基体和枝晶边界成分对模拟压水堆一次水中合金 52M 黄油层应力腐蚀开裂性能的影响

IF 1.1 4区材料科学 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY

Corrosion Pub Date : 2023-11-16 DOI:10.5006/4392

Jiarong Ma, Qi Xiong, Xinhe Xu, Tongmin Cui, Zhanpeng Lu, Tetsuo Shoji

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引用次数: 0

摘要

在对合金 52M 黄油层（52Mb）进行微观结构表征后，研究了其在模拟压水堆（PWR）一次水中的氧化和应力腐蚀开裂（SCC）行为。52Mb 层经过了第一次焊后热处理（1st-PWHT）和后续热处理（FU-PWHT）。在 52Mb 样品中，1st-PWHT 和 FU-PWHT 都发现了两个稀释区 (DZ)。FU-PWHT 降低了第一稀释区的铬含量，提高了氧化速度，加速了氧化物/基底界面局部氧化渗透区的形成。稀释区中较低的铬含量和较高的铁含量不利于 52Mb 在压水堆原水中的抗 SCC 性能。

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Effects of matrix and dendrite boundary composition on stress corrosion cracking performance of Alloy 52M buttering layer in simulated PWR primary water

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 post-weld 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 dilution zone, 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 dilution zone were detrimental to the SCC resistance of the 52Mb in PWR primary water.

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来源期刊

Corrosion MATERIALS SCIENCE, MULTIDISCIPLINARY-METALLURGY & METALLURGICAL ENGINEERING

CiteScore

2.80

自引率

12.50%

发文量

审稿时长

3 months

期刊介绍： CORROSION is the premier research journal featuring peer-reviewed technical articles from the world’s top researchers and provides a permanent record of progress in the science and technology of corrosion prevention and control. The scope of the journal includes the latest developments in areas of corrosion metallurgy, mechanisms, predictors, cracking (sulfide stress, stress corrosion, hydrogen-induced), passivation, and CO2 corrosion. 70+ years and over 7,100 peer-reviewed articles with advances in corrosion science and engineering have been published in CORROSION. The journal publishes seven article types – original articles, invited critical reviews, technical notes, corrosion communications fast-tracked for rapid publication, special research topic issues, research letters of yearly annual conference student poster sessions, and scientific investigations of field corrosion processes. CORROSION, the Journal of Science and Engineering, serves as an important communication platform for academics, researchers, technical libraries, and universities. Articles considered for CORROSION should have significant permanent value and should accomplish at least one of the following objectives: • Contribute awareness of corrosion phenomena, • Advance understanding of fundamental process, and/or • Further the knowledge of techniques and practices used to reduce corrosion.