石世威,袁志山,王永辉,崔跃,李君涛,冯昭伟,尚再艳,朱明

• 1:有研亿金新材料有限公司
• 2:有研医疗器械(北京)有限公司

摘要(Abstract)：

通过差示扫描量热仪(DSC)、X射线衍射仪(XRD)、扫描电镜(SEM)和透射电镜(TEM)研究了固溶时效对Ti-50.8Ni和Ti-50.8Ni-0.3Cr合金显微组织及相变特性影响。结果表明,固溶后两种合金组织都由原始拉拔纤维组织转变为等轴晶粒,晶粒随固溶温度升高而长大,固溶后母相主要是B2(B19’)相,同时发现存在Ti Ni3粒子。两种合金的马氏体相变峰值温度Mp随着固溶温度升高及时间延长先降低再升高。500℃时效0.5 h时Ti-50.8Ni合金加热/冷却相变类型是A→R→M1→M2/M→Rr→A,Ti-50.8Ni-0.3%Cr合金相变类型是A→R→M1→M2/M→Rr1→Rr2→A;时效1 h时,两种合金加热/冷却相变类型是A→R→M/M→Rr→A,时效2 h后两种合金加热/冷却相变类型是A→R→M/M→A。

关键词(KeyWords)： 形状记忆合金;固溶时效;显微组织;相变

Abstract:

Keywords:

基金项目(Foundation): 2015年工业转型升级强基项目(TC150B5C0-3)

作者(Author): 石世威,袁志山,王永辉,崔跃,李君涛,冯昭伟,尚再艳,朱明

DOI: 10.13289/j.issn.1009-6264.2017.02.008

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