王永善,李培友,马昕迪,蒲娇

• 1:陕西理工大学材料科学与工程学院
• 2:上海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、万能试验机、显微硬度计以及纳米压痕仪等研究了不同热处理温度下Ti_(87)Nb_8Sn_5合金的显微组织和力学性能。结果表明:铸态和在773 K热处理下合金的组织是由大量α-Ti相和少量的第二相Ti_3Sn相所组成,在873 K和973 K热处理下合金的组织是由大量的α-Ti和少量β-Ti相所组成。室温铸态试样以及在773 K热处理试样的应力-应变曲线呈现出超弹性;而在873 K和973 K热处理的合金具有高的屈服强度,大的塑性形变以及大的弹性能。在873 K和973 K热处理下合金的约化弹性模量(E_r)值分别为43.3 GPa和36.2 GPa,接近人骨的弹性模量值(10～30 GPa)。另外,在873 K和973 K热处理下合金具有大的H/E_r和H~3/E■值,说明了该热处理条件下合金分别具有高的耐磨抗力和高的耐磨性。

关键词(KeyWords)： Ti-Nb-Sn合金;显微组织;热处理温度;力学性能;纳米压痕

Abstract:

Keywords:

基金项目(Foundation): 陕西理工大学博士科研启动基金(SLGKYQD2-22)

作者(Author): 王永善,李培友,马昕迪,蒲娇

DOI: 10.13289/j.issn.1009-6264.2020-0046

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