College of Materials Science and Engineering;
Taiyuan University of Technology;
Taiyuan;
030024;
China;
Steel Institute;
RWTH Aachen University;
Aachen;
52072;
Germany;
Key Laboratory of Interface Science and Engineering in Advanced Materials;
Ministry of Education;
Taiyuan University of Technology;
Taiyuan;
030024;
China;
Plasma nitriding; High-entropy alloy; Microstructure; Hardness; Wear and tribology;