文献类型：期刊文献

英文题名：Frictional heat induced morphological responses at the interface in rotary friction welding of austenitic alloys: corona-bond and heat-pattern

作者：Jin, Feng[1];Shi, Junmiao[2];Wen, Guodong[3];Fu, Banglong[4];Shen, Junjun[4];Wang, Shiqing[5];Wu, Yanbo[6];Xiong, Jiangtao[1];Li, Jinglong[1]

机构：[1]Northwestern Polytech Univ, Shaanxi Key Lab Frict Welding Technol, Xian 710072, Peoples R China;[2]East China Univ Sci & Technol, Key Lab Pressure Syst & Safety, Minist Educ, Shanghai 200237, Peoples R China;[3]China Coal Technol & Engn Grp Corp, Xian Res Inst, Xian 710077, Peoples R China;[4]Helmholtz Zentrum Hereon, Inst Mat Mech, Solid State Mat Proc, Max Planck Str 1, D-21502 Geesthacht, Germany;[5]Xian Shiyou Univ, Sch Mat Sci & Engn, Xian 710065, Peoples R China;[6]Off Peoples Govt Inner Mongolia Autonomous Reg Do, Jiuquan, Peoples R China

年份：2023

卷号：23

起止页码：5972

外文期刊名：JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T

收录：;EI(收录号：20231213774604);WOS:【SCI-EXPANDED(收录号:WOS:000964160800001)】；

基金：This work was supported by the research fund of the National Natural Science Foundations of China (Grant Nos. 52205416, 52075551), the China Postdoctoral Science Foundation (2021M 692627) and the Key Research and Development Program of Shaanxi Province (No. 2022GY-224). Feng Jin is grateful for financial support from the Chinese Scholarship Council (CSC 202106290001). The authors declare they have no conflict of interest.

语种：英文

外文关键词：Rotary friction welding; Frictional heat; Morphological responses; Corona-bond; Heat-pattern; Austenitic alloys

摘要：Frictional heat induced morphological responses of austenitic alloys SUS304, A286, and Inconel 718 at the interface in rotary friction welding was focused in this study, addressing initiation, evolution of corona-bond and the formation of heat-pattern. Summative models that describe the location and width of corona-bond at initiation, the corona-bond evo-lution mode and the formation of heat-patterns were given. The results show that when the corona-bond initiates at 0.33 R similar to R, it fills the interface to form a lens-shaped heat -pattern. Inside this morphology, recrystallized ultrafine grains are formed to provide a superior performance. When the corona-bond initiates at 0-0.33 R with a width >0.4 R, it spreads to periphery to form a straight-line-shaped heat-pattern. Inside this heat-pattern, deformed grains and sub-boundaries are formed. The tensile strength of straight-line heat -pattern is lower than that of lens-shaped heat-pattern. When the corona-bond initiates at 0-0.33 R with a width <= 0.4 R, it does not spread but concentrates itself at center to form a spindle-shaped heat-pattern consisted of a 'spindle body' at center and a 'friction line' at periphery. Spindle body corresponds to a region made up of equiaxed recrystallized ul-trafine grains, whereas the friction line corresponds to recrystallized grains and sub -structured grains. The formation of the friction line makes neglectable effect on local the strength but it does lower the elongation, where the local elongation of the friction line decreases to 6%-9% compared to 18% of a spindle body. (C) 2023 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).