刘耀辉,崔文芳,程军

• 1:东北大学材料各向异性与织构(教育部)重点实验室材料科学与工程学院
• 2:西北有色金属研究院生物材料研究所

摘要(Abstract)：

研究了Ti-6Al-7Nb合金在不同热处理工艺后的显微组织、硬度、拉伸性能和疲劳性能。结果表明:在930℃×30 min/水冷+600℃×4 h时效热处理后,亚稳定β相中析出的亚微米尺度片层状次生α相使合金得到强化,而一定比例的等轴初生α相提高了合金均匀塑性变形能力,合金的屈服强度为920.1 MPa,抗拉强度为982.4 MPa,伸长率为16.3%,断面收缩率为47.5%,疲劳极限大于490 MPa,满足外科植入物用钛及钛合金加工国家标准要求。

关键词(KeyWords)： Ti-6Al-7Nb合金;热处理工艺;显微组织;力学性能

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(51525101)

作者(Author): 刘耀辉,崔文芳,程军

DOI: 10.13289/j.issn.1009-6264.2017-0376

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