陈旺,孙洪吉,龚伦军,张德闯,林建国

• 1:湘潭大学材料科学与工程学院
• 2:湘潭大学低维材料及其应用技术教育部重点实验室

摘要(Abstract)：

研究冷轧变形量(40%、75%和95%)和退火温度(650、750和850℃)对亚稳β钛合金Ti-7.5Nb-4Mo-2Sn(原子分数,%)的显微组织、织构和超弹性的影响。结果表明:不同冷轧变形量变形后,合金中出现了{111}<110>,{111}<112>和{001}<110>型冷轧织构,随变形量增大,冷轧织构强度有小幅度增加,其中以{111}<112>、{111}<110>型织构强度增幅度最大;经过650~850℃退火后,合金发生再结晶,并形成了再结晶织构,其中变形量为95%、650℃退火后,试样的组织由细小的等轴状β相构成,同时形成了较强的{112}<110>,{111}<112>再结晶织构,合金试样表现出较好的超弹性,其应变回复率71.5%;细小的等轴晶组织和{111}<112>再结晶织构,能提高合金的超弹性能。

关键词(KeyWords)： β钛合金;冷轧;织构;超弹性

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金青年基金(11402220);; 湖南省科技计划项目(2016JC2005);; 湖南省战略新兴产业(科技攻关和重大科技成果转化项目(2016GK4035)

作者(Author): 陈旺,孙洪吉,龚伦军,张德闯,林建国

DOI: 10.13289/j.issn.1009-6264.2018-0153

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