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Calculation of phase diagram of Ti-Ni-O system and application to deoxidation of TiNi alloy 被引量:1
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作者 邱爱涛 刘岚洁 +2 位作者 庞威 鲁雄刚 李重河 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2011年第8期1808-1816,共9页
The Ti-Ni-O ternary system was assessed by means of Calphad method using ternary experimental data in previous study.Isothermal sections at 1 173 and 1 273 K were calculated.The result shows that the present calculate... The Ti-Ni-O ternary system was assessed by means of Calphad method using ternary experimental data in previous study.Isothermal sections at 1 173 and 1 273 K were calculated.The result shows that the present calculated results are in good agreement with most of the experimental results.The consistent model parameter set determined in this work may provide theoretical guidance for the deoxidation of TiNi alloy. 展开更多
关键词 tini alloy CALPHAD Ti-Ni-O system electrochemical deoxidation
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IN SITU TEM STUDY ON THE R-PHASE TRANSFORMATION IN TiNi ALLOY 被引量:10
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作者 CHEN Qing WU Xingfang and C. J. Humphreys(Department of Materials Physics, University of Science and Technology Beijing, Beijing 100083, China)(Department of Materials Science and Metallurgy, University of Cambridge, Cambridge CBZ 3QZ, U. K.) 《Acta Metallurgica Sinica(English Letters)》 SCIE EI CAS CSCD 1996年第3期157-163,共7页
The R-phase transformation process in selected TiNi alloys has been studied in great detail by using in situ TEM technique. The R-phase transformation was found to be a reversible thermoelastic displacive transformati... The R-phase transformation process in selected TiNi alloys has been studied in great detail by using in situ TEM technique. The R-phase transformation was found to be a reversible thermoelastic displacive transformation with a nucleation and growth process. The R-phase nucleates at the precipitate/matrix interface in aged specimens and grows by moving the coherent R/matrix interfaces. The stress field of Ti3Ni4 precipitates plays a much more important role in the formation of the R-phase than dislocations in aged TiNi alloy. The microstructure of the R-phase has also been studied. 展开更多
关键词 R-phase transformation tini alloy in situ TEM
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Calcium phosphate deposition on surface of porous and dense TiNi alloys in simulated body fluid 被引量:1
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作者 刘珏 刘超 +2 位作者 李婧 刘敏 阮建明 《Journal of Central South University》 SCIE EI CAS CSCD 2016年第1期1-9,共9页
Porous and dense TiNi alloys were successfully fabricated by powder metallurgy(P/M) method, and to further improve their surface biocompatibility, surface modification techniques including grind using silicon-carbide(... Porous and dense TiNi alloys were successfully fabricated by powder metallurgy(P/M) method, and to further improve their surface biocompatibility, surface modification techniques including grind using silicon-carbide(SiC) paper, acid etching and alkali treatment were employed to produce either irregularly rough surface or micro-porous surface roughness. X-ray diffractometry(XRD), scanning electron microscopy(SEM) and energy dispersive X-ray spectroscopy(EDX) attached to SEM were used to characterize surface structure and the Ca-P coatings. Effects of the above surface treatments on the surface morphology, apatite forming ability were systematically investigated. Results indicate that all the above surface treatments increase the apatite forming ability of TiNi alloys in varying degrees when soaked in simulated body fluid(SBF). More apatite coatings formed on TiNi samples sintered at 1050℃ and 1100℃ due to their high porosity and pure TiNi phase that is beneficial to heterogeneous nucleation. Furthermore, more uniform apatite was fabricated on the sample sintered from the mixture of Ni and Ti powders. 展开更多
关键词 calcium phosphate tini alloy surface treatment MICROSTRUCTURE simulated body fluid (SBF)
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Effect of Thermal Cycling under Load on Martensite Transformation and Two-way Shape Memory Effect in a TiNi Alloy 被引量:1
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作者 Liming WANG, Yufeng ZHENG, Wei CAI, Xianglong MENG and Liancheng ZHAO School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China 《Journal of Materials Science & Technology》 SCIE EI CAS CSCD 2001年第2期263-266,共4页
