柳洋波,崔京玉,佟倩,王立峰

• 1:首钢技术研究院

摘要(Abstract)：

通过模拟渗碳试验,研究了Nb对齿轮钢20Cr Mn Ti晶粒粗化行为的影响。结果表明,由于析出含Nb析出相,Nb能显著提高在模拟渗碳过程中的晶粒粗化温度。晶粒粗化温度由析出相的体积分数和析出相的尺寸决定。当模拟渗碳温度较低时,时间对析出相尺寸影响不明显;当渗碳温度较高时,延长时间析出相明显粗化。因此,对于Nb含量较低的试样,1 h和6 h模拟渗碳的晶粒粗化温度接近;而对于Nb含量较高的试样6 h模拟渗碳的晶粒粗化温度比1 h的低。

关键词(KeyWords)： 金属材料;20CrMnTi;晶粒粗化;铌

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 柳洋波,崔京玉,佟倩,王立峰

DOI: 10.13289/j.issn.1009-6264.2015.01.025

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