电子束重熔对铁基粉末冶金表面耐磨性能的影响

doi:10.11896/cldb.20100136

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Abstract The surface of the iron-based powder metallurgy sample is remelted by electron beam in order to improve its hardness and wear resistance. Results show that the structure of the iron-based powder metallurgy sample has gradually transformed under the remelting treatment by electron beam, from austenite + pearlite to acicular martensite + residual austenite. With the current 8 mA, there still exists a amount of austenite since the structure has not been completely melted. When the current increases to 9 mA, the structure has completely transformed to martensite and residual austenite. As the current continues to increase, the content of residual austenite in the structure gradually decreases. The electron beam remelting treatment can effectively reduce the porosity of iron-based powder metallurgy samples and promote the martensite transformation, thereby improving the surface wear resistance and reducing the wear rate, and the wear resistance of the sample surface gradually improves with the increase of the current.

Key words： electron beam remelting powder metallurgy wear resistance hardness

Published: 10 September 2022 Online: 2022-09-10

CLC number:

TG141

Fund:financially supported by National Natural Science Foundation of China (51975286) and Postgraduate Research & Practice Innovation Program of Jiangsu Province (KYCX18_0272).

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	Articles by authors
	YANG Haiyi
	ZHANG Shasha
	YAO Zhengjun
	LIU Zili

Cite this article:

YANG Haiyi,ZHANG Shasha,YAO Zhengjun, et al. Effect of Electron Beam Remelting on the Wear Resistance of Iron-based Powder Metallurgy Surface[J]. Materials Reports, 2022, 36(17): 20100136-5.

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http://www.mater-rep.com/EN/10.11896/cldb.20100136 OR http://www.mater-rep.com/EN/Y2022/V36/I17/20100136

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