The effect of thermal cycling under loading on martensitic transformation and two-way shape memory effect was investigated for Ti-49.8 at, pet Ni alloy. It is shown that M(s), and M(f) temperature increase with increa... The effect of thermal cycling under loading on martensitic transformation and two-way shape memory effect was investigated for Ti-49.8 at, pet Ni alloy. It is shown that M(s), and M(f) temperature increase with increasing the number of cycles, while A(s) and A(f) temperature decrease during thermal cycling. The total strain at and permanent strain epsilon (p) increase with increasing applied stress and number of cycles. The two-way shape memory effect can be improved by proper thermal cycling training under loading, while excessively high applied stress results in the deterioration of TWSME. The reason for the changes in martensitic transformation characteristics and two-way shape memory effect during thermal cycling under loading is discussed based on the analysis of microstructure by TEM observations. 展开更多
关键词 tini Effect of Thermal Cycling under Load on Martensite Transformation and Two-way Shape Memory Effect in a tini alloy
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Influence of Pseudoelasticity on Mechanical Behavior of TiNi Alloy under Dynamic Impact Loading
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作者 Xu Renbo Cui Lishan Zheng Yanjun Chen Hongling 《Petroleum Science》 SCIE CAS CSCD 2007年第1期86-89,共4页
The mechanical behavior of TiNi alloy and Cr12MoV alloy under dynamic impact loading was investigated with a self-made impact testing system. The real-time contact force was measured with a piezoelectric force sensor ... The mechanical behavior of TiNi alloy and Cr12MoV alloy under dynamic impact loading was investigated with a self-made impact testing system. The real-time contact force was measured with a piezoelectric force sensor and digital signal processing system during impact. Equations for predicting instantaneous velocity anti displacement were presented. The results showed that the TiNi alloy exhibited a plateau of maximum contact force with increasing impact height. At the plateau stage, TiNi alloy in the parent phase can absorb impact energy and keep the maximum contact force nearly identical due to its pseudoelasticity. 展开更多
关键词 tini alloy mechanical behavior contact force impact energy PSEUDOELASTICITY
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Surface Composition and Corrosion Property of TiNi Alloys Coated with Tantalum Films
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作者 Yan CHENG, Wei CAI and Liancheng ZHAOSchool of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China 《Journal of Materials Science & Technology》 SCIE EI CAS CSCD 2004年第4期474-476,共3页
Multi-arc ion plating method was employed to coat TiNi alloys with Ta in order to improve radiopacity and corrosion resistance property. The surface composition, corrosion resistance property and Ni ions release amoun... Multi-arc ion plating method was employed to coat TiNi alloys with Ta in order to improve radiopacity and corrosion resistance property. The surface composition, corrosion resistance property and Ni ions release amount of TiNi alloys coated with Ta films compared with TiNi alloys, are investigated by means of X-ray photoelectron spectrometry (XPS), electrochemical measurements and atomic absorption spectrophotometry (AAS), respectively. The results show that the coated surface composition is composed of Ta and 0 and the corrosion resistance is improved, whereas the Ni ions release amount of the coated sample is lower than that of the uncoated samples in the whole immersion period, indicating that Ta coating can improve the biocompatibility of TiNi alloys. 展开更多
关键词 tini alloy TANTALUM COATING CORROSION
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Deposition of DLC Coating on Biomedical TiNi Alloys by Plasma Based Ion Implantation to Improve Surface Properties
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作者 郑玉峰 《Journal of Wuhan University of Technology(Materials Science)》 SCIE EI CAS 2005年第B12期312-314,共3页
Diamond-like carbon (DLC) films were successfully deposited on Ti- 50.8 at% Ni using plasma based ion implantation (PBII) technique. The influence of the pulsed negative bias voltage applied to the substrate from... Diamond-like carbon (DLC) films were successfully deposited on Ti- 50.8 at% Ni using plasma based ion implantation (PBII) technique. The influence of the pulsed negative bias voltage applied to the substrate from 12 kV to 40 kV on the microstracture, nano-indentation hardness and Young' s modulus, the surface characteristics and corrosion resistant property as well as hemocompatibility were investigated. The experimental resalts showed that C 1 s peak depended heavily on the bias voltage. With the increase of bias voltage, the ratio of sp2 / sp3 first decreased, reaching a minimum value at 20 kV, and then increased. The DLC coating deposited