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| 热处理对25CrNi2MoVNb钢氢脆敏感性的影响 | |
| 引用本文： | 刘孝红,王毛球,时捷,惠卫军,董瀚,徐存英.热处理对25CrNi2MoVNb钢氢脆敏感性的影响[J].金属热处理,2009,34(12). |
| 作者姓名： | 刘孝红 王毛球 时捷 惠卫军 董瀚 徐存英 |
| 作者单位： | 1. 昆明理工大学,材料与冶金工程学院,云南,昆明,650093;钢铁研究总院,先进钢铁材料技术国家工程研究中心,北京,100081 2. 钢铁研究总院,先进钢铁材料技术国家工程研究中心,北京,100081 3. 昆明理工大学,材料与冶金工程学院,云南,昆明,650093 |
| 摘 要： | 通过慢应变速率拉伸试验研究了奥氏体化温度对25CrNi2MoVNb钢的氢脆敏感性的影响.奥氏体化温度从880 ℃升高到1200 ℃,25CrNi2MoVNb钢的原奥氏体晶粒尺寸从6 μm长大到204 μm.随奥氏体化温度升高,奥氏体晶粒长大会导致氢脆敏感性增加,但同时屈服强度下降会导致氢脆敏感性降低.在本试验条件下,奥氏体化温度为1100 ℃时,25CrNi2MoVNb 钢的原奥氏体晶粒尺寸为57 μm,氢脆敏感性最低. |
| 关 键 词： | 马氏体钢 氢脆 晶粒尺寸 慢速拉伸试验 |
Effect of heat treatment on hydrogen embrittlement sensibility of 25CrNi2MoVNb steel |
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| LIU Xiao-hong,WANG Mao-qiu,SHI Jie,HUI Wei-jun,DONG Han,XU Cun-ying.Effect of heat treatment on hydrogen embrittlement sensibility of 25CrNi2MoVNb steel[J].Heat Treatment of Metals,2009,34(12). | |
| Authors: | LIU Xiao-hong WANG Mao-qiu SHI Jie HUI Wei-jun DONG Han XU Cun-ying |
| Abstract: | Effect of austenitizing temperature on hydrogen embrittlement sensibility of 25CrNi2MoVNb steel was investigated by means of slow strain rate test on notch tensile specimens.With the increase of austenitizing temperature from 880 to 1200 ℃,the prior austenite grain size of the 25CrNi2MoVNb steel was increased from 6 to 204 μm.The grain coarsening resulting from the increase of austenitizing temperature can cause an increase in hydrogen embrittlement sensibility,meanwhile the decrease in the yield strength would decrease hydrogen embrittlement sensibility.Thus,in the present experimental condition,the hydrogen embrittlement sensibility of 25CrNi2MoVNb steel was lowest when it was austenitized at 1100 ℃ with the average prior austenite grain size of 57 μm. |
| Keywords: | martensitic steel hydrogen embrittlement grain size slow strain rate test |
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