Influence of homogenized annealing on the intergranular corrosion behavior of super ferritic stainless steel S44660

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

Corrosion Science Pub Date : 2025-02-14 DOI:10.1016/j.corsci.2025.112783

Bin Wang , Yugui Li , Huaying Li , Guanghui Zhao , Yaohui Song , Hui Xu

引用次数: 0

Abstract

This study investigated the impact of homogenization annealing temperature and time on the intergranular corrosion (IGC) behavior of super ferritic stainless steel (SFSS) S44660. The results revealed the high susceptibility of IGC in S44660 was due to an intergranular chromium-depleted zone resulting from the precipitation of M₂₃C₆ along grain boundaries. Furthermore, IGC resistance was restored after treatment under three homogenized annealing conditions: 750 °C for 5 min, 780 °C for 2 min, and 800 °C for 30 s. This restoration was attributed to intragranular chromium atoms diffusing into the chromium-depleted zone during homogenization annealing, compensating for chromium loss from carbide precipitation. It has been confirmed that the self-healing of IGC in S44660 occurs through the process of controlling chromium diffusion by homogenizing annealing.

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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.