Preparation of medium-entropy alloy coating using GMAW cladding with MoFe₃TiNiCu cable-type welding wire

Abstract

The Mo–Fe–Ti–Ni–Cu medium-entropy alloy (MEA) coating was prepared based on a GMAW – Robotic Integrated Cladding System with the MoFe₃TiNiCu cable-type welding wire (CWW) containing 1-Mo, 3-Fe, 1-Ti, 1-Ni and 1-Cu pure metallic wires. The produced MEA coating is composed of FCC major phase and BCC minor phase. The hardness of the produced MEA coating is between 400 HV and 450 HV, while the substrate is about 190 HV. The produced MEA coating can greatly improve the wear resistance of the substrate, and its friction coefficient is 0.4, which is far lower than that of the substrate (0.65).

KEYWORDS:

• Microstructure
• metals and alloys
• medium-entropy alloy coating
• GMAW

Disclosure statement

No potential conflict of interest was reported by the author(s).

Additional information

Funding

This project was supported by National Natural Science Foundation of China (Grant no. 52075235 and 51764038), Gansu Science and Technology Planning Project (22JR5RA314, 22YF7WA151, 22YF7GA138, 20YF8GA033, 21YF5GA048, 17YF1GA018, 17CX1JA117, and 18JR3RA132), Gansu Provincial Department of Education: Industrial Support Plan Project (Grant no. 2022CYZC-31), Employee Innovation Subsidy Fund Project of All China Federation of Trade Unions, Open Project of State Key Laboratory of Advanced Welding and Joining (AWJ-21Z02), Western Young Scholars of Chinese Academy of Sciences, Lanzhou Talent Innovation and Entrepreneurship Project (2020-RC-120, 2019-RC-102, and 2018-RC-108), Longyuan Youth Innovative and Entrepreneurial Talents Project, Foundation of A Hundred Youth Talents Training Program of Lanzhou Jiaotong University, and Gansu Provincial Employee Technology Innovation Subsidy Fund Project.