at 20 kV showed the highest hardness and elastic modulus values as a result of lower sp2/sp3 ratio. The RMS values first decreased from 7.202nm(12 kV) to 5.279 nm(20 kV), and then increased to 11.449 nm(30 kV) and 7.060 nm( 40 kV). The uncoated TiNi alloy showed severe pitting corrosion, due to the presence of Cl-ions in the solution. On the contrary, the DLC coated sample showed very little pitting corrosion and behaved better corrosion resistant property especially for the specimens deposited at 20 kV bias voltages. The platelet adhesion test show that the hemocompatibility of DLC coated TiNi alloy is much better than that of bare TiNi alloy, and the hemocompatibility performance of DLC coated TiNi alloy deposited at 20 kV is superior to that of other coated specimens. 展开更多
关键词 diamond-like carbon biomedical tini alloy plasma based ion implantation surface property
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A Preparing Process of Quick-moving Leaf for TiNi Alloy
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作者 Zichang SHAO Jingcheng WANG and Wei ZHANG (No. 1 Materials Research Dept., Shanghai Iron and Steel Research Institute, Shanghai, 200940, China)(To whom correspondence should be addressed) 《Journal of Materials Science & Technology》 SCIE EI CAS CSCD 1994年第5期389-390,共2页
This paper reports a preparing process of quick moving leaf for TiNi shape memory alloy. Using the process. a series of quick moving leaves having different points of temperature. from 58 to 100℃. at which they jump ... This paper reports a preparing process of quick moving leaf for TiNi shape memory alloy. Using the process. a series of quick moving leaves having different points of temperature. from 58 to 100℃. at which they jump up have been made. The quick moving leaves will be fully qualified as the electric switches that open and close themselves at proper temperatures. 展开更多
关键词 tini A Preparing Process of Quick-moving Leaf for tini alloy
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Evolution of TiNi precipitates in TiNi alloy during equal channel angular pressing 被引量:2
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作者 Jia-rui REN Alexander V.SHUITCEV +3 位作者 Bin SUN Feng CHEN Li LI Yun-xiang TONG 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2021年第4期980-987,共8页
The evolution of Ti3Ni4 precipitates in Ti49.2Ni50.8 alloy during equal channel angular pressing(ECAP) and intermediate annealing was investigated by transmission electron microscopy. The solution-treated Ti49.2Ni50.8... The evolution of Ti3Ni4 precipitates in Ti49.2Ni50.8 alloy during equal channel angular pressing(ECAP) and intermediate annealing was investigated by transmission electron microscopy. The solution-treated Ti49.2Ni50.8 alloy was aged at 450 ℃ for 10 to 60 min to obtain Ti3Ni4 precipitates ranging from 37 to 75 nm. After ECAP at 450 ℃ for one pass, Ti3Ni4 precipitates introduced by aging for 10 and 30 min totally dissolve into the matrix;however, those produced by aging for 60 min become smaller. The critical size of Ti3Ni4 precipitates to totally dissolve into matrix is determined to be in the range of 37-68 nm. The dislocation density of ECAP-processed samples depends on the initial size of Ti3Ni4 precipitates after aging. With increasing the duration of initial aging from 10 to 60 min, the dislocation density firstly increases and then decreases. 展开更多
关键词 tini shape memory alloy equal channel angular pressing DISLOCATION PRECIPITATION Ti3Ni4 phase
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Deformation temperature and postdeformation annealing effects on severely deformed TiNi alloy by equal channel angular extrusion 被引量:1
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作者 Zhenhua Li Xianhua Cheng 《Journal of University of Science and Technology Beijing》 CSCD 2007年第6期533-537,共5页
Micron TiNi alloy blocks were fabricated at high temperature by equal channel angular extrusion (ECAE) using hotforged Ti-50.3at%Ni alloy as the raw material and the effects of deformation temperature and postdeform... Micron TiNi alloy blocks were fabricated at high temperature by equal channel angular extrusion (ECAE) using hotforged Ti-50.3at%Ni alloy as the raw material and the effects of deformation temperature and postdeformation annealing on the severely deformed TiNi alloy by ECAE were investigated. The results show that the TiNi alloy processed by ECAE undergoes severe plastic deformation, and lowering the deformation temperature and increasing the number of extrusions contribute to grain refinement. When the annealing temperature is below 873 K, static recovery is the main restoration process; when the temperature rises to 973 K, static recrystallization occurs. It is found that fine particles are precipitated when the TiNi alloy processed by ECAE is annealed at 773 K. 展开更多
