Effect of heat treatment on microstructure and tensile properties of electron beam welded TC4/Ti60 joint

WANG Shiqing; XING Bo; ZHAO Qizhe; JIAO Yingxiang; QIANG Wei

doi:10.7512/j.issn.1001-2303.2020.05.03

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Effect of heat treatment on microstructure and tensile properties of electron beam welded TC4/Ti60 joint
Vol. 50, Issue 5, Pages: 16-20(2020)
DOI： 10.7512/j.issn.1001-2303.2020.05.03

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WANG Shiqing, XING Bo, ZHAO Qizhe, et al. Effect of heat treatment on microstructure and tensile properties of electron beam welded TC4/Ti60 joint. [J]. 50(5):16-20(2020)
DOI：

WANG Shiqing, XING Bo, ZHAO Qizhe, et al. Effect of heat treatment on microstructure and tensile properties of electron beam welded TC4/Ti60 joint. [J]. 50(5):16-20(2020) DOI： 10.7512/j.issn.1001-2303.2020.05.03.

摘要

采用不同热处理工艺对10 mm厚的钛合金TC4/Ti60电子束焊接接头进行了研究,对比分析了TC4/Ti60接头在分别经历退火700℃×2 h(AC)及固溶时效980℃×1 h(FC)+700℃×2 h(AC)后,在显微组织、显微硬度及拉伸性能等方面的特征。结果表明:TC4/Ti60接头经过退火后,组织和性能与焊态相当,但当TC4/Ti60接头经过固溶时效后,TC4/Ti60接头的组织更均匀,硬度及强度比退火时略低,并且塑性增加,综合性能良好。

Abstract

The electron beam welding（EBW） joint of 10 mm thick titanium alloy TC4/Ti60 was studied by different heat treatment processes. The microstructure,microhardness and tensile properties of TC4/Ti60 joint after annealing and solution aging were compared and analyzed. The results show that after annealing,the microstructure and properties of TC4/Ti60 joint are similar to those of as welded joint;after solution aging,the microstructure of TC4/Ti60 joint is more uniform,the hardness and strength are slightly lower than that of annealed joint,but the plasticity is increased and the comprehensive properties are good.

关键词

热处理TC4/Ti60接头电子束焊接退火固溶时效

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