到1,782篇文章
< 1 2 90 >
每页显示 20 50 100
Effect of microstructure on the low temperature toughness of high strength pipeline steels 被引量:10
1
作者 Yan-ping Zeng Peng-yu Zhu Ke Tong 《International Journal of Minerals,Metallurgy and Materials》 SCIE EI CAS CSCD 2015年第3期254-261,共8页
Microstructure observations and drop-weight tear test were performed to study the microstructures and mechanical properties of two kinds of industrial X70 and two kinds of industrial X80 grade pipeline steels. The eff... Microstructure observations and drop-weight tear test were performed to study the microstructures and mechanical properties of two kinds of industrial X70 and two kinds of industrial X80 grade pipeline steels. The effective grain size and the fraction of high angle grain boundaries in the pipeline steels were investigated by electron backscatter diffraction analysis. It is found that the low temperature toughness of the pipeline steels depends not only on the effective grain size, but also on other microstructural factors such as martensite-austenite (MA) constituents and precipitates. The morphology and size of MA constituents significantly affect the mechanical properties of the pipeline steels. Nubby MA constituents with large size have significant negative effects on the toughness, while smaller granular MA constituents have less harmful effects. Similarly, larger Ti-rich nitrides with sharp corners have a strongly negative effect on the toughness, while fine, spherical Nb-rich carbides have a less deleterious effect. The low temperature toughness of the steels is independent of the fraction of high angle grain boundaries. 展开更多
关键词 high strength pipe steels microstrucmre low temperature TOUGHNESS influencing factors
下载PDF
ISOCHRONOUS STRESS-STRAIN CURVES OF LOW ALLOY STEEL CROSS-WELD-SPECIMEN AT HIGH TEMPERATURE 被引量:4
2
作者 C.W.Ma F.Z.Xuan +1 位作者 Z.D.Wang S.T.Tu 《Acta Metallurgica Sinica(English Letters)》 SCIE EI CAS CSCD 2004年第4期612-617,共6页
In this work, a parametric approach is presented and utilized to determine the creep properties of weldments; then the model of creep strain for cross weld specimen is given. On the basis of the experimental results, ... In this work, a parametric approach is presented and utilized to determine the creep properties of weldments; then the model of creep strain for cross weld specimen is given. On the basis of the experimental results, attempt has been made to establish equations of the isochronous stress-strain for weld joint that can predict the function of loading and service time in use of the creep data of base metal and weld metal. 展开更多
关键词 isochronous stress-strain curve creep deformation high temperature welded joint low alloy steel
下载PDF
High-temperature properties and microstructure of Mo microalloyed ultra-high-strength steel 被引量:3
3
作者 Qi-hang Han Yong-lin Kang +2 位作者 Xian-meng Zhao Lu-feng Gao Xue-song Qiu 《International Journal of Minerals,Metallurgy and Materials》 SCIE EI CAS CSCD 2011年第4期407-412,共6页
The high-temperature mechanical properties and microstructure of forging billets of C-Si-Mn-Cr and C-Si-Mn-Cr-Mo ultra-high-strength cold-rolled steels(tensile strength≥1000 MPa,elongation≥10%) were studied.Throug... The high-temperature mechanical properties and microstructure of forging billets of C-Si-Mn-Cr and C-Si-Mn-Cr-Mo ultra-high-strength cold-rolled steels(tensile strength≥1000 MPa,elongation≥10%) were studied.Through the comparison of reduction in area and hot deformation resistance at 600-1300°C,the Mo-containing steel was found to possess a higher strength and a better plasticity than the Mo-free one.The equilibrium phase diagram and atom fraction of Mo in different phases at different temperatures were calculated by Thermo-Calc software(TCW).The results analyzed by using transmission electron microscopy and TCW show that precipitates in the Mo-containing steel are primarily M23C6,which promote pearlite formation.The experimental data also show that a lower ductility point existing in the Mo-free steel at 850°C is eliminated in the Mo-containing one.This is mainly due to the segregation of Mo at grain boundaries investigated by electron probe microanalysis(EPMA),which improves the strength of grain boundaries. 展开更多
关键词 high strength steels high temperature properties MICROSTRUCTURE MOLYBDENUM THERMODYNAMICS
下载PDF
Corner strength enhancement of high strength cold-formed steel at normal room and elevated temperatures
4
作者 Ju CHEN Wei-liang JIN 《Journal of Zhejiang University-Science A(Applied Physics & Engineering)》 SCIE EI CAS CSCD 2008年第9期1251-1257,共7页
