TC4钛合金线性摩擦焊接头组织及残余应力分布特征

doi:10.16080/j.issn1671-833x.2015.17.127

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摘要使用光学显微镜和X射线衍射法对TC4钛合金线性摩擦焊接头组织和残余应力分布特征进行研究。结果表明：热机影响区内的α相和β转变体在线性摩擦焊接过程中被不同程度地拉长，变形严重，焊缝区存在超细晶粒区。焊后接头的残余应力场表现为在一侧为拉应力，而在另一侧同时存在拉应力区和压应力区。垂直于焊缝的横截面上，垂直焊缝方向的残余应力在焊缝中心和焊缝端部分别呈现V字形和W字形分布特征，而在焊缝纵截面上，平行焊缝方向的残余应力分布特征为中心段存有较高的残余拉应力，至焊缝两端逐渐下降为压应力。

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	张杰
	张田仓
	陆业航
	张庆云
	李菊

关键词 ：钛合金, 线性摩擦焊, 残余应力, X射线衍射

引用本文:

张杰，张田仓，陆业航，张庆云，李菊. TC4钛合金线性摩擦焊接头组织及残余应力分布特征[J]. 航空制造技术, 2015, 58(17): 127-130.

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http://www.amte.net.cn/CN/10.16080/j.issn1671-833x.2015.17.127 或 http://www.amte.net.cn/CN/Y2015/V58/I17/127

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