Study on the Properties of Electron Beam Welded Joints of High Carbon Chromium Stainless Steel
DAI Yibo1,2, LUO Bingbing1,*, FANG Weiping1, YI Yaoyong1, HU Yongjun2, YI Peng1,2
1 Guangdong Provincial Key Laboratory of Advanced Welding Technology, China-Ukraine Institute of Welding, Guangdong Academy of Sciences, Guangzhou 510650, China 2 School of Materials and Energy, Guangdong University of Technology, Guangzhou 510006, China
Abstract: In view of the problem of poor performance of welded joints of high carbon chromium stainless steel, electron beam welding technology was used to weld high carbon chromium stainless steel with a thickness of 5 mm in a quenched and tempered state. The microstructure and pro-perties of the joints were analyzed by optical microscope (OM), X-ray diffractometer (XRD), scanning electron microscope (SEM), transmission electron microscope (TEM) and tensile testing machine. The results show that under the conditions of accelerating voltage of 150 kV, beam intensity of 17 mA, and welding speed of 850 mm/min, joints with good formation and no defects such as pores and cracks can be obtained. Carbon and alloying elements exist in the weld in the form of solid solution, the fusion zone is martensite and residual austenite, showing a non-equilibrium solidification structure, and the carbide particles in the welding heat-affected zone are partially dissolved. The hardness distribution of the welded joint presents a typical ‘M’ type, and the hardness of the welded heat-affected zone is the highest, which can reach 750HV; the tensile strength of the welded joint is 699 MPa, and brittle fracture occurs in the welded heat-affected zone, and the plastic deformation capacity of the joint decreases sharply.
代一博, 罗兵兵, 房卫萍, 易耀勇, 胡永俊, 易朋. 高碳铬不锈钢电子束焊接头性能研究[J]. 材料导报, 2023, 37(17): 22040270-5.
DAI Yibo, LUO Bingbing, FANG Weiping, YI Yaoyong, HU Yongjun, YI Peng. Study on the Properties of Electron Beam Welded Joints of High Carbon Chromium Stainless Steel. Materials Reports, 2023, 37(17): 22040270-5.
1 Zhang C L, Zhu Y C, Jiang B. Materials Reports, 2023, 37(6), 21090266 (in Chinese). 张朝磊, 朱禹承, 蒋波. 材料导报, 2023, 37(6), 21090266. 2 Pan L, Kwok C T, Lo K H. Journal of Materials Processing Technology, 2020, 277, 1. 3 Shen W J, Nan B, Wang W L, et al. Journal of Alloys and Compounds, 2018, 738, 363. 4 Köse C, Kaçar R. Materials and Design, 2014, 64, 221. 5 Srivatsa K, Srinivas P, Balachandran G, et al. Materials Science & Engineering A, 2016, 677, 240. 6 Shao R N, He T T, Liu J, et al. Materials Reports, 2021, 35(20), 20062 (in Chinese). 邵若男, 贺甜甜, 刘建, 等. 材料导报, 2021, 35(20), 20062. 7 Zhao Y G, Liu W, Fan Y M, et al. Materials Characterization, 2021, 175, 111066. 8 Li S H, Yuan X H, Jiang W, et al. Materials Science & Engineering A, 2014, 605, 229. 9 Villaret F, Boulnat X, Aubry P, et al. Materials Science & Engineering A, 2021, 824, 141794. 10 Yang S B, Wang Y, Shen D, et al. Materials Reports, 2014, 28(17), 60 (in Chinese). 杨绍斌, 王阳, 沈丁, 等. 材料导报, 2014, 28(17), 60. 11 He Z G, Zou Y, Xing L, et al. Welding & Joining, 2019(4), 29 (in Chinese). 何志高, 邹旸, 邢丽, 等. 焊接, 2019(4), 29. 12 Dinda S K, Sk M B, Roy G G, et al. Materials Science & Engineering A, 2016, 677, 182. 13 Zhang Z Y, Wang S L, Ke L M, et al. Rare Metal Materials and Engineering, 2018, 47(7), 2246 (in Chinese). 张子阳, 王善林, 柯黎明, 等. 稀有金属材料与工程, 2018, 47(7), 2246. 14 Jalaja K, Manwatkar S K, Anand P, et al. Engineering Failure Analysis, 2021, 124, 105376. 15 Yi P. Numerical simulation and experimental study on weld morphology of electron beam welding of high carbon and high chromium stainless steel. Master’s Thesis, Guangdong University of Technology, China, 2021 (in Chinese). 易朋. 高碳高铬不锈钢电子束焊接焊缝形状数值模拟与试验研究. 硕士学位论文, 广东工业大学, 2021. 16 Peng H L, Hu B, Li B J, et al. Materials Science and Engineering A, 2020, 772, 138803.