Enhanced Hydrogen Embrittlement Resistance via Cr Segregation in Nanocrystalline Fe–Cr Alloys

IF 2.9 2区材料科学 Q2 METALLURGY & METALLURGICAL ENGINEERING

Acta Metallurgica Sinica-English Letters Pub Date : 2023-09-19 DOI:10.1007/s40195-023-01603-x

Linshuo Dong, Feiyang Wang, Hong-Hui Wu, Mengjie Gao, Penghui Bai, Shuize Wang, Guilin Wu, Junheng Gao, Xiaoye Zhou, Xinping Mao

{"title":"Enhanced Hydrogen Embrittlement Resistance via Cr Segregation in Nanocrystalline Fe–Cr Alloys","authors":"Linshuo Dong, Feiyang Wang, Hong-Hui Wu, Mengjie Gao, Penghui Bai, Shuize Wang, Guilin Wu, Junheng Gao, Xiaoye Zhou, Xinping Mao","doi":"10.1007/s40195-023-01603-x","DOIUrl":null,"url":null,"abstract":"<div><p>Hydrogen is a clean fuel with numerous sources, yet the hydrogen industry is plagued by hydrogen embrittlement (HE) issues during the storage, transportation, and usage of hydrogen gas. HE can compromise material performance during service, leading to significant safety hazards and economic losses. In the current work, the influence of element Cr on the HE resistance of nanocrystalline Fe–Cr alloys under different hydrogen concentrations and strain rates was evaluated. With hybrid Monte Carlo (MC) and molecular dynamics (MD) simulations, it was found that Cr atoms were segregated at grain boundaries (GB) and inhibited the GB decohesion. Correspondingly, Cr segregation improved the strength and plasticity of the nanocrystalline Fe–Cr alloys, especially the HE resistance. Moreover, the Cr segregation reduced the diffusion coefficient of hydrogen and inhibited hydrogen-induced cracking. This work provided new insight into the development of iron-based alloys with high HE resistance in the future.</p></div>","PeriodicalId":457,"journal":{"name":"Acta Metallurgica Sinica-English Letters","volume":null,"pages":null},"PeriodicalIF":2.9000,"publicationDate":"2023-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Acta Metallurgica Sinica-English Letters","FirstCategoryId":"1087","ListUrlMain":"https://link.springer.com/article/10.1007/s40195-023-01603-x","RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"METALLURGY & METALLURGICAL ENGINEERING","Score":null,"Total":0}

引用次数: 0

Abstract

Hydrogen is a clean fuel with numerous sources, yet the hydrogen industry is plagued by hydrogen embrittlement (HE) issues during the storage, transportation, and usage of hydrogen gas. HE can compromise material performance during service, leading to significant safety hazards and economic losses. In the current work, the influence of element Cr on the HE resistance of nanocrystalline Fe–Cr alloys under different hydrogen concentrations and strain rates was evaluated. With hybrid Monte Carlo (MC) and molecular dynamics (MD) simulations, it was found that Cr atoms were segregated at grain boundaries (GB) and inhibited the GB decohesion. Correspondingly, Cr segregation improved the strength and plasticity of the nanocrystalline Fe–Cr alloys, especially the HE resistance. Moreover, the Cr segregation reduced the diffusion coefficient of hydrogen and inhibited hydrogen-induced cracking. This work provided new insight into the development of iron-based alloys with high HE resistance in the future.

Abstract Image

查看原文本刊更多论文

纳米晶Fe-Cr合金中Cr偏析增强抗氢脆性能

氢是一种清洁燃料，来源众多，但氢工业在氢气的储存、运输和使用过程中受到氢脆(HE)问题的困扰。在使用过程中，HE会损害材料性能，导致重大的安全隐患和经济损失。本文研究了不同氢浓度和应变速率下，Cr元素对Fe-Cr纳米晶合金抗HE性能的影响。通过混合蒙特卡罗(MC)和分子动力学(MD)模拟，发现铬原子在晶界处发生分离，抑制了晶界的脱黏。相应的，Cr偏析提高了纳米晶Fe-Cr合金的强度和塑性，尤其是抗HE性能。Cr的偏析降低了氢的扩散系数，抑制了氢致开裂。这项工作为今后高HE电阻铁基合金的发展提供了新的思路。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Acta Metallurgica Sinica-English Letters METALLURGY & METALLURGICAL ENGINEERING-

CiteScore

6.60

自引率

14.30%

发文量

122

审稿时长

2 months

期刊介绍： This international journal presents compact reports of significant, original and timely research reflecting progress in metallurgy, materials science and engineering, including materials physics, physical metallurgy, and process metallurgy.