In this study, the suitability of current design methods for the 0.2% proof yield strength of the comer regions for high strength cold-formed steel at normal room temperature was investigated. The current standard pre... In this study, the suitability of current design methods for the 0.2% proof yield strength of the comer regions for high strength cold-formed steel at normal room temperature was investigated. The current standard predictions are generally accurate for outer comer specimen but conservative for inner comer specimen. Based on the experimental results, an analytical model to predict the comer strength of high strength cold-formed steel at normal room temperature was also proposed. The comparison indicated that the proposed model predicted well the comer strength of high strength cold-formed steel not only at normal room temperature but also at elevated temperatures. It is shown that the predictions obtained from the proposed model agree well with the test results. Generally the comer strength enhancement of high strength cold-formed steel decreases when the temperature increases. 展开更多
关键词 Cold-formed steel Comer Elevated temperatures high strength steel Yield strength
下载PDF
Low temperature impact toughness of laser hybrid welded joint of high strength low alloy steel
5
作者 倪加明 李铸国 +2 位作者 黄坚 倪慧峰 吴毅雄 《China Welding》 EI CAS 2011年第3期1-5,共5页
High strength low alloy steel with 16 mm thickness was welded by using high power laser hybrid welding. Microstrueture was characterized by using optical microscopy, scanning electron microscopy ( SEM ) , transmissi... High strength low alloy steel with 16 mm thickness was welded by using high power laser hybrid welding. Microstrueture was characterized by using optical microscopy, scanning electron microscopy ( SEM ) , transmission electron microscopy (TEM) and selected area electron diffraction (SAED). Low temperature impact toughness was estimated by using Charpy V-notch impact samples selected from the upper part and the lower part at the same heterogeneous joint. Results show that the low temperature impact absorbed energies of weld metal are (202,180,165 J) of upper samples and (178,145,160 J) of lower samples, respectively. All of them increase compared to base metal. The embrittlement of HAZ does not occur. Weld metal primarily consists of refined carbide free bainite and a little granular bainite since laser hybrid welding owns the character of low heat input. Retained austenite constituent film "locates among the lath structure of bainitie ferrite. Refined bainitic ferrite lath and retained austenite constituent film provide better low temperature impact toughness compared to base metal. 展开更多
关键词 laser hybrid welding high strength low alloy steel low temperature impact toughness carbide free bainite retained austenite constituent film
下载PDF
Effects of tungsten on the oxidation resistance and high-temperature strength of 18CrNbTi ferritic stainless steel
6
作者 LI Xin BI Hongyun CHEN Liqing 《Baosteel Technical Research》 CAS 2016年第4期41-45,共5页
18CrNbTi ferritic stainless steel is a low-cost material mainly used for the fabrication of manifolds, which usually work at temperatures below 950℃. With the development of engine technology, exhaust manifolds tend ... 18CrNbTi ferritic stainless steel is a low-cost material mainly used for the fabrication of manifolds, which usually work at temperatures below 950℃. With the development of engine technology, exhaust manifolds tend to work above 1 000 ℃ and this may be even higher in the future. For developing a new kind of steel to satisfy these requirements,the effects of tungsten (W)addition on the high-temperature strength and oxidation resistance of 18CrNbTi ferritic stainless steel are discussed in this study. The test results show that W enhances high-temperature strength at 1 000 ℃ and significantly improves oxidation resistance. However, W addition tends to degrade oxide layer adhesion,causing spalling during alternate hot and cold conditions. 展开更多
关键词 ferritic stainless steel high temperature strength oxidation resistance exhaust manifold
下载PDF
High temperature strength and ductility of the(C+N)strengthening Fe-Cr-Mn(W,V)steels
7
作者 BenfuHu QuanmaoYu +3 位作者 LinLu ChengchangJia HiroshiKinoshita HeishichiroTakahashi 《Journal of University of Science and Technology Beijing》 CSCD 2002年第4期292-297,共6页
Fe-Cr-Mn(W, V) austenite steels used as low radioactive structural materialsin fusion reactor have been investigated. The results show that the high temperature strength andthe creep fracture life of Fe-Cr-Mn(W, V) st... Fe-Cr-Mn(W, V) austenite steels used as low radioactive structural materialsin fusion reactor have been investigated. The results show that the high temperature strength andthe creep fracture life of Fe-Cr-Mn(W, V) steels can be effectively improved through (C+N)complex-strengthening, so can be the high temperature ductility. The strength and ductility of thesteels are superior to that of SUS316 steels and JPCAS below 673 K. The relationship betweenstrength, ductility and the formation temperature is related to the evolution of deformationmicrostructure. The fracture and microstructure observation above 673 K indicates that the main wayto further improve ductility at high temperature is the control of carbide coarsening at the grainboundaries. 展开更多