关键词 tini shape memory alloy equal channel angular extrusion (ECAE) static recrystallization ultrafine-grained (UFG) structure
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Mechanical Behaviors of TiNi Alloy under Dynamic Impact Loading Conditions
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作者 Xu Renbo Cui Lishan +1 位作者 Zheng Yanjun Chen Hongling 《Petroleum Science》 SCIE CAS CSCD 2005年第3期40-43,共4页
The mechanical behaviors of Ti-50.7%Ni shape memory alloy under a dynamic impact loading condition were investigated by a home-built impact testing system. Both the contact force and the contact time during the impact... The mechanical behaviors of Ti-50.7%Ni shape memory alloy under a dynamic impact loading condition were investigated by a home-built impact testing system. Both the contact force and the contact time during the impact process were measured with a piezoelectric force sensor and a digital signal processing system in real time. The predicted instantaneous velocity and the displacement formulae are presented. Results show that the maximum contact force increased, while the contact time decreased with the increase of the temperature when the TiNi alloy was in a martensitic state. When the compressive stress during the impact process was higher than the critical stress of the stress-induced martensitic transformation, the TiNi alloy specimen in the parent phase left no permanent deformation but could dissipate the impact energy. 展开更多
关键词 tini shape memory alloy contact force contact time impact energy
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Actuation Mechanism of Two-step Reverse Transformation Behavior in TiNi Alloys Deformed at Parent Phase
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作者 怀利敏 《Journal of Wuhan University of Technology(Materials Science)》 SCIE EI CAS 2004年第B10期83-85,共3页
The actuation mechanism of TiNi shape memory alloy wires, which were deformed at parent phase followed by a cooling process under constant strain constraint, was investigated. The experimental results show that the tw... The actuation mechanism of TiNi shape memory alloy wires, which were deformed at parent phase followed by a cooling process under constant strain constraint, was investigated. The experimental results show that the two-step reverse martensitic transformation behavior occurs during the heating process, and the temperature range of reverse transformation was obviously widened with the increasing of prestrain. The recovery strain vs temperature curves exhibits an actuation characteristic of linear output recovery strain in a wide temperature range. 展开更多
关键词 tini shape memory alloy actuation mechanism two-step reverse martensitic transformation
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Effects of second phases on mechanical properties and martensitic transformations of ECAPed TiNi and Ti-Mo based shape memory alloys 被引量:8
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作者 宋杰 王立明 +5 位作者 张效宁 孙小刚 江鸿 范志国 谢超英 吴明雄 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2012年第8期1839-1848,共10页
TiNi and Ti-based shape memory alloys were processed by equal channel angular pressing (ECAP) at 673-773 K along Bc route to obtain ultrafine grains for increasing the strength of parent phase and improving the func... TiNi and Ti-based shape memory alloys were processed by equal channel angular pressing (ECAP) at 673-773 K along Bc route to obtain ultrafine grains for increasing the strength of parent phase and improving the functional properties. The effects of both thermodynamically stable and metastable second phases on the mechanical properties and martensitic transformations of these alloys were investigated. It is found that thermodynamically stable Ti2Ni phase has no effect on martensitic transformation and superelasticity of Ti-rich TiNi alloy, thermodynamically stable α phase is harmful for ductility of Ti-Mo-Nb-V-Al alloy, but metastable Ti3Ni4 phase is effective for R phase transformation, martensitic transformation and superelasticity of Ni-rich TiNi alloy. The mechanisms of the second phases on the martensitic transformations and mechanical properties were discussed. 展开更多
关键词 tini alloy Ti-Mo based shape memory alloy equal channel angular pressing (ECAP) second phase mechanical property
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Microstructure and properties of laser micro welded joint of TiNi shape memory alloy 被引量:7
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作者 龚伟怀 陈玉华 柯黎明 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2011年第9期2044-2048,共5页
