Microstructure-dependent mechanical properties of an electron beam welded Ni-Co based superalloy

被引：0
|
作者：
Zhou, Haijing [1 ,2 ,4 ]
Cai, Shiping [3 ]
Dong, Jinxin [1 ]
Yu, Hongyao [1 ,2 ]
Bi, Zhongnan [1 ,2 ]
机构：
[1] Cent Iron & Steel Res Inst, Beijing Key Lab Adv High Temp Mat, Beijing 100081, Peoples R China
[2] Beijing GAONA Mat & Technol Co Ltd, Beijing 100081, Peoples R China
[3] Beijing Jiaotong Univ, Mat Sci & Engn Res Ctr, Sch Mech Elect & Control Engn, Beijing 100044, Peoples R China
[4] Beijing GAONA Mat & Technol Co Ltd, 19 Daliushu Nan Rd, Beijing 100081, Peoples R China
来源：
MATERIALS LETTERS | 2024年 / 357卷
关键词：
Elastic properties; Microstructure; Microstructure-dependent mechanical; properties; In -situ SEM; Welding;
D O I：
10.1016/j.matlet.2023.135801
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The microstructure gradient of electron beam welded Ni-Co based superalloy was investigated. In-situ tensile test and micro-hardness measurement were performed to analyze the microstructure-dependent mechanical properties. The temperature gradient during welding process resulted in obvious changes in grain size, gamma' volume fraction and dislocation density at the weld joint. The mechanical properties were influenced by the microstructure evolution, while the effects of microstructure evolution on micro-hardness and Young's modulus were different. Effects of microstructure parameters on the strengthening mechanisms and mechanical properties were analyzed in detail.
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页数：4
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