应用元胞自动机模型对合金钢表面氮化及扩散层中氮化物沉淀过程进行了计算机模拟.考察了过程的动力学和沉淀相尺寸与分布特征,以及氮势和稳定氮化物形成元素含量对它们的影响.结果表明氮化过程动力学为抛物线型,抛物线速率常数k随氮势提高呈线性增大;氮化物形成元素含量XM对氮化速率也有影响,k～XM基本呈线性正比关系;表面渗氮层内的稳定氮化物沉淀相颗粒尺寸与体积分数则随氮势的降低而增大.
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