关键词 Fe-Cr-Mn steels high temperature strength deformation martensite stacking faults (SF)
下载PDF
Layer Structure Analysis of Low-Carbon Steel Containing Rare Earth by High-Temperature Carburizing of Liquid Cast-Iron
8
作者 谌岩 《Journal of Rare Earths》 SCIE EI CAS CSCD 2004年第S1期130-133,共4页
The layer structure of low-carbon steel containing RE by high-temperature (T>1200 ℃) carburizing of liquid cast-iron was studied and the diffusion activation energy of carbon was calculated by metallographic micr... The layer structure of low-carbon steel containing RE by high-temperature (T>1200 ℃) carburizing of liquid cast-iron was studied and the diffusion activation energy of carbon was calculated by metallographic microscpe, chemical analysis etc. The result shows that the technology of carburizing in liquid cast-iron can expedite caburization distinctly and changes the carburizing layer structure. The carburizing rate is 60~80 times of that of the traditional technology, and there is about 43% decrease in the activation energy compared with gas-carburization. In outer structure layer, cementite is formed simultaneously both on the crystal boundary reticularly and inside the crystal grains stripedly. In inner carburizing layer, there is undissolved blocky ferrite in reticular cementite. Besides, rare earth element can expedite carburization process. 展开更多
关键词 low-carbon steel high-temperature carburizing of liquid cast-iron layer structure rare earths
下载PDF
Study on Carburizing Kinetics of Low-carbon Steel at High-temperature and Short-term
9
作者 刘声 肖念新 张海龙 《Journal of Rare Earths》 SCIE EI CAS CSCD 2007年第S2期266-269,共4页
In this paper, the carburizing kinetics of low-carbon steel at high-temperature and short-term in liquid cast-iron were studied by metallographic microscope, chemical analysis and so on, and the microstructure of carb... In this paper, the carburizing kinetics of low-carbon steel at high-temperature and short-term in liquid cast-iron were studied by metallographic microscope, chemical analysis and so on, and the microstructure of carburized layer was also analyzed. The results show that the carburizing rate of low-carbon steel at high-temperature and short-term is so fast, and the microstructure of carburized layer possess higher carbon content, and cementite, pearlite and ferrite exist in carburized layer structure simultaneously. Besides, the kinetic equations of permeating layer forming have been presented, and the carburizing mechanism was preliminary discussed also. 展开更多
关键词 low-carbon steel high-temperature carburizing of liquid cast-iron KINETICS carburizing microstructure rare earths
下载PDF
Microstructure and mechanical properties of high-strength low alloy steel by wire and arc additive manufacturing 被引量:8
10
作者 Yi-li Dai Sheng-fu Yu +1 位作者 An-guo Huang Yu-sheng Shi 《International Journal of Minerals,Metallurgy and Materials》 SCIE EI CAS CSCD 2020年第7期933-942,共10页
A high-building multi-directional pipe joint(HBMDPJ)was fabricated by wire and arc additive manufacturing using high-strength low-alloy(HSLA)steel.The microstructure characteristics and transformation were observed an... A high-building multi-directional pipe joint(HBMDPJ)was fabricated by wire and arc additive manufacturing using high-strength low-alloy(HSLA)steel.The microstructure characteristics and transformation were observed and analyzed.The results show that the forming part includes four regions.The solidification zone solidifies as typical columnar crystals from a molten pool.The complete austenitizing zone forms from the solidification zone heated to a temperature greater than 1100℃,and the typical columnar crystals in this zone are difficult to observe.The partial austenitizing zone forms from the completely austenite zone heated between Ac1(austenite transition temperature)and1100℃,which is mainly equiaxed grains.After several thermal cycles,the partial austenitizing zone transforms to the tempering zone,which consistes of fully equiaxed grains.From the solidification zone to the tempering zone,the average grain size decreases from 75 to20μm.The mechanical properties of HBMDPJ satisfies the requirement for the intended application. 展开更多
关键词 wire and arc additive manufacturing high strength low alloy steel microstructure INCLUSIONS fine grain ferrite mechanical properties
