Microstructure and mechanical properties of submerged arc welding filled with Ni wire dissimilar joints comprising SUS304 and Q245R

doi:10.4028/www.scientific.net/AMR.936.1780

CORC > 兰州理工大学 > 兰州理工大学

	Microstructure and mechanical properties of submerged arc welding filled with Ni wire dissimilar joints comprising SUS304 and Q245R
	Zhang, Peng Xian; Zhao, Peng; Cui, Yan Quan
	2014
会议日期	June 28, 2014 - June 29, 2014
会议地点	Shanghai, China
关键词	Cracks Engineering technology Filling Mechanical properties Microstructure Nickel Submerged arc welding Welding Welds Elevated temperature Influence mechanism Micro-structure evolutions Microstructure and mechanical properties Ni wires Peak temperatures Quantitative parameters Transition widths
卷号	936
DOI	10.4028/www.scientific.net/AMR.936.1780
页码	1780-1785
英文摘要	Aim at the issue that the bending crack is easy to generate inside dissimilar welded joint of low alloy steel and stainless steel, a new process of submerged arc welding filled with Ni wire is put forward. The influence mechanism of filling quantity of Ni wire to the joint of microstructure evolutions and mechanical properties is mainly explored based on the contrast test of non-filling Ni wire and three different filling speeds of Ni wire. The experiment results indicate that, the filling process of Ni wire supplies austenite forming element, and alters heat allocation process of molten pool. The filling quantity of Ni wire is the quantitative parameter, it is used to control the transition width between low alloy steel and weld metal, also to adjust the peak temperature and holding time at elevated temperature of molten pool. When the value of the filling quantity of Ni wire is determined, the problem of bending crack in the fusion zone of low alloy steel can be solved, and also the overheat damage can be eliminated. At the same time, the grains of weld metal and heat affected zone are refined. And on this basis the plasticity, toughness and microhardness of welded joint can be guaranteed. © (2014) Trans Tech Publications, Switzerland.
会议录	Advanced Materials Research
会议录出版者	Trans Tech Publications Ltd
语种	英语
ISSN号	10226680
内容类型	会议论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/117286]
专题	兰州理工大学
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	Zhang, Peng Xian,Zhao, Peng,Cui, Yan Quan. Microstructure and mechanical properties of submerged arc welding filled with Ni wire dissimilar joints comprising SUS304 and Q245R[C]. 见:. Shanghai, China. June 28, 2014 - June 29, 2014.