谌康,夏彬,徐乐,时捷,何肖飞,王毛球

• 1:钢铁研究总院特殊钢研究所
• 2:中国兵器工业标准化研究所

摘要(Abstract)：

通过SEM、TEM、XRD、化学相分析等方法对比研究新型扭杆弹簧用40Si2Ni2CrMoV钢(代号N1)和现有45CrNiMoVA钢微观组织及其力学性能,并利用升温脱氢分析(TDS)及慢应变速率拉伸(SSRT)方法对比研究两种试验钢的氢脆敏感性。结果表明,N1钢经300℃回火和45CrNiMoVA钢经180℃回火抗拉强度都在2000 MPa以上;N1钢和45CrNiMoVA钢的氢扩散系数分别为1.34×10~(-7)cm~2/s和2.07×10~(-7)cm~2/s;N1钢中氢扩散系数低于45CrNiMoVA钢,且经相同条件电化学充氢后,N1钢中充入的氢含量低于45CrNiMoVA钢,是N1钢的氢脆敏感性明显低于45CrNiMoVA钢的原因。

关键词(KeyWords)： 高强度钢;低温回火;氢脆;慢应变速率拉伸;氢扩散系数

Abstract:

Keywords:

基金项目(Foundation): 国家重点研发计划(2016YFB0300104)

作者(Author): 谌康,夏彬,徐乐,时捷,何肖飞,王毛球

DOI: 10.13289/j.issn.1009-6264.2017-0117

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