镍基高温合金激光修复工艺研究

doi:10.11896/cldb.18040076

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Abstract In order to realize the full laser repair of Inconel718 superalloy cracks, the short pulse laser was used to clean and etch the cracks, and the high-power continuous laser was used to repair the cracks. The influence of parameters such as laser power, scanning speed, and defocus amount on repair morphology, microstructure, phase composition and mechanical property was studied. The results show that a defect-free repair specimen can be obtained by controlling the process parameters (laser power, scanning speed, defocusing amount), and the Inconel718 Ni-based superalloy powder and Inconel718 matrix can be bonded metallurgically without new phase formation, the microhardness of the repair zone is 87%—88% of the matrix, and the tensile strength is 89% of the matrix.

Key words： laser cladding Ni-based super alloy defect control microstructure

Published: 15 August 2019

CLC number:	TG44
	TG43
	TG174.44

About author:: Zifa Xu, master’s degree, entered the mechanical engineering major of Ningbo University in 2016, mainly engaged in research on laser manufacturing technology.Junke Jiao, Ph.D., senior engineer, master tutor, member of the 11th committee of China Mechanical Engineering Special Processing Branch, member of American Laser Society, senior member of China Mechanical Engineering Society, member of Chinese Academy of Sciences Youth Innovation Promotion Association, lea-ding city of Ningbo with top talent.

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	XU Zifa
	JIAO Junke
	ZHANG Zheng
	YANG Yapeng
	ZHANG Wenwu

Cite this article:

XU Zifa,JIAO Junke,ZHANG Zheng, et al. Research on Laser Repair Process of Ni-based Superalloy[J]. Materials Reports, 2019, 33(19): 3196-3202.

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http://www.mater-rep.com/EN/10.11896/cldb.18040076 OR http://www.mater-rep.com/EN/Y2019/V33/I19/3196

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