Abstract No.:	4836
Title:	Microstructure and mechanical properties of AlCoCrFeNiTi high-entropy alloy coatings sprayed-remelted by plasma process
Authors:	Lihui Tian / Jiangsu University of Science and Technology, China Wei Xiong* / Jiangsu University of Science and Technology, China Chuan Liu/ Jiangsu University of Science and Technology, China
Abstract:	As a novel material, high-entropy alloy (HEA) exhibits superior properties such as good wear resistance, excellent thermostability, etc. In this study, AlCoCrFeNiTi feedstock powders were prepared by mechanical alloying. AlCoCrFeNiTi coatings were deposited on 316 stainless steel by atmospheric plasma spraying and the as-sprayed coatings were remelted by plasma jet. X-ray diffraction and scanning electron microscopy were used to analyze the microstructure of the ball-milled powder, the as-sprayed coatings and the remelted coatings. The microhardness of the coatings at room temperature was measured. The wear resistance of the coatings at room temperature, 300oC, 500oC, 700oC and 900oC was tested. Results show that the porosity of the coatings decreased significantly after remelting. However, no phase transformation occurred after the remelting process, and both the as-sprayed and the remelted coatings exhibited typical FCC solid solution phase.

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