邓喆,张晓泳,李志友,周科朝

• 1:中南大学粉末冶金国家重点实验室

摘要(Abstract)：

采用五因素四水平正交试验,研究固溶-时效中固溶温度和时间、固溶冷却方式、时效温度和时间对TC18钛合金显微组织及抗拉强度和伸长率等性能的影响。结果表明,抗拉强度的主要影响因素为固溶冷却方式与时效温度;伸长率的主要影响因素为固溶温度、固溶冷却方式及时效温度。降低固溶温度和延长时效时间均导致等轴α含量增加、尺寸增大,引起合金伸长率升高;降低固溶冷却速度使得等轴α含量增加、尺寸增大和细针α含量减少,合金伸长率上升、抗拉强度下降;降低时效温度导致细针α含量增加和等轴α含量降低、尺寸减小,合金抗拉强度大幅上升、伸长率小幅下降;时效时间对合金组织与性能的影响均较小。

关键词(KeyWords)： TC18钛合金;固溶-时效;正交试验;组织;力学性能

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金委员会创新研究群体科学基金(51021063);; 中央高校基本科研业务费前沿研究计划(2009QZZD007);; 湖南省科技重大专项(2010F51004);; 湖南省研究生科研创新项目(CX2012B044)

作者(Author): 邓喆,张晓泳,李志友,周科朝

DOI: 10.13289/j.issn.1009-6264.2014.08.005

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