基于响应面法的镍基高温合金GH4169电弧增材工艺优化

doi:10.11896/cldb.23060136

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Abstract In this work, the CMT-P composite arc additive manufacturing nickel base alloy GH4169 was studied. The process parameters such as wire feeding speed, welding speed and pulse number were considered comprehensively, and the forming quality such as distortion and forming accuracy was taken as the evaluation index. The process parameters were optimized by using the central composite response surface method. The regression model of distortion and forming accuracy was established, and the monomer and interaction effects of process parameters on forming quality were analyzed. The results show that the most significant factor affecting the amount of distortion is the wire feed speed, followed by the number of pulses, and the welding speed has the least influence. The influence of pulse number on forming accuracy is obviously greater than that of wire feeding speed and welding speed, and the interaction between wire feeding speed and pulse number is significant. Based on the comprehensive optimization objective, the optimal parameter combination is obtained: wire feed speed 3.5 m/min, welding speed 5.8 mm/s, pulse number 30. The relative errors of distortion amount and forming precision are 10.3% and 4%, respectively, which shows that the model is correct.

Key words： arc additive manufacturing CMT-P GH4169 response surface method process optimization

Published: 10 October 2024 Online: 2024-10-23

CLC number:	TG444
	V252.2

Fund:Natural Science Foundation of Tianjin(22JCYBJC01280), Key Project of Natural Science Fund for Universities(3122023039), National Natural Science Foundation of China(51905536), Aeronautical Science Foundation of China (2020Z049067002).

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	Articles by authors
	GUO Zhiyong
	LI Meng
	ZHANG Zhiqiang
	LU Xuecheng
	ZHANG Tiangang
	CAO Yiran

Cite this article:

GUO Zhiyong,LI Meng,ZHANG Zhiqiang, et al. Optimization of Arc Additive Process for Nickel-based Superalloy GH4169 Based on Response Surface Methodology[J]. Materials Reports, 2024, 38(19): 23060136-7.

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http://www.mater-rep.com/EN/10.11896/cldb.23060136 OR http://www.mater-rep.com/EN/Y2024/V38/I19/23060136

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