添加Fe-Ni粉对Fe-4Ni-0.4C低合金钢组织与性能的影响

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Abstract Add Fe-20Ni pre-alloyed powder to replace part of Ni powder as Ni source to prepare powder metallurgy Fe-4Ni-0.4C low-alloy steel. Measure the density, hardness and tensile strength of low-alloy steel, observe and analyze the microstructure and structure of the material through optical microscope (OM), X-ray energy spectrum analysis (EDS) and scanning electron microscope (SEM). The effects of adding nanocrystalline Fe-20Ni pre-alloyed powders on the structure and properties of low-alloy steel were also studied. The results show that the addition of Fe-20Ni pre-alloyed powders can make the alloy structure evenly distributed, and reduce the enrichment of Ni. When the addition amount of Fe-20Ni pre-alloyed powders (mass fraction, the same below) is 10%, and the pressing pressure is 800 MPa, the overall mechanical properties of the alloy are the best. Compared with the material without Fe-20Ni pre-alloyed powders, the tensile strength is increased by 14.9 MPa.

Key words： powder metallurgy Fe-20Ni pre-alloyed powders Fe-Ni-C mechanical properties microstructure

Received: 10 March 2021 Published: 10 November 2021

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TF125.12

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	Articles by authors
	WANG Xinyue
	LI Songlin
	LIU Xiangyang
	YU Yongliang
	YUAN Yong
	ZHENG Risheng

Cite this article:

WANG Xinyue,LI Songlin,LIU Xiangyang, et al. Effect of adding the Fe-Ni powder on the structure and properties of Fe-4Ni-0.4 C low-alloy steel[J]. Materials Science and Engineering of Powder Metallurgy, 2021, 26(5): 428-435.

URL:

http://pmbjb.csu.edu.cn/EN/ OR http://pmbjb.csu.edu.cn/EN/Y2021/V26/I5/428

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