FV520B钢激光焊接工艺参数优化及组织性能

doi:10.11896/cldb.20030138

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Abstract The laser welding parameters of FV520B steel plate were optimized by orthogonal tests in order to provide a foundation for the impeller bac-king weld. The welding parameter was initially selected by the range analysis method. A narrow parameter range of laser welding was determined by taking the weld penetration as response. The optimized weld parameters were determined as spot diameter of 1.2 mm, power of 4.2 kW, and welding speed of 35 mm/s. Under these parameters, the microstructure in fusion zone (FZ) of the butt self-fusion weld was composed of the white martensite, the black δ ferrite and a small amount of carbides. The delta ferrite exhibits worm-shape and lath shape. The linear energy density of laser has a great influence on the weld penetration. The weld penetration increases with increasing linear energy density according to an approximate power function relation, while the Vickers hardness decreases slightly with increasing linear energy density. The hardness of the FZ in butt weld under the optimized parameters is slightly lower than that of the base metal (BM), and also the softening occurs in heat affected zone (HAZ) significantly. Due to the existence of weld defects, the yield strength and ultimate tensile strength of the weld are lower than those of the BM. However, the weld without or with a few of surface weld defects presents a higher strength than BM.

Key words： laser welding orthogonal test weld penetration linear energy density

Published: 10 May 2021

CLC number:

TG456.7

Fund:Foundation of Collaborative Innovation Center of Major Machine Manufacturing in Liaoning (DUT2017031), Collaborative Innovation Center of High-end Control Valve Industry Technology (2018WZ003).

About author:: Dewei Deng, Ph.D., associate professor in School of Materials Science and Engineering, Dalian University of Technology, master supervisor, joined the R&D Division of Shenyang Blower Works Group Corporation in 2006. His research interests are focused in remanufacturing of mechanical equipment, surface engineering, and metal 3D printing et al.

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	DENG Dewei
	LYU Jie
	MA Yushan
	ZHANG Yong
	HUANG Zhiye

Cite this article:

DENG Dewei,LYU Jie,MA Yushan, et al. Processing Parameters Optimization, Microstructures and Properties of Laser Welded FV520B Steel[J]. Materials Reports, 2021, 35(8): 8127-8133.

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http://www.mater-rep.com/EN/10.11896/cldb.20030138 OR http://www.mater-rep.com/EN/Y2021/V35/I8/8127

1 Katayama S, Kawahito Y, Mizutani M. Physics Procedia,2010,5,9.
2 Qiao G Y, Xiao F R, Tan C X. Special Steel,1998(6),18(in Chinese).
乔桂英,肖福仁,谭朝鑫.特殊钢,1998(6),18.
3 Tan C X. Journal of Huazhong University of Science and Technology,1983(S1),125(in Chinese).
谭朝鑫.华中工学院学报,1983(S1),125.
4 Wang Z M, Li H, Shen Q, et al. Acta Materialia,2018,156,158.
5 Fan J L, Guo X L, Wu C W, et al. Transactions of Materials and Heat Treatment,2012,33(7),76(in Chinese).
樊俊铃,郭杏林,吴承伟,等.材料热处理学报,2012,33(7),76.
6 Niu J, Dong J M, Xue J, et al. Transactions of the China Welding Institution,2006(12),101(in Chinese).
牛靖,董俊明,薛锦,等.焊接学报,2006(12),101.
7 Liu Z W, Li J F. Journal of Jilin University(Engineering and Technology Edition),2018,48(3),835(in Chinese).
刘子武,李剑峰.吉林大学学报(工学版),2018,48(3),835.
8 Xu B S, Fang J X, Dong S Y, et al. Acta Metallurgica Sinica,2016,52(1),1(in Chinese).
徐滨士,方金祥,董世运,等.金属学报,2016,52(1),1.
9 He W, Xue W D, Tang B, et al. Optimizing experimental design methods and data analysis, Chemical Industry Press, China,2012(in Chinese).
何为,薛卫东,唐斌,等.优化试验设计方法及数据分析,化学工业出版社,2012.
10 Wen P, Wu R F, Wang X Y, et al. China Mechanical Engineering,2017,28(11),1355(in Chinese).
温鹏,邬瑞峰,王秀义,等.中国机械工程,2017,28(11),1355.
11 Welding Association of Chinese Mechanical Engineering Society. Welding handbook (Third edition), China Machine Press, China,2008(in Chinese).
中国机械工程学会焊接学会.焊接手册(第三版),机械工业出版社,2008.
12 Hao K D, Zhang C, Zeng X Y, et al. Journal of Materials Processing Technology,2017,245,7.
13 Luo K Y, Xu X, Zhao Z, et al. Journal of Materials Processing Technology,2019,263,50.
14 Kou S. Welding metallurgy, John Wiley & Sons, Inc.,2002,pp.216.
15 Fang J X. Evolution and control of stress during laser cladding forming of martensitic stainless steel. Ph.D. Thesis, Harbin Institute of Technology, China,2016(in Chinese).
方金祥.激光熔覆成形马氏体不锈钢应力演化及调控机制.博士学位论文,哈尔滨工业大学,2016.