江训焱,程东海,陈益平,胡德安

• 1:南昌航空大学航空制造工程学院

摘要(Abstract)：

采用光学显微镜和MTS810拉伸试验机等分析了不同工艺淬火后TC4钛合金激光焊接接头的超塑性变形行为和显微组织,研究了淬火对TC4钛合金激光焊接接头超塑性变形的影响。结果表明:淬火能够提高激光焊接接头的超塑性变形均匀性,且随着淬火温度的升高,激光焊接头超塑性变形均匀性提高;采用接头超塑性变形后焊缝与母材的截面收缩率之比K来表征接头变形后的均匀性,当淬火温度为1000℃,在变形温度940℃及应变速率10~(-4)s~(-1)下进行超塑性变形时,接头变形均匀性达到最大,此时K=0.9。

关键词(KeyWords)： 激光焊;淬火处理;超塑性;均匀性

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(51465042)

作者(Author): 江训焱,程东海,陈益平,胡德安

DOI: 10.13289/j.issn.1009-6264.2017-0165

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