下载PDF
Effect of Fast Cooling Rate on the Microstructure and Mechanical Properties of Low-Carbon High-Strength Steel Annealed in the Intercritical Region 被引量:3
11
作者 李壮 田勇 +2 位作者 KANG Shaopu ZHENG Zhen LIU Ming 《Journal of Wuhan University of Technology(Materials Science)》 SCIE EI CAS 2014年第3期572-577,共6页
The effect of fast cooling rate on the microstructure and mechanical properties of low-carbon high-strength steel annealed in the intercritical region was investigated using a Gleeble 1500 thermomechanical simulator a... The effect of fast cooling rate on the microstructure and mechanical properties of low-carbon high-strength steel annealed in the intercritical region was investigated using a Gleeble 1500 thermomechanical simulator and a continuous annealing thermomeehanical simulator. The results showed that the microstructure consisted of ferrite and bainite as the main phases with a small amount of retained austenite and martensite islands at cooling rate of 5 and 50 ℃/s, respectively. Fast cooling after continuous annealing affected all constituents of the microstructure. The mechanical properties were improved considerably. Ultimate tensile strength (U-TS) increased and total elongation (TEL) decreased with increasing cooling rate in all specimens. The specimen 1 at a cooling rate of 5 ℃/s exhibited the maximum TEL and UTSxTEL (20% and 27 200 MPa%, respectively) because of the competition between weakening by presence of the retained austenite plus the carbon indigence by carbide precipitation, and strengthening by martensitic islands and precipitation. The maximum UTS and YS (1 450 and 951 MPa, respectively) were obtained for specimen 2 at a cooling rate of 50 ℃/s. This is attributed to the effect of dispersion strengthening of finer martensite islands and the effect of precipitation strengthening of carbide precipitates. 展开更多
关键词 cooling rate low-carbon high-strength steel intercritical annealing MICROSTRUCTURE mechanical properties
下载PDF
Effect of microstructure variation on the corrosion behavior of high-strength low-alloy steel in 3.5wt% NaCl solution 被引量:3
12
作者 Yu-bing Guo Chong Li +4 位作者 Yong-chang Liu Li-ming Yu Zong-qing Ma Chen-xi Liu Hui-jun Li 《International Journal of Minerals,Metallurgy and Materials》 SCIE EI CAS CSCD 2015年第6期604-612,共9页
The effect of microstructure variation on the corrosion behavior of high-strength low-alloy(HSLA) steel was investigated. The protective property of the corrosion product layer was also explored. Experimental result... The effect of microstructure variation on the corrosion behavior of high-strength low-alloy(HSLA) steel was investigated. The protective property of the corrosion product layer was also explored. Experimental results reveal that the type of microstructure has significant effect on the corrosion resistance of HSLA steel. The measurement results of weight loss, potentiodynamic polarization curves, and electrochemical impedance spectroscopy indicate that the steel with acicular ferrite microstructure exhibits the lowest corrosion rate. Martensite exhibits a reduced corrosion resistance compared with polygonal ferrite. It is found that the surface of the acicular ferrite specimen uniformly covered by corrosion products is seemingly denser and more compact than those of the other two microstructures, and can provide some amount of protection to the steel; thus, the charge transfer resistance and modulus values of the acicular ferrite specimen are the largest. However, corrosion products on martensite and polygonal ferrite are generally loose, porous, and defective, and can provide minor protectiveness; thus, the charge transfer resistance values for polygonal ferrite and martensite are lower. 展开更多
关键词 high-strength low-alloy steel microstructure corrosion sodium chloride solutions
下载PDF
Effect of Rare Earth Elements on Low Frequency Fatigue of Hot Rolled Steel 60CrMnMo at High Temperature
13
作者 杨庆祥 吴浩泉 +2 位作者 郭景海 丁柏群 吴朝晖 《Journal of Rare Earths》 SCIE EI CAS CSCD 1994年第1期23-27,共5页
The effect of rare earth(RE) on low frequency high temperature fatigue strength of hot rolled steel 60CrMnMo was investigated. The results show that by adding a certain amount of RE in steel 60CrMnMo, its serviceable ... The effect of rare earth(RE) on low frequency high temperature fatigue strength of hot rolled steel 60CrMnMo was investigated. The results show that by adding a certain amount of RE in steel 60CrMnMo, its serviceable life during low frequency fatigue test at high temperature can be improved.The number of cycles for fracture was increased by 18.5%~28.8%. The number of large inclusion particleswas reduced and the composition of inclusions and their shape were changed as well. The strip distances on fatigue fracture surface were decreased. It is concluded that the optimum amount of RE addtion is about 0.05 wt%~0. 10 wt%. 展开更多
