硼铁粉含量对激光熔覆AlCoCrFeNi高熵合金涂层性能及形貌的影响

doi:10.11896/cldb.20120230

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Abstract The effect of the content of ferro-boron powder on the microstructure and properties of the laser cladding AlCoCrFeNi high-entropy alloy coa-ting on the surface of 45 steel was studied in this work. AlCoCrFeNi high-entropy alloy coatings with different contents of ferro-boron powder were prepared on the surface of 45 steel substrate by laser cladding. The surface morphology, microstructure and cross-sectional morphology of the coating were compared and analyzed, and the hardness and wear resistance were measured. The results show that the addition of ferro-boron powder to the high-entropy alloy powder can significantly improve the surface quality and refine the grains in the coating. When the mass fraction of ferro-boron powder was 3%—4%, the cladding coating surface morphology was gradually improved. When the mass fraction of ferro-boron powder was 5%—6%, a small number of nodules and cracks appeared in the coating. The hardness and the wear resistance of the high-entropy alloy coating with ferro-boron powder were improved. When the addition of ferro-boron powder was 4%, AlCoCrFeNi high-entropy alloy coating with high quality was obtained which showedexcellent comprehensive performance, microhardness and wear resistance, with no obvious nodules and cracks.

Key words： ferro-boron powder laser cladding AlCoCrFeNi high-entropy alloy

Published: 25 April 2022 Online: 2022-04-27

CLC number:

TG174.445

Fund:National Natural Science Foundation of China (51371125).

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	Articles by authors
	GU Mi
	SUN Ronglu
	NIU Wei
	HAO Wenjun
	ZUO Runyan

Cite this article:

GU Mi,SUN Ronglu,NIU Wei, et al. Effect of Ferro-Boron Powder Addition on the Tissue Morphology and Properties of AlCoCrFeNi High-entropy Alloy by Laser Cladding[J]. Materials Reports, 2022, 36(8): 20120230-5.

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http://www.mater-rep.com/EN/10.11896/cldb.20120230 OR http://www.mater-rep.com/EN/Y2022/V36/I8/20120230

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