激光熔覆层裂纹的产生和抑制方法

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Abstract As a common defect in laser cladding,the cracks are seriously hindered the development and application of laser cladding. The stress causes the cracks by the different thermal expansion coefficient between the cladding layer and the substrate material after laser cladding, the element segregation in the cladding layer. It is including constraint stress, thermal stress and structural stress. In order to reduce the incidence rate of crack, it is proposed to add ceramic powder or rare earth elements into the powder, improving the parameters such as laser power and cladding speed, heat treatment of the material, and apply electromagnetic auxiliary field conditions. Analyzing the future development and research direction of crack control in cladding layer.

Key words： laser cladding crack stress improved method

Published: 16 July 2021

CLC number:

TG174.4

Fund:National Natural Science Foundation of China (52074128).

About author:: Suoxia Hou is the associate professor, graduate supervisor in North China University of Science and Techno-logy. She majors in surface engineering materials, the friction wear and lubrication. In the past five years, she has been a number of projects supported by the National Natural Science Foundation of China, the Provincial Natural Science Foundation of China and the Provincial Science and Technology Support Program. She has published more than 30 papers in domestic and foreign journals, including 8 SCI indexed papers, 2 monographs, and 5 invention patents.Haoqiang Zhang received his MA. Eng degree from the University of Hebei University of Polytechnic in 2005,in 2010 he received his Ph. D degree from Beijing Institute of Technology. Now he is the associate professor, graduate supervisor in North China University of Science and Technology; Deputy Director of Tangshan Nonferrous Castings Self-Lubrication Engineering Technology Research Center. In recent years, he has undertaken more than 10 scientific research projects. He has won three Tangshan Science and Technology Progress Awards, including one first prize and two third prizes, and publish more than 30 academic papers, including 5 SCI papers.

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	Articles by authors
	HOU Suoxia
	REN Chengxiang
	WU Chao
	ZHAO Jiangkun
	ZHANG Duo
	ZHANG Haoqiang

Cite this article:

HOU Suoxia,REN Chengxiang,WU Chao, et al. A Review of Crack Generation and Suppression in Laser Cladding Layer[J]. Materials Reports, 2021, 35(Z1): 352-356.

URL:

http://www.mater-rep.com/EN/ OR http://www.mater-rep.com/EN/Y2021/V35/IZ1/352

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