Effect of inhomogeneous microstructure on the stress corrosion cracking behavior of 316LN stainless steel weld joint under high-temperature and high-pressure water small punch test

被引：5

作者：

Fan, Yu ^{[1
]}

Wang, Feng ^{[2
]}

Lu, Yonghao ^{[1
]}

Liu, Tingguang ^{[1
]}

Shoji, Tetsuo ^{[1
,3
]}

机构：

[1] Univ Sci & Technol Beijing, Natl Ctr Mat Serv Safety, Beijing 100083, Peoples R China

[2] State Power Investment Corp Res Inst, Nucl Mat Div, Beijing 102209, Peoples R China

[3] Tohoku Univ, New Ind Creat Hatchery Ctr, Frontier Res Initiat, Sendai 9808579, Japan

来源：

CORROSION SCIENCE | 2024年 / 229卷

关键词：

Small punch test; High -temperature and high-pressure water; Stress corrosion cracking behavior; Weld joint; HEAT-AFFECTED ZONE; INTERGRANULAR CORROSION; GROWTH; DEPENDENCE; HAZ; SUSCEPTIBILITY; DEFLECTION; STRIATIONS; INITIATION; CHEMISTRY;

D O I：

10.1016/j.corsci.2024.111895

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The stress corrosion cracking (SCC) behavior of 316LN stainless steels (SS) weld joint in high-temperature and high-pressure (HTHP) water were investigated by the newly developed HTHP water small punch test. The results indicated that SCC behavior of weld joint were strongly influenced by the inhomogeneous microstructure. Intergranular fracture dominated the SCC process of heat affected zone (HAZ) and partial hardening was believed to be the main reason for the increased sensitivity of HAZ to SCC. All samples exhibited cleavage fracture characteristics, indicating that film-induced cleavage dominated the SCC process of SS and its welded joints in HTHP water.

引用

页数：15

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