吴凯,姚为,范小龙,尤逢海,王志敏

• 1:北京航星机器制造有限公司

摘要(Abstract)：

采用光学显微镜、拉伸实验机及显微硬度计研究了热处理对BTi-6431S合金激光焊焊接接头组织与性能的影响。结果表明,BTi-6431S合金激光焊原始焊接组织为块状初生α相和片层状β相转变组织组成,经不同温度热处理获得不同形态α相。随着热处理温度的升高,次生α相的体积分数增加;焊接接头室温与高温抗拉强度和屈服强度逐渐升高,伸长率呈现先升高后降低的变化趋势。经650℃热处理后,BTi-6431S合金激光焊接接头室温显微硬度最高。

关键词(KeyWords)： BTi-6431S合金;热处理;激光焊;组织;性能

Abstract:

Keywords:

基金项目(Foundation): 国防技术基础科研项目(JSCG2012204B002)

作者(Author): 吴凯,姚为,范小龙,尤逢海,王志敏

DOI: 10.13289/j.issn.1009-6264.2015.06.020

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