Subscribe to our newsletter to receive the latest news and events from TWI:

Subscribe >
Skip to content

Laser Transformation Hardening Of A Medium Carbon Steel: Part I - Defocused Beam Trials - Industrial Member Report 204/1983


TWI Industrial Member Report Summary 204/1983

By P J Oakley


A series of transformation hardening trials have been carried out on a medium carbon steel using a defocused beam from a 2kW fast axial flow laser. The effect of laser power, beam diameter, traverse speed, beam absorption coating and focusing configuration were assessed. Tests were also made to examine the reproducibility of hardening. Although the trends in the morphology of the hardened regions were predictable, a variation in the microstructure of these regions was observed that could not be related to the laser processing parameters. The effect of different beam absorption coating thicknesses is postulated as the cause of this variation in microstructure.

For more information please email: