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

doi:10.1016/j.mtcomm.2022.104407

	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
	Deng, Haoxiang 1,5; Liu, Zhihong 1,2; Wang, Xingfu 4; Ma, Jianguo 1,2,3; Han, Fusheng 4; Wang, Zhiyong 1,5
刊名	MATERIALS TODAY COMMUNICATIONS
	2022-12-01
卷号	33
关键词	Welding thermal simulation TWIP steel CGHAZ Mechanical properties Precipitate
DOI	10.1016/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.
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关键词	STACKING-FAULT ENERGY ; TEMPERATURE ; WELD ; P91 ; TOUGHNESS ; BEHAVIOR ; STRAIN
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
内容类型	期刊论文
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 Plasma Phys, Hefei Inst Phys Sci, Hefei 230031, Peoples R China 2.Anhui Prov Key Lab Special Welding Technol, Huainan 232063, Peoples R China 3.Inst Energy, Hefei Comprehens Natl Sci Ctr, Hefei 230051, Peoples R China 4.Chinese Acad Sci, Inst Solid State Phys, Hefei Inst Phys Sci, Key Lab Mat Phys, 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).