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Ti60钛合金/GH3128高温合金电子束焊接头脆裂原因分析

王廷1,2,张峰1,李宁1,侯兆滨3,张秉刚2,冯吉才1,2

王廷1,2,张峰1,李宁1,侯兆滨3,张秉刚2,冯吉才1,2. Ti60钛合金/GH3128高温合金电子束焊接头脆裂原因分析[J]. 焊接学报, 2017, 38(12): 19-22. DOI: 10.12073/j.hjxb.20170520001
引用本文: 王廷1,2,张峰1,李宁1,侯兆滨3,张秉刚2,冯吉才1,2. Ti60钛合金/GH3128高温合金电子束焊接头脆裂原因分析[J]. 焊接学报, 2017, 38(12): 19-22. DOI: 10.12073/j.hjxb.20170520001

Ti60钛合金/GH3128高温合金电子束焊接头脆裂原因分析

  • 摘要: 对Ti60钛合金和GH3128高温合金进行了电子束焊接,对接头显微组织、相成分和显微硬度进行分析. 结果表明,Ti60和GH3128电子束焊接性较差,在焊后产生裂纹. 焊缝内生成TiNi,Ti2Ni,TiCr2和TiNi3等脆性化合物,使得接头脆性增大. 焊缝区的硬度高于母材,钛侧焊缝区硬度值水平略高于镍侧焊缝区. 接头残余应力数值分析表面接头存在较大的横向残余拉应力,应力峰值达到704 MPa,使得钛/镍电子束焊接头在焊后随即开裂.
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  • 收稿日期:  2017-05-19

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