Heterostructure mediated high strength and ductility in stir zone of friction stir mechanical alloying Q&P 1180 steel joint

IF 6.1 2区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Science and Engineering: A Pub Date : 2025-02-21 DOI:10.1016/j.msea.2025.148100

Ke Qiao , Jia Wang , Xu Guo , Jingchang Yao , Feng Gao , Liqiang Wang , Qi Yang , Wen Wang , Kuaishe Wang

{"title":"Heterostructure mediated high strength and ductility in stir zone of friction stir mechanical alloying Q&P 1180 steel joint","authors":"Ke Qiao , Jia Wang , Xu Guo , Jingchang Yao , Feng Gao , Liqiang Wang , Qi Yang , Wen Wang , Kuaishe Wang","doi":"10.1016/j.msea.2025.148100","DOIUrl":null,"url":null,"abstract":"<div><div>The joints of transformation-induced plasticity assisted advanced high strength steel (TRIP-assisted AHSS) processed by traditional fusion weld techniques faced problems such as low retained austenite content and poor strength and ductility. In this study, a novel approach that friction stir mechanical alloying (FSMA) was successfully employed to weld Q&P 1180 steel. The results showed that heterogeneous structure including martensite, retained austenite, cementite, and nano-carbon particles was formed in stir zone (SZ) of Q&P steel FSMA joint, and the content of retained austenite was enhanced to 14.1 %. The strength-ductility product of the SZ was increased to 40 GPa%, reaching 121 % of that of base material. This was attributed to the increase of transformation-induced plasticity effect, dislocations across martensite/austenite interface capacity and plastic deformation ability of martensite during tensile test. This provides a novel and high-quality welding strategy for TRIP-assisted AHSS.</div></div>","PeriodicalId":385,"journal":{"name":"Materials Science and Engineering: A","volume":"929 ","pages":"Article 148100"},"PeriodicalIF":6.1000,"publicationDate":"2025-02-21","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/S0921509325003181","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

Abstract

The joints of transformation-induced plasticity assisted advanced high strength steel (TRIP-assisted AHSS) processed by traditional fusion weld techniques faced problems such as low retained austenite content and poor strength and ductility. In this study, a novel approach that friction stir mechanical alloying (FSMA) was successfully employed to weld Q&P 1180 steel. The results showed that heterogeneous structure including martensite, retained austenite, cementite, and nano-carbon particles was formed in stir zone (SZ) of Q&P steel FSMA joint, and the content of retained austenite was enhanced to 14.1 %. The strength-ductility product of the SZ was increased to 40 GPa%, reaching 121 % of that of base material. This was attributed to the increase of transformation-induced plasticity effect, dislocations across martensite/austenite interface capacity and plastic deformation ability of martensite during tensile test. This provides a novel and high-quality welding strategy for TRIP-assisted AHSS.

查看原文本刊更多论文

求助全文

约1分钟内获得全文求助全文

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.