Relationship between thermal process and microstructure during additive manufacturing of double-electrode gas metal arc welding

doi:10.12073/j.hjxb.2019400200

	Relationship between thermal process and microstructure during additive manufacturing of double-electrode gas metal arc welding
	Yu, Shurong 1,2; Cheng, Nengdi 1; Huang, Jiankang 2; Yu, Xiaoquan 2; Fan, Ding 2
刊名	Hanjie Xuebao/Transactions of the China Welding Institution
	2019-08-25
卷号	40 期号:8 页码:1-6
关键词	3D printers Additives Dendrites (metallography) Gas welding Microhardness Microstructure Plasma welding Welding electrodes Additive manufacture Dendrite arm spacing Micro-plasma arc welding Micro-plasmas Microstructure and properties Microstructure observation Thermal cycle curve Thermal process
ISSN号	0253360X
DOI	10.12073/j.hjxb.2019400200
英文摘要	Wire arc additive manufacture of ER304L stainless steel was studied using double electrode micro-plasma arc welding. The effect of different bypass current and stacking sequence on the microstructure and properties of 304 stainless steel stacking samples were analyzed by microstructure observation and microhardness test. Combining with the thermal cycle curve measured in the process of additive manufacturing. The results show that when the bypass current is increased, the dendrite arm spacing of the stacking sample decreased firstly and then increased during additive manufacturing of double electrode micro-plasma arc welding. Meanwhile, the effect of stacking sequence on microstructure was that the different direction of heat dissipation leaded to the change of dendrite growth direction. The microhardness decreased slowly along the direction of stack height. And with the increase of the bypass current, the hardness increases firstly and then decreases. The stacking order had no obvious effect on the hardness. © 2019, Editorial Board of Transactions of the China Welding Institution, Magazine Agency Welding. All right reserved.
语种	中文
出版者	Harbin Research Institute of Welding
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/113828]
专题	材料科学与工程学院
作者单位	1.School of Mechanical and Electrical Engineering, Lanzhou University of Technology, Lanzhou; 730050, China; 2.State Key Laboratory of advanced processing and recycling of Non-Ferrous Metals, Lanzhou University of Technology, Lanzhou; 730050, China
推荐引用方式 GB/T 7714	Yu, Shurong,Cheng, Nengdi,Huang, Jiankang,et al. Relationship between thermal process and microstructure during additive manufacturing of double-electrode gas metal arc welding[J]. Hanjie Xuebao/Transactions of the China Welding Institution,2019,40(8):1-6.
APA	Yu, Shurong,Cheng, Nengdi,Huang, Jiankang,Yu, Xiaoquan,&Fan, Ding.(2019).Relationship between thermal process and microstructure during additive manufacturing of double-electrode gas metal arc welding.Hanjie Xuebao/Transactions of the China Welding Institution,40(8),1-6.
MLA	Yu, Shurong,et al."Relationship between thermal process and microstructure during additive manufacturing of double-electrode gas metal arc welding".Hanjie Xuebao/Transactions of the China Welding Institution 40.8(2019):1-6.