Novel laser rapidly solidified medium-entropy high speed steel coatings with enhanced hot wear resistance
Artikel i vetenskaplig tidskrift, 2019

The microstructure and hot wear resistance of a laser cladded novel medium-entropy high speed steel (ME-HSS) coating, by increasing the content of alloying elements Mo, V, Co, Ni and Al in a commercialized W6Mo5Cr4V2 (M2) HSS, are studied here. The results show that the newly designed ME-HSS coating has less amount of undesired retained austenite, and enhanced secondary hardening effect with more nano-size M2C carbide precipitates after tempering, in comparison with the M2 coating. In particular, the tempered ME-HSS coating exhibits excellent oxidative wear resistance at 500 °C because of the high content of anti-oxidation elements like Co, Ni and Al, leading to the formation of a more continuous and compact oxidation film on its worn surface.

Hot wear resistance

Medium entropy alloy

High speed steel

Laser cladding

Författare

Hao Tang

Anhui University of Technology

H. Zhang

Chinese Academy of Sciences

Anhui University of Technology

Liang Chen

Anhui University of Technology

Sheng Guo

Chalmers, Industri- och materialvetenskap, Material och tillverkning

Journal of Alloys and Compounds

0925-8388 (ISSN)

Vol. 772 719-727

Ämneskategorier

Bearbetnings-, yt- och fogningsteknik

Metallurgi och metalliska material

Korrosionsteknik

DOI

10.1016/j.jallcom.2018.09.122

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Senast uppdaterat

2018-09-30