张旻,帅美荣,李海斌,王建梅,常彬彬

• 1:太原科技大学重型机械教育部工程研究中心

摘要(Abstract)：

采用光学显微镜、扫描电镜、电子万能材料试验机和显微硬度仪等研究了不同热处理工艺对不同形变工艺(二辊连轧、三辊连轧)制备的TC4钛合金棒材的显微组织演变、α相晶粒尺寸及性能的影响。结果表明：三辊轧制制备的合金经950℃退火处理1 h后，等轴α相、针状α相、马氏体α′、α″基体的晶粒尺寸均较小，且时效处理后α相平均尺寸和面积占比均低于二辊轧制制备的合金；细小的α相晶粒有利于阻碍相界空洞生长，三辊轧制制备的TC4合金棒材具有较高的拉伸延性和屈强比(0.966),更有利于机械零件受载。

关键词(KeyWords)： TC4钛合金;显微组织;晶粒尺寸;力学性能

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(52075357);; 山西省重点研发计划(201903D121043)

作者(Author): 张旻,帅美荣,李海斌,王建梅,常彬彬

DOI: 10.13289/j.issn.1009-6264.2021-0434

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