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Effect of heat input on the microstructure and mechanical properties of the simulated coarse-grained heat-affected zone (CGHAZ) of novel twining-induced plasticity(TWIP) steel

文献类型：期刊论文

作者Deng, Haoxiang4,5; Liu, Zhihong3,4; Wang, Xingfu1; Ma, Jianguo2,3,4; Han, Fusheng1; Wang, Zhiyong4,5
刊名MATERIALS TODAY COMMUNICATIONS
出版日期2022-12-01
卷号33
关键词Welding thermal simulation TWIP steel CGHAZ Mechanical properties Precipitate
DOI10.1016/j.mtcomm.2022.104407
通讯作者Liu, Zhihong(zhliu@ipp.ac.cn) ; Ma, Jianguo(mjg@ipp.ac.cn)
英文摘要The study of strengthening mechanisms associated with the HAZ is of significant interest for improving the mechanical properties. In this study, the effect of different heat inputs (6.21, 13.89, 19.64, 27.78, and 36.75 KJ.cm(-1)) on the microstructure, carbide precipitation, and mechanical properties of CGHAZ in a novel FeCMnSi TWIP steel was explored by using welding thermal simulations. The results showed that the CGHAZ organization did not experience phase transformation after different welding thermal cycles. As the heat input increased, and the grain size was 95.87, 107.03, 109.65, 98.68, and 136.95 mu m, respectively. The factor of grain size variation with heat input is the dissolution of AlN particles and the generation of carbides at grain boundaries. The dramatic deterioration of CGHAZ toughness at a heat input of 27.78 KJ.cm(-1) is mainly attributed to the enrichment of carbon and silicon elements at the grain boundaries in the CGHAZ, which leads to cracks along the grain boundaries. At this time, the fracture mode of CGHAZ shifts from ductility to intergranular brittleness. It is proposed that fine grain strengthening is the main factors in improving strength, and carbide precipitation is responsible for the significant decrease in toughness in the novel FeCMnSi TWIP steel. It provides an effective guide for the application of FeCMnSi TWIP steels.
WOS关键词STACKING-FAULT ENERGY ; TEMPERATURE ; WELD ; P91 ; TOUGHNESS ; BEHAVIOR ; STRAIN
资助项目Anhui Provincial Key Research and Development Programme ; Youth Innovation Promotion Association of CAS ; Natural Science Foundation of Anhui Province ; [202104a05020042] ; [2019433] ; [2108085ME142]
WOS研究方向Materials Science
语种英语
出版者ELSEVIER
WOS记录号WOS:000875711600001
资助机构Anhui Provincial Key Research and Development Programme ; Youth Innovation Promotion Association of CAS ; Natural Science Foundation of Anhui Province
源URL[http://ir.hfcas.ac.cn:8080/handle/334002/129913]  
专题中国科学院合肥物质科学研究院
通讯作者Liu, Zhihong; Ma, Jianguo
作者单位1.Chinese Acad Sci, Inst Solid State Phys, Hefei Inst Phys Sci, Key Lab Mat Phys, Hefei 230031, Peoples R China
2.Inst Energy, Hefei Comprehens Natl Sci Ctr, Hefei 230051, Peoples R China
3.Anhui Prov Key Lab Special Welding Technol, Huainan 232063, Peoples R China
4.Chinese Acad Sci, Inst Plasma Phys, Hefei Inst Phys Sci, Hefei 230031, Peoples R China
5.Univ Sci & Technol China, Hefei 230026, Peoples R China
推荐引用方式
GB/T 7714		 Deng, Haoxiang,Liu, Zhihong,Wang, Xingfu,et al. Effect of heat input on the microstructure and mechanical properties of the simulated coarse-grained heat-affected zone (CGHAZ) of novel twining-induced plasticity(TWIP) steel[J]. MATERIALS TODAY COMMUNICATIONS,2022,33.
APA Deng, Haoxiang,Liu, Zhihong,Wang, Xingfu,Ma, Jianguo,Han, Fusheng,&Wang, Zhiyong.(2022).Effect of heat input on the microstructure and mechanical properties of the simulated coarse-grained heat-affected zone (CGHAZ) of novel twining-induced plasticity(TWIP) steel.MATERIALS TODAY COMMUNICATIONS,33.
MLA Deng, Haoxiang,et al."Effect of heat input on the microstructure and mechanical properties of the simulated coarse-grained heat-affected zone (CGHAZ) of novel twining-induced plasticity(TWIP) steel".MATERIALS TODAY COMMUNICATIONS 33(2022).

入库方式： OAI收割

来源：合肥物质科学研究院

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