High-Temperature Low-Cycle Fatigue Behavior of 625 Nickel-Base Superalloy Welding Joint

被引：1
|
作者：
Wang, Yuan-yuan [1 ]
Wang, Bao-sen [2 ]
Chen, Li-jia [1 ]
机构：
[1] Shenyang Univ Technol, Sch Mat Sci & Engn, Shenyang 110870, Peoples R China
[2] Inst Welding & Surface Technol R&D Ctr, Baoshan Iron Steel Co LTD Res Inst, Shanghai 201900, Peoples R China
来源：
MATERIALS, MACHINES AND DEVELOPMENT OF TECHNOLOGIES FOR INDUSTRIAL PRODUCTION | 2014年 / 618卷
关键词：
Nickel base superalloy; Welding joint; High temperature low cycle fatigue; Cyclic stress response; Failure mode; ALLOY-625; CREEP;
D O I：
10.4028/www.scientific.net/AMM.618.120
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
High temperature low cycle fatigue properties and fracture behavior of Inconel 625 nickel-base superalloy welding joint at 760 degrees C were investigated under fully reversed total strain-controlled mode. The fatigue life and cyclic stress-strain data were analyzed to determine the individual strain fatigue parameters. It is noted that the welding joint exhibits the cyclic strain hardening and stability. The fatigue cracks initiate predominantly on the free surface of fatigue specimens and propagate in an intergranular mode or a mixed transgranular and intergranular mode.
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页码：120 / +
页数：2
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