淬火钢和隔热钢的氢致开裂机理分析

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

Corrosion Science Pub Date : 2024-10-15 DOI:10.1016/j.corsci.2024.112516

Weiguo Li , Weijie Wu , Juanping Xu , Yao Zhou , Jinxu Li

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引用次数: 0

摘要

淬火和隔热（Q&P）钢因其卓越的强度和延展性而广泛应用于汽车行业。然而，氢脆（HE）的影响对 Q&P 钢的安全使用构成了巨大挑战，这凸显了研究氢致开裂机制的必要性。本研究通过实验和有限元模拟研究了 Q&P 钢的氢致失效机理，重点关注微观结构、局部应力异质性、氢分布特征和氢致开裂。结果表明，Q&P 钢的氢致开裂成核主要是由于氢在局部高应力马氏体/奥氏体区域的进一步积累。

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Analysis of hydrogen-induced cracking mechanism in quenching and partitioning steels

Quenching and partitioning (Q&P) steels are extensively used in the automotive industry due to their exceptional strength and ductility. However, the impact of hydrogen embrittlement (HE) poses a huge challenge to the safe service of Q&P steels, highlighting the necessity to investigate the hydrogen-induced cracking mechanisms. This study investigates the hydrogen-induced failure mechanisms in Q&P steels through experiments and finite element simulations, focusing on microstructure, local stress heterogeneity, hydrogen distribution characteristics, and hydrogen-induced cracking. The results reveal that hydrogen cracking nucleation in Q&P steel is primarily due to the further accumulation of hydrogen in local high-stress martensitic/austenitic regions.

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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.