| Friction welding of TiAI intermetallics and structural steel by applying Inconel 718 as interlayer |
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| 作者姓名： | 李京龙 王忠平 熊江涛 张赋升 王艳芳 |
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| 作者单位： | [1]School of Materials Science and Engineering, Northwestern Polytechnical University, Xi＇an, 710072 [2]Shaanxi Polytechnic Institute,Xianyang, 712000 |
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| 摘 要： |
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| 关 键 词： | TiAI合金 金属间化合物 摩擦焊 结构钢 Inconel 718 |
Friction welding of TiAI intermetallics and structural steel by applying Inconel 718 as interlayer |
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| Li Jinglong , Wang Zhongping , Xiong Jiangtao , Zhang Fusheng , Wang Yanfang.Friction welding of TiAI intermetallics and structural steel by applying Inconel 718 as interlayer[J].China Welding,2005,14(2):85-89. |
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| Authors: | Li Jinglong Wang Zhongping Xiong Jiangtao Zhang Fusheng Wang Yanfang |
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| Abstract: | Inconel 718 with thickness ranged from 0. 1 - 1.7 mm was chosen as interlayer to promote weldability in friction welding of TiAl intermetallics and structural steel such as AIS14140, in which the welded joint presents single fin showing less welding deformation on TiAl side. The correlations between tensile strength and the interlayer thickness were analyzed and fitted to a model. It indicates an optimum interlayer thickness ranged from 0.9 - 1.1 mm where the tensile strength reaches as high as 360 MPa. Otherwise, while the interlayer thickness decreases to 0. 1 mm, brittle compounds of TiC, Al2Ti4C2 and MTC3 are formed in the welded zone so that the tensile strength decays. Thicker interlayer should be also avoided as double joints may occur at TiAl -lnconel 718 and lnconel 718 -AISI 4140, respectively, which lowers the tensile strength to some extent. |
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| Keywords: | friction welding intermetallics TiAI interlayer Inconel 718 AISI 4140 |
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