王铎,王永善,孟凡莹,刘亚玲,董洪峰,李培友

• 1:陕西理工大学材料科学与工程学院

摘要(Abstract)：

采用X射线衍射仪、光学显微镜、扫描电镜、透射电镜和电子万能试验机等研究了不同温度热处理后快速凝固B2型Co_(47)Zr_(47)Ti_6合金的微观组织及力学性能。结果表明：铸态和热处理态Co_(47)Zr_(47)Ti_6合金的微观组织均由大量B2-ZrCo相和少量Zr_2Co相组成。在3个热处理温度下，合金的相结构并未发生改变。823 K热处理后合金具有较大的屈服强度(888 MPa),而873 K热处理后合金具有最小的屈服强度(733 MPa)。873 K热处理后合金的弹性模量(17.3 GPa)位于人骨的弹性模量范围内(10～30 GPa),表明该合金是一种具有发展潜力的生物医用合金。对于823 K和873 K热处理后的合金，大量裂纹的形成及扩展或韧窝的形成均能吸收大量的塑性变形功，从而使得这两种热处理合金具有较高的塑性变形。

关键词(KeyWords)： Co-Zr合金;热处理温度;显微组织;力学性能

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 王铎,王永善,孟凡莹,刘亚玲,董洪峰,李培友

DOI: 10.13289/j.issn.1009-6264.2022-0096

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