超声冲击辅助熔化极电弧增材制造316L不锈钢的组织和性能研究

doi:10.11896/cldb.20120270

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Abstract The forming test of 316L stainless steel thin wall part was carried out with ultrasonic impact assisting gas metal arc additive manufacture (GMA-AM), and the influence of ultrasonic impact assist on the microstructure and properties of the part was comparatively studied. The results show that the microstructure of the wall part is composed of austenite and ferrite. After adding the ultrasonic vibration treatment in the additive manufacture process, the microstructure of the part is refined with the average grain size is 57.1% less than the grain of the un-impacted part; the content of ferrite is increased from 2.4% in the un-impacted part to 6.7% in the ultrasonic vibration treatment part. The hardness and tensile properties of the thin wall parts are improved, and the hardness of the sample is (182±8.9)HV which is 5.2% higher than that of the un-impacted parts. The tensile strength and elongation in the horizontal direction are (595±14.4) MPa and (44±6.8)%, respectively, and that in the vertical direction are (604±20.7) MPa and (36±3.4)%.

Key words： wire arc additive manufacture ultrasonic vibration treatment 316L stainless steel microstructure mechanical property

Published: 13 January 2022 Online: 2022-01-13

CLC number:

TG441.7

Fund:This work was financially supported by the National Natural Science Foundation Youth Fund of China (51805266), China Postdoctoral Science Foundation (2020M682930).

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	Articles by authors
	YANG Dongqing
	WANG Xiaowei
	PENG Yong
	ZHOU Qi
	WANG Kehong

Cite this article:

YANG Dongqing,WANG Xiaowei,PENG Yong, et al. Microstructure and Properties of 316L Stainless Steel Fabricated by Gas Mental Arc Additive Manufacturing with Ultrasonic Vibration Treatment[J]. Materials Reports, 2022, 36(1): 20120270-4.

URL:

http://www.mater-rep.com/EN/10.11896/cldb.20120270 OR http://www.mater-rep.com/EN/Y2022/V36/I1/20120270

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