氢对42CrMoVNb钢超高周疲劳性能的影响

周超 张永健 惠卫军 王磊

钢铁研究学报 ›› 2013, Vol. 25 ›› Issue (12) : 52-57.

钢铁研究学报 ›› 2013, Vol. 25 ›› Issue (12) : 52-57.
材料研究

氢对42CrMoVNb钢超高周疲劳性能的影响

  • 周超1,2,张永健1,惠卫军1,王磊2
作者信息 +

Effect of Hydrogen on Fatigue Properties of High Strength Steel 42CrMoVNb

  • ZHOU Chao1,2,ZHANG Yong-jian1,HUI Wei-jun1,WANG Lei2
Author information +
文章历史 +

摘要

采用阴极充氢、氢热分析及超声波疲劳等试验方法,研究了高强钢42CrMoVNb在不同回火温度、不同氢水平下的超高周疲劳性能。结果表明:与500℃回火试样相比,600℃回火试样内新析出了大量尺寸在18nm以下且与基体保持共格关系的(V,X)C析出物,而利用(V,X)C等析出相的氢陷阱作用可影响试样内的氢分布及扩散行为,显著改善了氢对高强度钢超高周疲劳性能的不良影响。

Abstract

The influence of hydrogen on very high cycle fatigue properties of high strength steels 42CrMoVNb was investigated by means of pre-charging hydrogen, a thermal desorption spectrometry (TDS) analysis and ultra-sonic fatigue test. The results show that in contrast with the tempered specimens of 500℃, a large amount of (V,X)C precipitates, which are less than 18nm and maintaining coherent relationship with matrix form in the tempered specimens of 600℃. The diffusion and distribution of hydrogen in specimens is affected by (V,X)C precipitates obviously, and the negative influence of hydrogen on very high cycle fatigue properties of high strength steels is reduced by using the hydrogen trapping technology of (V,X)C precipitates.

关键词

/ 析出相 / 超高周疲劳

Key words

Hydrogen / Precipitation / Very high cycle fatigue

引用本文

导出引用
周超 张永健 惠卫军 王磊. 氢对42CrMoVNb钢超高周疲劳性能的影响[J]. 钢铁研究学报, 2013, 25(12): 52-57
ZHOU Chao,,ZHANG Yong-jian,HUI Wei-jun,WANG Lei. Effect of Hydrogen on Fatigue Properties of High Strength Steel 42CrMoVNb[J]. Journal of Iron and Steel Research, 2013, 25(12): 52-57

参考文献

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