Factors affecting Type IV creep damage in Grade 91 steel welds

被引：53
|
作者：
Parker, Jonathan [1 ]
机构：
[1] EPRI, Charlotte, NC 28262 USA
来源：
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2013年 / 578卷
关键词：
Creep; Grade; 91; Steel; Weld; Type IV;
D O I：
10.1016/j.msea.2013.04.045
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Differences in parent material heat treatment and composition apparently have remarkably little influence on the creep life of the heat affected zone (HAZ). Thus, tendency for Type IV cracking in the fine grained or intercritically heat treated regions of the HAZ does not appear to directly depend on the strength of the base steel. However, the current work indicates that the angle of the weld preparation changes the measured cross weld creep life. The results presented suggest that both development of residual stresses and the local properties of the constituent zones in the HAZ influence the tendency for Type IV damage in martensitic steels. (C) 2013 Elsevier B.V. All rights reserved.
引用
收藏
页码：430 / 437
页数：8
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