焊接熔池中元素分布规律及其影响因素的研究进展<sup>*</sup>

doi:10.11896/j.issn.1005-023X.2017.011.011

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Abstract The fluid flow and heat transfer in welding process has a great influence on the shape of welding pool, the absorption and accumulation of gas and inclusions, especially on the distribution of elements in the molten pool. Sufficient researches have showed that the fluid in the molten pool is mainly affected by surface tension, force and electromagnetic force, in which the effect of the surface tension is the key factor on the welding pool shape. The welding heat input and the welding speed also have different effects on the formation of the welding pool. The element interdiffusion phenomenon occurs at the interface between different materials. The diffusion coefficient is obviously distinct for diverse elements at different diffusion depth, but it is similar for the same elements. The uniform distribution of the elements has a significant influence on the quality of the welding joint. In the future, the research will focus on the specific diffusion form and the segregation of elements in the molten pool.

Key words： welding element distribution welding pool flow diffusion

Published: 10 June 2017 Online: 2018-05-04

CLC number:

TB31

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	Articles by authors
	GAO Qian
	BAI Fang
	DING Hongsheng
	TONG Lige
	GAO Ting
	BAI Shiwu
	YU Jiangfeng

Cite this article:

GAO Qian,BAI Fang,DING Hongsheng, et al. Influencing Factors of Element Distribution in Welding Pool: A Review[J]. Materials Reports, 2017, 31(11): 80-85.

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https://www.mater-rep.com/EN/10.11896/j.issn.1005-023X.2017.011.011 OR https://www.mater-rep.com/EN/Y2017/V31/I11/80

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