摘要
对Ti-25%Nb(原子分数)合金在中温400℃进行等径弯角挤压(ECAP)研究,结果表明,Ti-25%Nb合金ECAP后强度、超弹性均得到提高。ECAP结合300℃时效1h后,合金的强度和超弹性将进一步提高。2道次ECAP及4道次ECAP并结合300℃时效1h,Ti-25%Nb合金呈现完全超弹性性,此时的应变量为1.5%。ECAP及时效处理后合金小应变(1.5%)变形时超弹性稳定,随着应变量增加,稳定性略有下降。
The equal channel angular pressing（ECAP）on Ti-25%Nb（atom fraction）alloy at 400℃ has been investigated.The strength and super-elasticity can be improved after ECAP for Ti-25%Nb alloy.The strength and super-elasticity would be improved further through ECAP and aging at 300 ℃for one hour.Ti-25%Nb alloy exhibits completely super-elasticity properties after two passes ECAP or aging at 300 ℃ following 4passes ECAP,and the recovery strain is 1.5%.The super-elasticity of the alloy is stable after ECAP and aging treatment with small strain（1.5%）,and the stable decreases with the increasing of the strain.
出处
《金属功能材料》
CAS
2015年第4期46-50,共5页
Metallic Functional Materials
基金
山东省高校科研发展计划(J12LA55)
上海市自然科学基金(No.A 13ZR 1427900)
青岛工学院2013年度董事长基金项目(2013KY001)
关键词
等径弯角挤压
强度
超弹性
equal channel angular pressing（ECAP）
strength
super-elasticity
