Effect of laser cladding power on quality and microstructure of FeCoCrNiAl0.3Mo0.1 alloy coating

doi:10.13251/j.issn.0254-6051.2024.10.040

Abstract

Abstract: FeCoCrNiAl_0.3Mo_0.1 alloy coating was prepared on the surface of 304 stainless steel, and the effect of laser power (800, 1000, 1200 W) on the coating quality and microstructure was studied. The results show that the coating prepared at 800 W and 1000 W laser power has cracks and stoma defects, and no obvious defect is found at 1200 W. The coating structure at different laser powers is columnar, but after comparative analysis, the microstructure of the coating at 1200 W is finer and more uniform. The composition analysis of the coating finds that the Fe content is much higher than the nominal value, but the Al content is far lower than the nominal value. From bottom to top, the average content of Fe and Cr gradually decreases, and the content of other elements gradually increases. It is also found that the content of Mo and Cr in intergranular is higher than that in intragranular.

Key words: laser power, FeCoCrNiAl_0.3Mo_0.1 alloy coating, quality, microstructure

CLC Number:

TG174.4

Zhao Yongtao, Hu Yuqing, Hu Shuai, Wu Yinhu, Yang Zehua, Wang Rui. Effect of laser cladding power on quality and microstructure of FeCoCrNiAl_0.3Mo_0.1 alloy coating[J]. Heat Treatment of Metals, 2024, 49(10): 246-250.

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Effect of laser cladding power on quality and microstructure of FeCoCrNiAl_0.3Mo_0.1 alloy coating

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