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４０Ｃｒ钢试样经不同热处理后在空气中用ＣＯ２连续激光束进行辐照，以穆斯堡尔谱学研究试样在激光辐照后的组织结构变化。试验结果表明，调质预处理后再进行激光辐照的试样，不仅残余奥氏体含量较低，而且其中碳的含量最低。
40Cr steel samples after different heat treatment in the air with CO2 continuous laser beam irradiation to Mossbauer spectroscopy samples after laser irradiation changes in the organizational structure. The experimental results show that the samples irradiated by laser after quenching and pretreatment have not only low retained austenite content but also the lowest content of carbon.