Numerical analysis of heat conduction and phase transformation in laser transformation hardening: influences of heating duration and laser beam intensity

Abstract

A two-dimension numerical model for pulsed Laser Transformation Hardening (LTH) is developed using the Finite Differences Method (FDM). In this model, the starting temperature of martensite formation is taken into account as a crucial factor in martensite formation. The numerical results are compared to analytical solution and numerical solution of the previous study [2], showing a good agreement. Two experiments are carried out varying two input variables namely, heating duration and laser beam intensity, to investigate their impact on the temperature distribution and martensitic transformation. The results of these experiments will be explained more detail in this paper.