Research on the thermo-physical process of laser bending

This paper presents a new method of real-time measuring technology to reveal the thermo-physical process of laser bending. The dynamic micro-deformation of the specimen is measured using a laser beam reflex amplifier system. Experimental results show that the common action of thermal stress and phase transformation stress makes the specimen bend. The final deformation direction of the specimen depends on the result of the co-operation of the thermal strain and the phase transformation strain, away from the laser beam or towards the laser beam. The conclusion lays the foundation for further research on the process of laser bending.