关键词 Rare earth steel 60CrMnMo low frequency fatigue high temperature
下载PDF
Study on low temperature performance of Gussasphalt on steel decks with hard bitumen 被引量:6
14
作者 杨军 《Journal of Southeast University(English Edition)》 EI CAS 2003年第2期160-164,共5页
Using a Hamburg wheel-track test device, the resistance to rutting of Gussasphalt is tested and compared. Gussasphalt with hard bitumen has good resistance to rutting. The related resistance abilities to cracking at ... Using a Hamburg wheel-track test device, the resistance to rutting of Gussasphalt is tested and compared. Gussasphalt with hard bitumen has good resistance to rutting. The related resistance abilities to cracking at low temperature of Gussasphalt are tested and compared through flexural experiments and the composite structure fatigue test with temperature dropping. Gussasphalt with high performance polymer modified bitumen has a longer fatigue life and a lower breaking temperature; they can be used in the future surfaces for steel bridge decks in Germany. 展开更多
关键词 GUSSASPHALT surfaces for steel decks hard bitumen high performance polymer modified bitumen low temperature performance
下载PDF
Effects of low temperature on properties of structural steels 被引量:29
15
作者 YanminWu YuanqingWang YongjiuShi JianjingJiang 《Journal of University of Science and Technology Beijing》 CSCD 2004年第5期442-448,共7页
The experiments were carried out to measure the mechanical properties ofthree grades of structural steels (Q235A, 16Mn and Q390E steel) at low temperature. It was shownthat the strength of the steels increases while t... The experiments were carried out to measure the mechanical properties ofthree grades of structural steels (Q235A, 16Mn and Q390E steel) at low temperature. It was shownthat the strength of the steels increases while the plasticity and toughness decrease as temperaturedrops. In the transitional area the toughness drops rapidly with temperature. Among the threestructural steels, Q390E steel has the best toughness and the lowest sensitivity. 展开更多
关键词 low temperature structural steel mechanical property strength TOUGHNESS PLASTICITY
下载PDF
Numerical simulation of residual stress and deformation for submerged arc welding of Q690D high strength low alloy steel thick plate 被引量:7
16
作者 Zhu Zikun Han Yang +2 位作者 Zhang Zhou Zhang Yi Zhou Longzao 《China Welding》 CAS 2021年第3期49-58,共10页
The finite element simulation software SYSWELD is used to numerically simulate the temperature field,residual stress field,and welding deformation of Q690D thick plate multi-layer and multi-pass welding under differen... The finite element simulation software SYSWELD is used to numerically simulate the temperature field,residual stress field,and welding deformation of Q690D thick plate multi-layer and multi-pass welding under different welding heat input and groove angles.The simulation results show that as the welding heat input increases,the peak temperature during the welding process is higher,and the residual stress increases,they are all between 330–340 MPa,and the residual stress is concentrated in the area near the weld.The hole-drilling method is used to measure the actual welding residual stress,and the measured data is in good agreement with the simulated value.The type of post-welding deformation is angular deformation,and as the welding heat input increases,the maximum deformation also increases.It shows smaller residual stress and deformation when the groove angle is 40°under the same heat input.In engineering applications,under the premise of guaranteeing welding quality,smaller heat input and 40°groove angle should be used. 展开更多
关键词 numerical simulation multi-layer and multi-pass welding Q690D high strength low alloy steel welding residual stress and deformation
下载PDF
Effect of welding processes on mechanical and microstructural characteristics of high strength low alloy naval grade steel joints 被引量:7
17
作者 S.RAGU NATHAN V.BALASUBRAMANIAN +1 位作者 S.MALARVIZHI A.G.RAO 《Defence Technology(防务技术)》 SCIE EI CAS CSCD 2015年第3期308-317,共10页
