赵晓丽,张永健,黄海涛,惠卫军,董瀚

• 1:钢铁研究总院
• 2:北京交通大学机械与电子控制工程学院
• 3:北京精密机电控制设备研究所
• 4:上海大学材料科学与工程学院

摘要(Abstract)：

对不同退火时间处理的冷轧0.1C-5Mn中锰钢进行了不同温度回火处理,利用电化学充氢和慢应变速率拉伸实验(SSRT)研究其氢脆敏感性。结果表明:退火时间从10 min提高到360 min时,实验钢的氢脆敏感性显著增加;随着回火温度的升高,实验钢的氢脆敏感性降低,其中以10 min退火样500℃回火时降低的幅度最为显著;SSRT断口分析表明,实验钢未充氢样的断裂机制为典型的韧窝韧性断裂,而充氢后的氢致起裂区断裂机制为空心韧窝及包含奥氏体(变形后转变为马氏体)晶粒的实心韧窝的混合断裂模式,这种实心韧窝实质上是一种脆性沿晶断裂,因此尽可能抑制或减少这种实心韧窝是降低实验钢氢脆敏感性的一个关键。

关键词(KeyWords)： 冷轧中锰钢;回火;氢脆敏感性;两相区退火;奥氏体稳定性

Abstract:

Keywords:

基金项目(Foundation): 北京交通大学人才基金(M14RC00010)

作者(Author): 赵晓丽,张永健,黄海涛,惠卫军,董瀚

DOI: 10.13289/j.issn.1009-6264.2018-0131

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