文献类型：期刊文献

英文题名：Microstructure and mechanical property of linear friction welded nickel-based superalloy joint

作者：Ma, T. J.[1];Chen, X.[1,2];Li, W. Y.[1];Yang, X. W.[1];Zhang, Y.[1];Yang, S. Q.[1]

第一作者：Ma, T. J.

通讯作者：Li, WY[1]

机构：[1]Northwestern Polytech Univ, State Key Lab Solidificat Proc, Shaanxi Key Lab Frict Welding Technol, Xian 710072, Shaanxi, Peoples R China;[2]Xinxiang Univ, Mech & Elect Engn Coll, Xinxiang 453003, Henan, Peoples R China

第一机构：Northwestern Polytech Univ, State Key Lab Solidificat Proc, Shaanxi Key Lab Frict Welding Technol, Xian 710072, Shaanxi, Peoples R China

通讯机构：[1]corresponding author), Northwestern Polytech Univ, Sch Mat Sci & Engn, Xian 710072, Shaanxi, Peoples R China.

年份：2016

卷号：89

起止页码：85-93

外文期刊名：MATERIALS & DESIGN

收录：;EI(收录号：20154801617263);Scopus(收录号：2-s2.0-84947968685);WOS:【SCI-EXPANDED(收录号:WOS:000366225200010)】；

基金：The authors would like to thank the National Natural Science Foundation of China (51405389), the Fok Ying-Tong Education Foundation for Young Teachers in the Higher Education Institutions of China (131052), the Fundamental Research Funds for the Central Universities (3102014JC02010404), and the 111 Project (B08040) for their financial support.

语种：英文

外文关键词：Linear friction welding; Nickel-based superalloy; Microstructure; Mechanical property

摘要：Nickel-based superalloy joints were welded by linear friction welding under different processing conditions. The influences of process parameters on microstructure and mechanical properties of joints were investigated. The results indicate that sound microstructure such as fine recrystallized grains in the weld zone could be obtained under certain conditions. Microstructural examination shows that grains in the thermomechanically affected zone present no obvious deformation. Moreover, the segregation of some impurity elements along grain boundaries and the reversion of gamma '' and gamma' caused by high interface temperature during welding lead to the reduction of joint mechanical property. The microhardness and tensile strength of joints are lower than those of the parent metal. In addition, a weak layer including residues of oxides and carbides on the extremities of the joint is formed unexpectedly, which is detrimental to joint integrity. (C) 2015 Elsevier Ltd. All rights reserved.