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Characterization of microstructures and mechanical properties of laser welded TWIP steel plate

文献类型：期刊论文

作者Yang, Nanle3,4; Wang, Xingfu5; Liang, Juhua3; Deng, Haoxiang1,4; Ma, Jianguo1,2; Liu, Zhihong1; Han, Fusheng3
刊名JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
出版日期2024-05-01
卷号30
关键词TWIP steel Laser welding Microstructure Mechanical properties
ISSN号2238-7854
DOI10.1016/j.jmrt.2024.05.083
通讯作者Wang, Xingfu(wangxingfu@dgut.edu.cn) ; Han, Fusheng(fshan@issp.ac.cn)
英文摘要In the present study, laser welding of medium-thick TWIP steel plates was studied and the microstructures and mechanical properties of the welded joints obtained at varied welding speeds were characterized. It is shown that a full penetration was achieved in the welded joint, which exhibits a keyhole-shaped configuration. The welded joint displays a single austenitic phase and typical solidification structure composed of cellular, columnar and dendrite grains. With increasing the welding speed, the grains in both the central fusion zone and adjacent heataffected zone were refined. The latter was attributed to inadequate recrystallization because of decreased heating time at elevated welding speed. The mechanical properties of all welded joints were lower than those of base metal, in which the decline of elongation was more serious than that of strength. This is attributed to the formation of thick columnar crystals and the Al2O3 core-shell structured nanoscale precipitates in the grains of the fusion zone. Moreover, there existed a certain degree of non-uniformity in the microstructures and mechanical properties along the thickness direction of welding seam, and the samples in the upper area of welding seam showed better comprehensive properties than the lower ones. When welded at a moderate speed as 1.0 m/min, the welding seams exhibited the best mechanical properties and the least difference across the thickness direction of the welding seam. This is because the moderate welding speed resulted in the most beneficial macro- and micro-structures as well as grain boundary characteristics.
WOS关键词INDUCED PLASTICITY STEEL ; GRAIN-SIZE ; BEHAVIOR ; SOLIDIFICATION ; PERFORMANCE ; EVOLUTION ; STRESS
资助项目Anhui Provincial Key Research and Development Program[2023z04020015] ; Anhui Provincial Key Research and Development Program[2021001] ; HFIPS Director's Fund[YZJJKX202202] ; Natural Science Foundation of Anhui Province[2108085ME142] ; Key research and development Program of Yunnan Province[202402AC080003]
WOS研究方向Materials Science ; Metallurgy & Metallurgical Engineering
语种英语
WOS记录号WOS:001243133000002
出版者ELSEVIER
资助机构Anhui Provincial Key Research and Development Program ; HFIPS Director's Fund ; Natural Science Foundation of Anhui Province ; Key research and development Program of Yunnan Province
源URL[http://ir.hfcas.ac.cn:8080/handle/334002/136251]  
专题中国科学院合肥物质科学研究院
通讯作者Wang, Xingfu; Han, Fusheng
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.Chinese Acad Sci, Inst Solid State Phys, Hefei Inst Phys Sci, Key Lab Mat Phys, Hefei 230031, Peoples R China
4.Univ Sci & Technol China, Hefei 230026, Peoples R China
5.Dongguan Univ Technol, Res Inst Interdisciplinary Sci RISE, Sch Mat Sci & Engn, Dongguan 523808, Guangdong, Peoples R China
推荐引用方式
GB/T 7714		 Yang, Nanle,Wang, Xingfu,Liang, Juhua,et al. Characterization of microstructures and mechanical properties of laser welded TWIP steel plate[J]. JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T,2024,30.
APA Yang, Nanle.,Wang, Xingfu.,Liang, Juhua.,Deng, Haoxiang.,Ma, Jianguo.,...&Han, Fusheng.(2024).Characterization of microstructures and mechanical properties of laser welded TWIP steel plate.JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T,30.
MLA Yang, Nanle,et al."Characterization of microstructures and mechanical properties of laser welded TWIP steel plate".JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T 30(2024).

入库方式： OAI收割

来源：合肥物质科学研究院

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