Effects of Matrix and Dendrite Boundary Composition on Stress Corrosion Cracking Performance of Alloy 52M Buttering Layer in Simulated Pressurized Water Reactor Primary Water

被引：2

作者：

Ma, Jiarong ^{[1
,2
]}

Xiong, Qi ^{[1
,2
]}

Xu, Xinhe ^{[1
,2
]}

Cui, Tongming ^{[1
,2
]}

Lu, Zhanpeng ^{[1
,2
]}

Shoji, Tetsuo ^{[3
]}

机构：

[1] Shanghai Univ, Inst Mat, Sch Mat Sci & Engn, Shanghai 200072, Peoples R China

[2] Shanghai Univ, State Key Lab Adv Special Steels, Shanghai 200072, Peoples R China

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

来源：

CORROSION | 2024年 / 80卷 / 01期

基金：

国家重点研发计划;

关键词：

52M buttering; oxidation; postweld heat treatment; pressurized water reactor; stress corrosion cracking; DISSIMILAR METAL WELD; CR-FE ALLOYS; POST-WELD; HEAT-TREATMENT; STAINLESS-STEEL; IRON CONTENT; NI; MICROSTRUCTURE; SUSCEPTIBILITY; DEFORMATION;

D O I：

10.5006/4392

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The oxidation and stress corrosion cracking (SCC) behaviors of Alloy 52M buttering (52Mb) layer were studied in simulated pressurized water reactor (PWR) primary water after microstructure characterization. The 52Mb layer was first postweld heat treatment (1st-PWHT) and follow-up PWHT (FU-PWHT). Two dilution zones (DZs) were found in both the 1st-PWHT and FU-PWHT 52Mb samples. FU-PWHT decreased the Cr content in the first DZ, enhancing the oxidation rate and accelerating the formation of the local oxidation penetration zone at the oxide/substrate interface. Lower Cr content and high Fe content in the DZ were detrimental to the SCC resistance of the 52Mb in PWR primary water.

引用

页码：69 / 84

页数：16

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