Highly efficient TIG welding of Cr13Ni5Mo martensitic stainless steel

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	Highly efficient TIG welding of Cr13Ni5Mo martensitic stainless steel
	S. P. Lu; M. P. Qin; W. C. Dong
	2013
发表期刊	Journal of Materials Processing Technology
ISSN	0924-0136
卷号	213 期号:2 页码:229-237
摘要	A double-shielded TIG welding process using pure He gas as the inner shielding layer and He and CO2 mixed gas as the outer shielding layer was proposed for the welding of Cr13Ni5Mo martensitic stainless steels. This proposed welding process can successfully address the problem of electrode oxidation with mixed-gas TIG welding and the issue of low weld depth and welding efficiency of traditional TIG welding. A change in the direction of the surface tension convection mode was the primary mechanism that affected the fusion zone profile. When the oxygen content in the weld pool was in the range of 80-120 ppm, the surface tension convection direction changed from outward to inward, resulting in both a larger weld depth and a larger weld depth/width ratio. This process not only allows for a high welding efficiency comparing with traditional TIG welding but also produces better weld impact properties than those of MAG welding (metal active gas welding). (C) 2012 Elsevier B.V. All rights reserved.
部门归属	[lu, s. p. ; qin, m. p. ; dong, w. c.] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china. ; lu, sp (reprint author), chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china. ; shplu@imr.ac.cn
关键词	Martensitic Stainless Steel Tig Welding Oxygen Content Surface Tension Convection Fusion Zone Profile Shape Variations Marangoni Convection Shielding Gas
URL	查看原文
语种	英语
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/71390
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	S. P. Lu,M. P. Qin,W. C. Dong. Highly efficient TIG welding of Cr13Ni5Mo martensitic stainless steel[J]. Journal of Materials Processing Technology,2013,213(2):229-237.
APA	S. P. Lu,M. P. Qin,&W. C. Dong.(2013).Highly efficient TIG welding of Cr13Ni5Mo martensitic stainless steel.Journal of Materials Processing Technology,213(2),229-237.
MLA	S. P. Lu,et al."Highly efficient TIG welding of Cr13Ni5Mo martensitic stainless steel".Journal of Materials Processing Technology 213.2(2013):229-237.