将冷压３０％与未变形的３８ＣｒＭｏＡｌＡ钢试样在不同温度下进行不同时间的气体渗氮。利用扫描电镜对试样进行波谱分析，由碳浓度曲线精确确定了渗氮层深。利用公式，计算了未变形与３０％变形度试样氮的扩散激活能。最后，借助电镜对试验结果进行了初步探讨。 Gas-nitriding was performed at different temperatures for 30% of cold-pressed and undeformed 38CrMoAlA steel samples at different times. The sample was analyzed by scanning electron microscopy, and the depth of nitrided layer was precisely determined by the carbon concentration curve. Using the formula, the diffusion activation energy of nitrogen with no deformation and 30% deformation was calculated. Finally, with the help of electron microscope, the experimental results were discussed.