Effects of shielding gas flow on microstructure of PAW welded joints of pure Nickel N6

	Effects of shielding gas flow on microstructure of PAW welded joints of pure Nickel N6
	Wang, Xijing; Zhao, Qingshan; Chai, Tingxi; Jing, Wenxia
刊名	Hanjie Xuebao/Transactions of the China Welding Institution
	2016-10-25
卷号	37 期号:10 页码:29-32
关键词	Electric welding Flow of gases Laser beam welding Microstructure Nickel Plasma welding Shielding Surface defects Textures Cerebral cortex Inner walls Metallic luster Plasma arc welding (PAW) Pure nickels Shielding gas Weld appearances Weld microstructures
ISSN号	0253360X
英文摘要	The effect of shielding gas flow (SGF) on weld microstructure was investigated in the plasma arc welding (PAW) of pure N6 Ni without filler wire. The results show that weld appearance has an obvious metallic luster and no surface defects with the increase of the SGF. The HAZ width on the back side of weld seam increases with the SGF rate being increased, and reaches gradually up to that on the front of weld seam. The grains size increase from the base metal to the center of weld. The grain size in HAZ has no few variations with the increase of the SGF, while the grains in the weld center become gradually coarser. Meanwhile, a large number of pores appear when the shielding gas is not enough. From analysis of SEM and EDS results, there are a large number of oxides with Ni, C, N, and Mg as main components in the inner wall of the porosities in weld, and oxygen-riched impurities groups have a texture of cerebral cortex like. © 2016, 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/112500]
专题	材料科学与工程学院
作者单位	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	Wang, Xijing,Zhao, Qingshan,Chai, Tingxi,et al. Effects of shielding gas flow on microstructure of PAW welded joints of pure Nickel N6[J]. Hanjie Xuebao/Transactions of the China Welding Institution,2016,37(10):29-32.
APA	Wang, Xijing,Zhao, Qingshan,Chai, Tingxi,&Jing, Wenxia.(2016).Effects of shielding gas flow on microstructure of PAW welded joints of pure Nickel N6.Hanjie Xuebao/Transactions of the China Welding Institution,37(10),29-32.
MLA	Wang, Xijing,et al."Effects of shielding gas flow on microstructure of PAW welded joints of pure Nickel N6".Hanjie Xuebao/Transactions of the China Welding Institution 37.10(2016):29-32.