EFFECTS OF GRAIN BOUNDARY MORPHOLOGIES ON STRESS CORROSION CRACKING OF ALLOY 600

被引:4
|
作者
Kim, H. P. [1 ]
Choi, M. J. [1 ]
Kim, S. W. [1 ]
Kim, D. J. [1 ]
Lim, Y. S. [1 ]
Hwang, S. S. [1 ]
机构
[1] Korea Atom Energy Res Inst, Nucl Mat Safety Res Div, 989-111 Daedeok Daero, Daejeon 305353, South Korea
基金
新加坡国家研究基金会;
关键词
Alloy; 600; NaOH; stress corrosion cracking; grain boundary morphologies; CREEP-RUPTURE PROPERTIES; INTERGRANULAR CORROSION; SENSITIZATION; MICROSTRUCTURE; INCONEL-600; BEHAVIOR; DESIGN;
D O I
10.1515/amm-2017-0219
中图分类号
TF [冶金工业];
学科分类号
0806 ;
摘要
Effects of grain boundary morphologies on stress corrosion cracking (SCC) of Alloy 600 have been studied in 40% NaOH at 315 degrees C using C-ring specimens. The configuration of the grain boundary and the intergranular carbide density were controlled by heat treatment. SCC tests were performed at + 150 mV above the corrosion potential. The specimen with a serrated grain boundary showed higher SCC resistance than that with a straight grain boundary. This appears to be caused by the fact that the specimen with the serrated grain boundary has longer SCC path. SCC resistance also increased with intergranular carbide density probably due to enhanced relaxation of stress at intergranular carbide.
引用
收藏
页码:1415 / 1419
页数:5
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