刘涛,史正宏,雷经发,王璐,柏威

• 1:安徽建筑大学机械与电气工程学院
• 2:工程机械智能制造安徽省教育厅重点实验室

摘要(Abstract)：

首先对TC4钛合金进行了不同温度(850、900、920、960和1000℃)的固溶处理，采用X射线衍射(XRD)、扫描电镜(SEM)和电子背散射衍射(EBSD)技术研究了不同温度固溶处理后TC4钛合金试样的显微组织和物相，采用分离式霍普金森拉杆(SHTB)实验装置测试了其动态拉伸力学性能，并对断口形貌进行分析。结果表明：随着固溶温度的升高，TC4钛合金的初生α相含量降低，针状α′相含量升高，晶粒细化、小角度晶界占比增加且择优取向强度增大；在高应变率拉伸载荷作用下，随固溶温度的升高，TC4钛合金的动态屈服强度增加、断裂伸长率降低；未固溶和固溶处理后的试样动态拉伸断口均表现出韧性断裂特征，固溶温度为850℃时塑性最好。

关键词(KeyWords)： TC4钛合金;固溶温度;微观组织;动态力学性能;断口

Abstract:

Keywords:

基金项目(Foundation): 安徽省高等学校自然科学研究重大项目(2023AH040036);; 合肥市自然科学基金项目(2024035);; 安徽高校协同创新项目(GXXT-2023-025)

作者(Author): 刘涛,史正宏,雷经发,王璐,柏威

DOI: 10.13289/j.issn.1009-6264.2024-0423

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