Effect of laser surface treatment on wear resistance of 100Cr6 steel

Abstract EN

The effect of laser surface heat treatment on wear resistance of 100Cr6 steel was investigated.

In this work, 100Cr6 steel which is widely used in many industrial of automobiles hardened by using Nd : glass laser (= 1.060m,  = 300 s).

Three different laser energies have been used to perform hardening (0.3, 0.58 and 0.93 Joule).

A pin-on-disc technique has been used to evaluate wear rate of the specimens as-received and specimens treated by Nd : glass laser at different applied loads and different sliding speeds with 420 r.

p.

m and 45 HRC of rotating disc.

The results show that the wear rate increases with increasing applied load and decreases with increasing sliding speed, wear rate for laser energy 0.93 J less than another energies 0.3 and 0.5 J.

Also the microhardness decreases with increasing in depth of hardening, and the microhardness for laser energy 0.93 J more than another energies for the same depth.