Surface layers characteristics of three different steel alloys hardened by ND : yag laser

Abstract EN

Laser surface treatment is an effective way to improve the characteristics of surface layers for the most alloys.

In the present work, three different steel alloys: low carbon steel A3115, medium carbon steel 1045 and high carbon steel 52100 were hardened by Nd: YAG laser at 1.064nm wave length with 1000mj energy.

An experiments with Nd: YAG laser were carried out to study the effect of laser hardening process on the microstructure, roughness, microhardness during laser hardening of the three alloys.

All of surface layers characteristics were analyses using optical microscope.

Laser surface treatment enhanced the characteristics of surface layers for all the alloys.

Also Nd: YAG laser surface treatment produced plate martensite for 52100 alloy more than A3115 and 1045 alloys.

From the results is obtained finer martensite, an excellentroughness and larger microhardness for this alloy.

The aim of present investigation study the effect of Nd: YAG laser hardening on the characteristics of surface layers for three different steel alloys (A3115, 1045, 52100) .