Microstructures and Wear Resistance of Al1.5CrFeNiTi0.5 and Al1.5CrFeNiTi0.5W0.5 High Entropy Alloy Coatings Manufactured by Laser Cladding

Hui Liang; Bing Yang Gao; Ya Ning Li; Qiu Xin Nie; Zhi Qiang Cao

doi:10.4028/www.scientific.net/MSF.956.154

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Microstructures and Wear Resistance of Al_1.5CrFeNiTi_0.5and Al_1.5CrFeNiTi_0.5W_0.5 High Entropy Alloy Coatings Manufactured by Laser Cladding
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HomeMaterials Science ForumMaterials Science Forum Vol. 956Microstructures and Wear Resistance of...

Microstructures and Wear Resistance of Al_1.5CrFeNiTi_0.5and Al_1.5CrFeNiTi_0.5W_0.5 High Entropy Alloy Coatings Manufactured by Laser Cladding

Abstract:

For the purpose of expanding the application scope of HEA coating manufactured on the surface modification of materials, in this work, the Al_1.5CrFeNiTi_0.5 and Al_1.5CrFeNiTi_0.5W_0.5 HEA coatings were successfully manufactured using laser cladding method on SUS304. The microstructures and wear resistance of coatings are researched systematically. It is found that the W0 and W0.5 HEA coatings all exhibit the dendritic structure, which are constituted by BCC phases and Laves phases. With W element addition, the phase structures of W0.5 coating remain unchanged. W is dissolved in both two phases, but the solid solubility in Laves phase is higher compared to that in BCC phase. W0.5 coating with the highest microhardness of 848.34 HV, and the W0 coating with the microhardness of 811.45 HV, both of whose microhardness are four times more than that of SUS304 substrate. Among all samples, the W0.5 coating shows the optimal wear performance because of its larger content of hard second phase ( Laves phase).

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Materials Science Forum (Volume 956)

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154-159

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.956.154

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Online since:

June 2019

Authors:

Hui Liang, Bing Yang Gao, Ya Ning Li, Qiu Xin Nie, Zhi Qiang Cao*

Keywords:

High Entropy Alloy Coating, Laser Cladding, Microhardness, Microstructure, Wear Resistance

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