Microstructural modification in a laser-treated 2.25Cr-1Mo steel

摘要

A systematic study was carried out to understand the various microstructural changes in the heat-affected zone due to laser treatment on 2.25Cr-iMo steel. The observed microstructures pertain to different cooling rates at different depths from the surface. A good correlation of the microstructures with the corresponding time-temperature-transformation (TTT) diagram of the steel was observed.