Corrosion resistance enhancement for 6Mo austenitic stainless steel through B alloying coupled with a simple pre-aging method

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

Corrosion Science Pub Date : 2024-09-26 DOI:10.1016/j.corsci.2024.112481

Jinyao Ma , Shucai Zhang , Huabing Li , Huanyu Tan , Hao Feng , Puli Wang , Yi Zhang , Peide Han , Zhihua Wang

引用次数: 0

Abstract

The effect of boron (B) addition coupled with 500 ℃ pre-aging on the corrosion resistance of S31254 was systematically investigated. The results suggested that the diffusion of Mo to grain boundaries (GBs) played a crucial role in enhancing intergranular corrosion resistance. Additionally, the addition of B further promoted the uniform distribution of Mo during the pre-aging process by suppressing Mo segregation at GB. Ultimate, the B microalloying coupled with the pre-aging strategy optimized the composition of passive film through promoting the formation of Mo-rich passivation film, which significantly enhanced the corrosion resistance of Mo-containing stainless steel.

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通过 B 合金和简单的预时效方法提高 6Mo 奥氏体不锈钢的耐腐蚀性能

系统研究了添加硼（B）和 500 ℃ 预时效对 S31254 耐腐蚀性的影响。结果表明，钼向晶界（GBs）的扩散对提高晶间耐腐蚀性起着至关重要的作用。此外，在预时效过程中，硼的加入抑制了钼在晶界的偏析，从而进一步促进了钼的均匀分布。最终，硼微合金化与预时效策略相结合，通过促进富钼钝化膜的形成优化了钝化膜的组成，从而显著增强了含钼不锈钢的耐腐蚀性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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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.