PREP法制备球形CuAl10Fe3铜合金粉末的性能表征

doi:10.11896/cldb.18080057

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Abstract CuAl10Fe3 spherical copper alloy powders were prepared directly from the master electrode by the plasma rotating electrode processing (PREP). Then, the Laser particle size analyzer, O-N apparatus, scanning electron microscope (SEM) X-ray diffractometer (XRD) and nano-indentation tester were employed to characterize the particle size distribution, content of oxygen and nitrogen, micromorphology, phase composition and nano-hardness and modulus of the CuAl10Fe3 powders. It could be found from the results that the CuAl10Fe3 powders held an average particle size (D50) of 74 μm, the loose density of 4.45 g/cm³, the tap density of 4.6 g/cm³, the flowability of 16.3 s/50 g. The mean content of oxygen and nitrogen were 0.024% and 0.004%, respectively. The decrease of CuAl10Fe3 particle size would give rise to the increase of oxygen concentration and exert no obvious effect on nitrogen content. XRD patterns of the obtained CuAl10Fe3 showed that the powders were primarily composed of α phase, martensite β′phase, and a small amount iron rich K phase. As for the micromorphology of the CuAl10Fe3, powders with large particle size exhibits isometric petal-shaped cellular dendrite resulted from rapid solidification. The decrease of particle size forced the surface morphology of cell dendrites transform into planar crystals, the morphology of the cross section elements vary from the cellular crystal to the fine stripe crystal. Moreover, CuAl10Fe3, powders with small particle size presented a greatly refined cross section structure, as well as improved nano-hardness and modulus.

Key words： sphercial copper alloy powders plasma rotating electrode process (PREP) rapid solidification nano-indentation

Published: 16 September 2019

CLC number:

TG174.442

Fund:This work was financially supported by the Natural Key R & D Program of China (2018YFB1105800).

About author:: Ke Huang, born in 1991, graduate student, research direction is metal additive manufacturing.
Yang Zhao, born in 1983, doctor of engineering, assistant researcher, research direction is additive manufacturing and surface strength of the copper alloy.

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	HUANG Ke
	ZHAO Yang
	ZHANG Changsong
	WANG Xiaoming
	CHANG Qing
	QIU Liu
	GUAN Xuefei

Cite this article:

HUANG Ke,ZHAO Yang,ZHANG Changsong, et al. Properties Characterization of Spherical CuAl10Fe3 Copper Alloy Powders Prepared by Plasma Rotating Electrode Processing[J]. Materials Reports, 2019, 33(22): 3783-3788.

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http://www.mater-rep.com/EN/10.11896/cldb.18080057 OR http://www.mater-rep.com/EN/Y2019/V33/I22/3783

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