超弹性β-Ti合金研究进展  

Research Progress of Superelastic β-titanium Alloys

作　　者：马广昊 李强[2] 常春涛 何美凤[1] 王新敏[4] 潘登[2] MA Guanghao;LI Qiang;CHANG Chuntao;HE Meifeng;WANG Xinmin;PAN Deng(School of Materials Science and Engineering,University of Shanghai for Science and Technology,Shanghai 200093;School of Mechanical Engineering,University of Shanghai for Science and Technology,Shanghai 200093;School of Mechanical Engineering,Dongguan University of Technology,Dongguan 523808,China;Ningbo Institute of Industrial Technology,CAS,Ningbo 315201)

机构地区：[1]上海理工大学材料科学与工程学院,上海200093 [2]上海理工大学机械工程学院,上海200093 [3]东莞理工学院机械工程学院,广东东莞523808 [4]中国科学院宁波工业技术研究院,浙江宁波315201

出　　处：《有色金属材料与工程》2018年第5期46-50,共5页Nonferrous Metal Materials and Engineering

基　　金：上海市自然科学基金(15ZR1428400);上海市科技支撑计划(16060502400)

摘　　要：生物医用β-Ti合金因具有低弹性模量和超弹性的特点而备受关注。亚稳定β-Ti合金的超弹性来源于应力诱发的β→α″马氏体转变及其逆转变。以分析Ti-Nb基和Ti-Mo基两合金体系为基础,对β-Ti合金的研究现状进行了归纳总结,阐述了合金元素添加对β相马氏体转变和超弹性的影响,指出提高超弹性的关键是通过提高β相的屈服强度和调整成分获得合适的Ms点,随后介绍了超弹性β-Ti合金经不同热处理后能够获得更高的超弹性回复,最后对生物医用β-Ti合金的发展进行了展望。Biomedicalβ-Ti alloys have attracted much attention owning to their noticeable characteristic including low modulus and super elasticity.Super-elasticity in metastableβ-Ti alloys is caused by a stress-inducedβ→α″martensite transformation and the reverse transformation.The research progress ofβ-Ti alloys is summarized by analyzing Ti-Nb-based and Ti-Mo-based alloys.The influence of alloying elements on martensitic transformation and super-elasticity ofβphase are elaborated.It is pointed out that the key of improving super-elasticity is increasing the yield strength ofβphase and obtaining proper Ms points by adjusting composition.Improvement in super-elasticity ofβ-Ti alloys by heat treatment is introduced subsequently.Finally,the development of biomedicalβ-Ti alloys is prospected.

关 键 词：β-Ti合金 马氏体相变 超弹性 热处理 

分 类 号：TG151.2[金属学及工艺—热处理]