武光宗,王毛球,王春芳,甘国友,董瀚

• 1:昆明理工大学材料科学与工程学院
• 2:钢铁研究总院先进钢铁材料技术国家工程研究中心

摘要(Abstract)：

通过TDS方法研究了氢在18Cr2Ni4W和25CrNi2MoVNb两种低温回火马氏体钢中的扩散行为,同时结合慢应变速率拉伸实验研究了这两种马氏体钢的氢脆敏感性。结果表明,与18Cr2Ni4W钢相比,25CrNi2MoVNb钢因碳含量较高和晶粒显著细化作用使抗拉强度从1300 MPa级提高到了1500 MPa级后,其氢脆敏感性也明显增加。通过试样充氢后放置试验,测定氢在25CrNi2MoVNb钢和18Cr2Ni4WA钢中的扩散系数分别为7.87×10-7 cm2/s和3.99×10-7 cm2/s。可见,氢在25CrNi2MoVNb钢中更容易扩散,因而在充入相同可扩散氢时,25CrNi2MoVNb钢性能损失更大。

关键词(KeyWords)： 马氏体钢;氢脆;氢扩散;TDS

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 武光宗,王毛球,王春芳,甘国友,董瀚

DOI: 10.13289/j.issn.1009-6264.2012.01.025

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