模拟原水环境下冷加工 316LN 不锈钢/Inconel 52 M 焊点熔合边界的应力腐蚀开裂行为

IF 7.4 1区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Corrosion Science Pub Date : 2024-11-18 DOI:10.1016/j.corsci.2024.112581

Wei Sun , Bin Wu , Hongliang Ming , Fanjiang Meng , Jianqiu Wang , En-Hou Han

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引用次数: 0

摘要

研究了冷加工（CW）316LN 不锈钢/Inconel 52 M 焊接接头（20 % CW 316LN/52M-FB）熔合边界（FB）的微观结构。在模拟压水反应堆（PWR）一次水中对 FB 区域进行了应力腐蚀裂纹生长率（SCCGR）测试。结果发现，沿 FB 和附近的 316LN 区域都出现了应力腐蚀裂纹（SCC）。在铬和镍含量丰富的 52 M 区域，二次裂纹的扩展受到阻碍。在类似条件下，与不含 CW 的 316 L/52M-FB 相比，含 20% CW 的 316LN/52M-FB 的 SCCGR 高出五到六倍。

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Stress corrosion cracking behavior at fusion boundary of cold worked 316LN stainless steel/Inconel 52 M weld joint in simulated primary water environment

The microstructure of the fusion boundary (FB) for cold worked (CW) 316LN stainless steel/Inconel 52 M weld joint (20 % CW 316LN/52M-FB) was investigated. The FB region was subjected to stress corrosion crack growth rate (SCCGR) test in simulated primary water of pressurized water reactor (PWR). It was noticed that stress corrosion cracking (SCC) occurred both along the FB and in the nearby 316LN region. The propagation of secondary cracks was impeded in the 52 M region rich in the Cr and Ni. Under similar conditions, the SCCGR of 20 % CW 316LN/52M-FB was five to six times higher compared with 316 L/52M-FB without CW.

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来源期刊

Corrosion Science 工程技术-材料科学：综合

CiteScore

13.60

自引率

18.10%

发文量

763

审稿时长

46 days

期刊介绍： Corrosion occurrence and its practical control encompass a vast array of scientific knowledge. Corrosion Science endeavors to serve as the conduit for the exchange of ideas, developments, and research across all facets of this field, encompassing both metallic and non-metallic corrosion. The scope of this international journal is broad and inclusive. Published papers span from highly theoretical inquiries to essentially practical applications, covering diverse areas such as high-temperature oxidation, passivity, anodic oxidation, biochemical corrosion, stress corrosion cracking, and corrosion control mechanisms and methodologies. This journal publishes original papers and critical reviews across the spectrum of pure and applied corrosion, material degradation, and surface science and engineering. It serves as a crucial link connecting metallurgists, materials scientists, and researchers investigating corrosion and degradation phenomena. Join us in advancing knowledge and understanding in the vital field of corrosion science.