Secondary hardening in laser rapidly solidified Fe-68(MoWCrVCoNiAlCu)(32) medium-entropy high-speed steel coatings
Journal article, 2018

Novel Fe-68(MoWCrVCoNiAlCu)(32) (at.%) medium-entropy high-speed steel (ME-HSS) coatings, containing various carbon contents from 0.65 to 1.05 wt%, are prepared by laser rapid solidification. The newly prepared ME-HSS coatings are characterized by a hard martensitic matrix enhanced by secondary hardening, and specifically by coherent nano-sized M2C. The secondary hardening effect is enhanced with the increasing carbon content. The high amount of alloying elements in ME-HSS coatings results in excellent oxidative wear resistance, without leading to serious compositional segregation and coarsening of carbides.

Medium-entropy alloy

Secondary hardening

Martensite

High speed steel

Coating

Author

Hui Zhang

Anhui University of Technology

Chinese Academy of Sciences

Bang Dou

Anhui University of Technology

Hao Tang

Anhui University of Technology

Yizhu He

Anhui University of Technology

Sheng Guo

Chalmers, Industrial and Materials Science, Materials and manufacture

Materials and Design

0264-1275 (ISSN)

Vol. 159 224-231

Subject Categories

Manufacturing, Surface and Joining Technology

Metallurgy and Metallic Materials

Corrosion Engineering

DOI

10.1016/j.matdes.2018.08.050

More information

Latest update

12/10/2018