Heterogeneous creep behavior of a CrMoV multi-pass weld metal

被引：17
|
作者：
Yang, Bin [1 ]
Xuan, Fu-Zhen [1 ]
Liu, Xin-Ping [1 ]
机构：
[1] East China Univ Sci & Technol, Key Lab Pressure Syst & Safety, Minist Educ, Sch Mech & Power Engn, Shanghai 200237, Peoples R China
来源：
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2017年 / 690卷
基金：
中国国家自然科学基金;
关键词：
Inhomogeneous microstructure; Creep behavior; Multi-pass weld; Damage; ANISOTROPIC CREEP; TEMPERATURE; WELDMENTS; FRACTURE; MODEL; ZONE;
D O I：
10.1016/j.msea.2017.02.084
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Effect of inhomogeneous microstructure of a CrMoV multi-pass weld metal on creep behavior was investigated experimentally. Four subzones in the multi-pass weld metal were identified in terms of the grain size and morphology. Compared to the micro-hardness and tensile strength, a remarkable different creep behavior was achieved for different subzones. Especially, the heterogeneous creep deformation was observed during the tertiary creep stage. Such a heterogeneous creep behavior of multi-pass weld metal was ascribed to the coupling effect of inhomogeneous microstructure and loading direction.
引用
收藏
页码：6 / 15
页数：10
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