北京航空航天大学学报 ›› 2001, Vol. 27 ›› Issue (1): 1-4.

• 论文 •    下一篇

超高强度钢37SiMnCrNiMoV的储存效应研究

陈永来1, 陈亮山2, 董秀中2   

  1. 1. 北京航空航天大学 材料科学与工程系;
    2. 中国科学院 金属研究所
  • 收稿日期:1999-09-13 出版日期:2001-01-31 发布日期:2010-11-19
  • 作者简介:陈永来(1972-),男,黑龙江齐齐哈尔人,博士生,100083,北京.

Study of Storage Effect of Super-Strength Steel 37SiMnCrNiMoV

CHEN Yong-lai1, CHEN Liang-shan2, DONG Xiu-zhong2   

  1. 1. Beijing University of Aeronautics and Astronautics, Dept. of Materials Science and Engineering;
    2. Chinese Academy of Sciences, Institute of Metal Research
  • Received:1999-09-13 Online:2001-01-31 Published:2010-11-19

摘要: 采用超高强度钢37SiMnCrNiMoV制造高压容器,在某些情况下储存会显著降低其使用性能,这种现象被称为储存效应.本文以应力腐蚀破坏时间变化来衡量储存效应的强弱.研究了储存时间与储存后除氢处理对储存效应的影响.研究结果表明储存效应的实质是在第二类内应力诱导下由环境向材料内部渗氢并集聚到峰值应力区,进而在夹杂物尖端产生显微裂纹的过程.

Abstract: Super-strength steel 37SiMnCrNiMoV is widely used in aerospace and astrospace because of the high specific strength. However the service life of the pressure vessel made of steel 37SiMnCrNiMoV will be decreased after long-term storage in air environment, the phenomenon is called storage effect. Stress corrosion crack test is used to evaluate the storage effect. Effects of storage time and hydrogen-elimination treatment after storage in the buffer solution on the stress corrosion crack time are studied. Results show that the substance of storage effect is a process, in which hydrogen from the environment is induced to material and is gathered at the stress-peak fields by second internal stress, then making the microcracks produced in the tip of the inclusions.

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