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激光冲击45钢的表面硬度提高了大约32％，硬化层深度约为100μm，在离表层大约30～40μm处硬度达到最大，平均疲劳寿命提高了60％左右，在置信度为95％时，激光冲击强化试件的中值疲劳寿命是未冲击试件的1.11～2.133倍。
Laser impact The surface hardness of 45 steel increased by about 32%, the depth of the hardened layer was about 100μm, the hardness reached the maximum at about 30-40μm from the surface and the average fatigue life increased by about 60%. When the confidence was 95% The median fatigue life of the impact-enhanced specimen is 1.11 to 2.133 times that of the non-impact specimen.