粉末活化烧结制备高性能铁基合金

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Abstract Mixing the mechanical milled pre-alloy with atomized iron and carbonyl iron, respectively, Fe-3Mo- 3Cr-1.2V-0.5Mn-2C alloy was prepared by vacuum sintering. The microstructure and mechanical properties of the as-prepared samples by mechanically activated pre-alloy and carbonyl iron were studied. The results show that mechanically activated milling can effectively improve the diffusion of pre-alloy in atomized iron and densification of iron based powder metallurgy materials. With the highly surface-activated carbonyl iron powder as raw material, higher density and mechanical properties can be obtained in low sintering temperature. The iron-based powder metallurgy sample sintered at 1 120 ℃ has low porosity and medium grain size. The density, brinell hardness and bending strength are 7.68 g/cm³, 538 and 1 222 MPa, respectively.

Key words： mechanical milling iron-based powder metallurgy materials activated sintering mechanical properties

Received: 06 July 2015 Published: 22 March 2021

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	Articles by authors
	CAO Guangyu
	LIU Rutie
	DANG Shengyun
	XIONG Xiang
	CHEN Jie
	LIAO Ning

Cite this article:

CAO Guangyu,LIU Rutie,DANG Shengyun, et al. High performance iron-based alloy fabricated by activated powder sintering[J]. Materials Science and Engineering of Powder Metallurgy, 2021, 26(1): 63-69.

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http://pmbjb.csu.edu.cn/EN/ OR http://pmbjb.csu.edu.cn/EN/Y2021/V26/I1/63

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