Naval grade high strength low alloy(HSLA) steels can be easily welded by all types of fusion welding processes. However, fusion welding of these steels leads to the problems such as cold cracking, residual stress, dis... Naval grade high strength low alloy(HSLA) steels can be easily welded by all types of fusion welding processes. However, fusion welding of these steels leads to the problems such as cold cracking, residual stress, distortion and fatigue damage. These problems can be eliminated by solid state welding process such as friction stir welding(FSW). In this investigation, a comparative evaluation of mechanical(tensile, impact,hardness) properties and microstructural features of shielded metal arc(SMA), gas metal arc(GMA) and friction stir welded(FSW) naval grade HSLA steel joints was carried out. It was found that the use of FSW process eliminated the problems related to fusion welding processes and also resulted in the superior mechanical properties compared to GMA and SMA welded joints. 展开更多
关键词 低合金高强度钢 焊接工艺 钢接头 组织结构 力学性能 搅拌摩擦焊 机械特性 焊接方法
下载PDF
Research and development of hot-rolled ultra-high strength steel at Baosteel 被引量:1
18
作者 ZHENG Lei ZHANG Aiwen TANG Wenjun 《Baosteel Technical Research》 CAS 2010年第2期48-53,共6页
The effects of the composition and cooling process on the microstructures and properties of hot-rolled ultra-high strength low alloy (HSLA) steel, complex phase steel and martensite steel were studied in the laborat... The effects of the composition and cooling process on the microstructures and properties of hot-rolled ultra-high strength low alloy (HSLA) steel, complex phase steel and martensite steel were studied in the laboratory. And S700MC and MP1200 ultra-high strength steels were trial produced at the 1 880 mm hot-rolling line of Baosteel. Compared with conventional hot-rolled high strength products,the idea that water is alloy was applied in the newly developed hot-rolled ultra-high strength steel. By the use of the economical composition design and controlled cooling after hot-rolling effectively,ultra-high strength steel of different steel grades can be obtained. 展开更多
关键词 ultra-high strength low alloy steel complex phase steel martensite steel
下载PDF
Low cycle fatigue behavior of high strength gun steels
19
作者 Maoqiu Wang Han Dong +1 位作者 Qi Wang Changgang Fan Division of Structural Materials, Central Iron & Steel Research Institute, Beijing 100081, China 《Journal of University of Science and Technology Beijing》 CSCD 2004年第3期268-272,共5页
The low cycle fatigue (LCF) behavior of two high strength steels, withnominal chemical compositions (mass fraction, %) of 0.40C-1.5Cr-3Ni-0.4Mo-0.2V (PCrNi3MoV) and0.25C-3Cr-3Mo-0.8Ni-0.1Nb (25Cr3Mo3NiNb), was investi... The low cycle fatigue (LCF) behavior of two high strength steels, withnominal chemical compositions (mass fraction, %) of 0.40C-1.5Cr-3Ni-0.4Mo-0.2V (PCrNi3MoV) and0.25C-3Cr-3Mo-0.8Ni-0.1Nb (25Cr3Mo3NiNb), was investigated by using the smooth bar specimenssubjected to strained-controlled push-pull loading. It is found that both steels show cyclicsoftening, but 25Cr3Mo3NiNb steel has a lower tendency to cyclic softening. 25Cr3Mo3NiNb steel hashigher fatigue ductility, and its transition fatigue life is almost three times that of PCrNi3MoV.25Cr3Mo3NiNb steel also shows higher LCF life either at a given total strain amplitude above 0.5% orat any given plastic strain amplitude, despite its lower monotonic tensile strength than that ofPCrNi3MoV. It also means that 25Cr3Mo3NiNb steel can endure higher total strain amplitude andplastic strain amplitude at a given number of reversals to failure within 10~4. 25Cr3Mo3NiNb steelis expected to be a good gun steel with high LCF properties because only several thousand firingsare required for gun barrel in most cases. 展开更多
关键词 high strength steel low cycle fatigue mechanical property
下载PDF
Thermal Activation Analyses of Dynamic FractureToughness of High Strength Low Alloy Steels
20
作者 Cunjian LI and Shaohua LI Welding Research Department, Central Iron & Steel Research Institute, Beijing 100081, China Yuqing DENG State Administration of Metallurgical Industry, Beijing 100711, China 《Journal of Materials Science & Technology》 SCIE EI CAS CSCD 2001年第2期215-218,共4页
A formula is derived for determining the influence of temperature and loading rate on dynamic fracture toughness of a high strength low alloy steel (HQ785C) from thermal activation analysis of the experimental results... A formula is derived for determining the influence of temperature and loading rate on dynamic fracture toughness of a high strength low alloy steel (HQ785C) from thermal activation analysis of the experimental results of three-point bend specimens as well as introducing an Arrhenius formula. It is shown that the results obtained by the given formula are in good agreement with the experimental ones in the thermal activation region. The present method is also valuable to describe the relationship between dynamic fracture toughness and temperature and loading rate of other high strength low alloy steels. 展开更多
关键词 TEST GB Thermal Activation Analyses of Dynamic FractureToughness of high strength low Alloy steels
下载PDF
上一页 1 2 90 下一页 到第
使用帮助 返回顶部