丁一,杨兴宽,彭明霞,申灏,石伟

• 1:清华大学机械工程系
• 2:中国铁道科学研究院金属及化学研究所

摘要(Abstract)：

在氨气气氛中对42CrMo试样在510、540和560℃下离子渗氮1、3、5和7 h,并进行微观组织观察、复合层厚度测定、相成分表征和氮浓度分布测定。采用改进Wagner模型实现了对复合层氮浓度与层厚的数值模拟,考虑了(ε+γ')混合相的存在,所建模型对高渗氮量情况的模拟精度较高,复合层厚度的模拟值与实验值的相对误差小于13.6%。实现了对于扩散区α相部分的氮浓度分布模拟,计算结果与实验结果的相对误差小于19%。

关键词(KeyWords)： 渗氮;离子表面处理;42CrMo钢;数值模拟

Abstract:

Keywords:

基金项目(Foundation): 国家国际科技合作专项项目(2014DFG72020)

作者(Author): 丁一,杨兴宽,彭明霞,申灏,石伟

DOI: 10.13289/j.issn.1009-6264.2017-0313

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