Butt welding of 0.2 mm-thick TiNi shape memory alloy sheet (SMA) was carried out using impulse laser, and tensile strength, fracture morphology, microstructure and phase change behaviour of welded joint were studied... Butt welding of 0.2 mm-thick TiNi shape memory alloy sheet (SMA) was carried out using impulse laser, and tensile strength, fracture morphology, microstructure and phase change behaviour of welded joint were studied. The results show that using impulse laser can realize good butt welding of TiNi SMA sheet, tensile strength of welded joint is 683 MPa, which achieves 97% of that of cold rolled base metal, and the fracture mode of welded joint is ductile type as well as base metal. The welded joint can be divided into four zones according to grain size and microstructure. The microstructures of welded seam center zone are fine equiaxed crystals and the microstructures of both lower surface and upper surface edge zones are columnar crystals. When welded joint is vacuum annealed after welding, the phase transformation process is basically similar to the annealed base metal. 展开更多
关键词 tini shape memory alloy laser micro welding microstructure properties phase transformation behavior
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Transformation of the TiNi Alloy Microstructure and the Mechanical Properties Caused by Repeated B2-B190' Martensitic Transformations 被引量:1
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作者 Anna Churakova Dmitry Gunderov +1 位作者 Alexander Lukyanov Niklas Nollmann 《Acta Metallurgica Sinica(English Letters)》 SCIE EI CAS CSCD 2015年第10期1230-1237,共8页
The influences of thermal cycling treatment in the temperature range of B2-B19 martensitic transformations(-150 to 150 °C) on the Ti Ni alloy structure and properties were studied. Different states named the in... The influences of thermal cycling treatment in the temperature range of B2-B19 martensitic transformations(-150 to 150 °C) on the Ti Ni alloy structure and properties were studied. Different states named the initial coarse-grained(CG) state, the ultrafine-grained(UFG) state after ECAP(with a grain size of 200 nm), the state after ECAP and cold upsetting by 30% were considered. The results show that the microhardness and the strength increase in all the three states.According to the XRD analysis, a more significant increment in the dislocation density, resulting from thermal cycling, is observed in the UFG alloy than in the CG alloy. 展开更多
关键词 Thermal cycling tini alloy Equal-channel angular pressing Martensitic transformation
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Surface modification with SiO_2 coating on biomedical TiNi shape memory alloy by sol-gel method
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作者 杨曙 周非 +4 位作者 肖韬 徐大宝 李周 肖柱 肖自安 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2015年第11期3723-3728,共6页
The effect of heat treatment on the transformation temperature of Ti?52.2%Ni (mole fraction) alloy was studied using differential scanning calorimetry (DSC). The transformation temperatures of the alloy can be adjuste... The effect of heat treatment on the transformation temperature of Ti?52.2%Ni (mole fraction) alloy was studied using differential scanning calorimetry (DSC). The transformation temperatures of the alloy can be adjusted effectively by heat treatment. Dense and stable SiO2 coatings were deposited on the surface of the pre-oxidized TiNi alloy by sol?gel method. The bonding strength of films and matrix was (65.9±1.5) N. The electrochemical corrosion test shows that the TiNi alloy with SiO2 coating has excellent corrosion resistance in the Hank’s simulated body fluid. The release behaviors of Ni ion of the alloy with and without SiO2 coating implanted in the acoustic vesicle of guinea pig were studied by EDS testing, which was inhibited effectively by the dense and stable SiO2 coating on the alloy. 展开更多
关键词 tini shape memory alloy surface modification SiO2 coating corrosion resistance BIOCOMPATIBILITY
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Microstructures and properties of capacitor discharge welded joint of TiNi shape memory alloy and stainless steel 被引量:9
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作者 李明高 孙大谦 +2 位作者 邱小明 孙德新 殷世强 《China Welding》 EI CAS 2005年第2期95-100,共6页
Microstructures and properties of capacitor discharge welded (CDW) joint of TiNi shape memory alloy ( SMA ) and stainless steel (SS) were studied. The fracture characteristics of the joint were analyzed by means... Microstructures and properties of capacitor discharge welded (CDW) joint of TiNi shape memory alloy ( SMA ) and stainless steel (SS) were studied. The fracture characteristics of the joint were analyzed by means of scanning electron microscope ( SEM). Microstructures of the joint were examined by means of optical microscope and SEM. The results showed that the teusile strength of the inhomogeneous joint ( TiNi-SS joint) was low and the joint was brittle. Because TiNi SMA and SS melted, a brittle as-cast structure and compound were formed in the weld. The tensile strength and the shape memory effect (SME) of TiNi-SS joint were strongly influenced by the changes of composition and structure of the weld. Measures should be taken to prevent defects from forming and extruding excessive molten metal in the weld for improving the properties of TiNi-SS joint. 展开更多
