Effect Of Laser Impact On The Service Life Of Heat-resistant Steel

Strengthen the heat resistant steel sample through 00 Cr 12, and then place it at 25,400,500, and 600 degrees Celsius for fatigue tensile test, and test the mechanical properties of the heat resistant steel sample when stretching at different temperatures. By comparing fatigue safety life estimation by unilateral tolerance factor method and two-dimensional weibull distribution method, we can find that the yield strength and elastic modulus of the sample after laser reinforcement are significantly improved, and increase with the increase of temperature. Temperature has a great influence on the life span of heat-resistant steel, and with the increase of temperature, the fatigue life is significantly reduced. Laser technology is the most effective way to improve the fatigue resistance of materials under room temperature in recent years.