Rotary friction welding of Inconel 718-AISI 304 stainless steel dissimilar joint

被引：6
|
作者：
Ajay, V. [1 ]
Kumar, M. Naveen [1 ]
Babu, N. Kishore [1 ,3 ]
Kumar, T. Mahesh [1 ]
Krishna, K. Vamshi [1 ]
Reddy, G. Madhusudan [2 ]
机构：
[1] Natl Inst Technol Warangal, Dept Met & Mat Engn, Hanamkonda, India
[2] Def Met Res Lab, Hyderabad, India
[3] Natl Inst Technol, Dept Met & Mat Engn, Warangal 506004, Hanamkonda, India
来源：
MATERIALS SCIENCE AND TECHNOLOGY | 2023年 / 39卷 / 15期
关键词：
Rotary friction welding; Inconel; 718; post-weld heat treatment; dissimilar welding; WELDED ALLOY 718; MECHANICAL-PROPERTIES; STAINLESS-STEEL; MICROSTRUCTURE; INERTIA; SUPERALLOY; NICKEL;
D O I：
10.1080/02670836.2023.2187146
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Nickel-based superalloy Inconel 718 and austenitic stainless steel AISI 304 are joined by rotary friction welding. The changes in microstructure and mechanical properties of the dissimilar joint for solutionising, solutionising + aging, and post-weld aging treatment, with a prior solution heat treatment, are studied. Two distinct microstructural zones, the FDZ (fully deformed zone) and the TMAZ (thermo-mechanically affected zone) are observed in all weldments. The post-weld aged joint sample shows the highest tensile strength and hardness due to the precipitation of gamma ' (Ni-3(Ti, Al)) and gamma('') (Ni3Nb) strengthening precipitates. The solution-treated sample shows the highest yield strength, while the solutionising + aging treatment is found to deteriorate the mechanical properties of the dissimilar joint. The observed changes in the mechanical properties are investigated based on microstructure and electron dispersive spectroscopy.
引用
收藏
页码：1950 / 1960
页数：11
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