SA508Gr的氢脆行为。具有不同显微组织的钢

IF 7 2区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Science and Engineering: A Pub Date : 2025-09-27 DOI:10.1016/j.msea.2025.149193

Jiyan Liu , Yuhao Wang , Yaxin Gu , Yang Hai , Fengshan Du

{"title":"SA508Gr的氢脆行为。具有不同显微组织的钢","authors":"Jiyan Liu , Yuhao Wang , Yaxin Gu , Yang Hai , Fengshan Du","doi":"10.1016/j.msea.2025.149193","DOIUrl":null,"url":null,"abstract":"<div><div>Microstructure of SA508Gr.1 modified by intercritical heat treatment(IHT) processes and pre-strain. The double-stage IHT achieves grain refinement and generates a higher proportion of bainite. The results reveal a decrease in Hydrogen embrittlement (HE) sensitivity with increasing pre-strain. The specimens treated with double-stage IHT exhibit lower HE sensitivity compared to those treated with single-stage IHT. The effect of hydrogen on fracture morphology are verified by analyzing dislocations and grain boundaries(GBs). The combined effects arising from the interaction between hydrogen and microstructures induced by different pre-strain exert a significant influence on yield strength (YS) and dislocation density. At 0 % and 3 % pre-strain, hydrogen has been observed to promote dislocation emission, which in turn leads to a significant increase in the dislocation density within the grains, resulting in an elevated YS.</div></div>","PeriodicalId":385,"journal":{"name":"Materials Science and Engineering: A","volume":"947 ","pages":"Article 149193"},"PeriodicalIF":7.0000,"publicationDate":"2025-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Hydrogen embrittlement behaviour of SA508Gr.1 steels with different microstructures\",\"authors\":\"Jiyan Liu , Yuhao Wang , Yaxin Gu , Yang Hai , Fengshan Du\",\"doi\":\"10.1016/j.msea.2025.149193\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>Microstructure of SA508Gr.1 modified by intercritical heat treatment(IHT) processes and pre-strain. The double-stage IHT achieves grain refinement and generates a higher proportion of bainite. The results reveal a decrease in Hydrogen embrittlement (HE) sensitivity with increasing pre-strain. The specimens treated with double-stage IHT exhibit lower HE sensitivity compared to those treated with single-stage IHT. The effect of hydrogen on fracture morphology are verified by analyzing dislocations and grain boundaries(GBs). The combined effects arising from the interaction between hydrogen and microstructures induced by different pre-strain exert a significant influence on yield strength (YS) and dislocation density. At 0 % and 3 % pre-strain, hydrogen has been observed to promote dislocation emission, which in turn leads to a significant increase in the dislocation density within the grains, resulting in an elevated YS.</div></div>\",\"PeriodicalId\":385,\"journal\":{\"name\":\"Materials Science and Engineering: A\",\"volume\":\"947 \",\"pages\":\"Article 149193\"},\"PeriodicalIF\":7.0000,\"publicationDate\":\"2025-09-27\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Materials Science and Engineering: A\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0921509325014170\",\"RegionNum\":2,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"MATERIALS SCIENCE, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Materials Science and Engineering: A","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0921509325014170","RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}

引用次数: 0

摘要

SA508Gr的显微组织。经临界间热处理（IHT）工艺和预应变改性。双阶段高温热处理使晶粒细化，形成了较高比例的贝氏体。结果表明，随着预应变的增加，氢脆（HE）敏感性降低。与单期IHT治疗相比，双期IHT治疗的标本表现出较低的HE敏感性。通过位错和晶界分析，验证了氢对断口形貌的影响。氢与不同预应变诱导的微观组织相互作用所产生的综合效应对屈服强度和位错密度有显著影响。在预应变为0%和3%时，观察到氢促进位错发射，从而导致晶粒内位错密度显著增加，从而导致YS升高。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Hydrogen embrittlement behaviour of SA508Gr.1 steels with different microstructures

查看原文本刊更多论文

Hydrogen embrittlement behaviour of SA508Gr.1 steels with different microstructures

Microstructure of SA508Gr.1 modified by intercritical heat treatment(IHT) processes and pre-strain. The double-stage IHT achieves grain refinement and generates a higher proportion of bainite. The results reveal a decrease in Hydrogen embrittlement (HE) sensitivity with increasing pre-strain. The specimens treated with double-stage IHT exhibit lower HE sensitivity compared to those treated with single-stage IHT. The effect of hydrogen on fracture morphology are verified by analyzing dislocations and grain boundaries(GBs). The combined effects arising from the interaction between hydrogen and microstructures induced by different pre-strain exert a significant influence on yield strength (YS) and dislocation density. At 0 % and 3 % pre-strain, hydrogen has been observed to promote dislocation emission, which in turn leads to a significant increase in the dislocation density within the grains, resulting in an elevated YS.

求助全文

通过发布文献求助，成功后即可免费获取论文全文。去求助

来源期刊

Materials Science and Engineering: A 工程技术-材料科学：综合

CiteScore

11.50

自引率

15.60%

发文量

1811

审稿时长

31 days

期刊介绍： Materials Science and Engineering A provides an international medium for the publication of theoretical and experimental studies related to the load-bearing capacity of materials as influenced by their basic properties, processing history, microstructure and operating environment. Appropriate submissions to Materials Science and Engineering A should include scientific and/or engineering factors which affect the microstructure - strength relationships of materials and report the changes to mechanical behavior.