关键词 tini shape memory alloy stainless steel capacitor discharge welding mechanical property microstructure
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Effects of Predeformation on the Reverse Martensitic Transformation of TiNi Shape Memory Alloy 被引量:14
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作者 Yanjun ZHENG Lishan CUI +1 位作者 Fan ZHANG Dazhi YANG 《Journal of Materials Science & Technology》 SCIE EI CAS CSCD 2000年第6期611-614,共4页
DSC was used to study the effects of predeformation on the reverse martensitic transformation of near-equiatomic TiNi alloy. Both the start temperature As and the finish temperature Af of the reverse transformation in... DSC was used to study the effects of predeformation on the reverse martensitic transformation of near-equiatomic TiNi alloy. Both the start temperature As and the finish temperature Af of the reverse transformation increased with increasing degree of predeformation, but the algebraic difference between As and Af decreased with increasing predeformation until it reached a minimum value, then remained unchanged with further deformation. Transformation heat also increased with increasing predeformation until it reached a maximum value, then decreased with further predeformation. All the phenomena above were considered to be closely related with the release of elastic strain energy during predeformation. 展开更多
关键词 tini Effects of Predeformation on the Reverse Martensitic Transformation of tini Shape Memory alloy
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Microstructures and mechanical properties of laser-welded TiNi shape memory alloy and stainless steel wires 被引量:4
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作者 李洪梅 孙大千 +2 位作者 韩耀武 董鹏 刘畅 《China Welding》 EI CAS 2010年第3期1-5,共5页
The Nd : YAG laser welding was used to join the TiNi shape memory alloy and AISI304 stainless steel wires. The microstructural features of the dissimilar material joint were analyzed. The tensile and hardness tests w... The Nd : YAG laser welding was used to join the TiNi shape memory alloy and AISI304 stainless steel wires. The microstructural features of the dissimilar material joint were analyzed. The tensile and hardness tests were carried out to examine the mechanical properties and microhardness distribution of the welded joint. The results show that the joint has the non-homogeneous microstructure and element distribution. The brittle phases such as Fe2 Ti , Fe Ti , Cr2 Ti , Ti3 Ni4, Feo 2 Ni4.s Ti5 and TiN mainly segregate in rich Ti region of fusion zone. The laser-welded joint has the tensile strength of 298 MPa with the elongation of 3.72 % and exhibits the brittle fracture features on the fracture surfaces. The reasons for low joint strength were discussed in this investigation. 展开更多
关键词 laser welding tini shape memory alloy stainless steel microstructure mechanical properties
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PREPARATION OF TiNi SHAPE MEMORY ALLOY POROSINT BY SHS 被引量:3
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作者 Chu Chenglin Li Bo +3 位作者 Wang Shidong Zhang Shuge Yang Xiaoxi Yin Zhongda 《中国有色金属学会会刊:英文版》 CSCD 1997年第4期85-88,共4页
TiNi shape memory alloy porosint, a promising artificial bone material, was prepared by self propagating high temperature synthesis method. It is found that the key technical parameter affecting the porosity, the sh... TiNi shape memory alloy porosint, a promising artificial bone material, was prepared by self propagating high temperature synthesis method. It is found that the key technical parameter affecting the porosity, the shape and distribution of the bores in the synthesized product is the pre heating temperature of green compact. While the pre heating temperature varies between 523 K and 673 K, the TiNi shape memory alloy porosint with wholly homogeneously distributing bores will be gained. The porosity of the porosint is 70% when the pre heating temperature is near 673 K, which is maximal under different pre heating temperatures. The compressive strength of TiNi SMA porosint with a porosity of 70% manufactured by SHS is up to 100 MPa and the percentage recovered is 92%. 展开更多
关键词 tini shape memory alloy porosint self-propagating high-temperature synthesis
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