金属学报  1986, Vol. 22 Issue (4): 71-73

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Ⅱ型试样的氢致开裂

张统一;褚武扬;李英;肖纪美

北京钢铁学院;北京钢铁学院;北京钢铁学院;北京钢铁学院

HYDROGEN-INDUCED DELAYED FRACTURE UNDER MODE Ⅱ LOADING

by ZHANG Tongyi; CHU Wuyang; LI Ying; XIAO Jimei (Beijing University of Iron and Steel Technology)

张统一;褚武扬;李英;肖纪美. Ⅱ型试样的氢致开裂[J]. 金属学报, 1986, 22(4): 71-73.
, , , . HYDROGEN-INDUCED DELAYED FRACTURE UNDER MODE Ⅱ LOADING[J]. Acta Metall Sin, 1986, 22(4): 71-73.

摘要 参考文献 相关文章 Metrics 全文: PDF(1144 KB)   摘要: <正> 到目前为止,对Ⅱ型试样的氢致开裂和应力腐蚀还没有进行深入的研究。本文用超高强钢Ⅱ型缺口试样,研究Ⅱ型试样能否产生氢致开裂,研究氢致裂纹的形核位置及方向,从而加深了对氢致开裂机理的研究。同时,用有限元8节点等参元法计算了缺口前端的应力场,并用之对实验结果进行了定量分析。 实验过程 超高强度钢34CrNi3MoA成分为(wt-％):C=0.33,Si=0.25,Mn=0.67,Cr=0.93,Ni=2.80,Mo=0.34,其余为Fe。试样加工 Abstract：Hydrogen induced cracking (HIC) of a high strength steel 34CrNi3MoA (TS=1700 MPa) under mode Ⅱ loading was investigated using notched specimens. The stress field around the notch tip was analyzed by means of finite element method. The result shows that the HIC under mode Ⅱ loading initiates at the back of the notch tip, i. e., θ=-110°, where hydrostatic stress has the maximum value. However, cracking is oriented along the shear stress direction at the site, not normal to the direction of maximum principal stress component. On the contrary, if the specimens are loaded to fracture in air under mode Ⅱ loading cracking at the maximum shear stress site around the notch tip and the cracking direction coincides with the direction of the maximim shear stress. The facts above mentioned indicate that hydrogen induced delayed plastic deformation is a necessary condition for HIC. 收稿日期: 1986-04-18      服务 把本文推荐给朋友 加入引用管理器 E-mail Alert RSS 作者相关文章 张统一 褚武扬 李英 肖纪美 44.8K 链接本文: https://www.ams.org.cn/CN/      或      https://www.ams.org.cn/CN/Y1986/V22/I4/71 1 Tabata, T.; Birnbaum, H.K., Scr. Metall., 17 (1984) , 947． 2 张统一;褚武扬;肖纪美;金属学报,21(1985) ,A370． 3 张统一;褚武扬;肖纪美;中国科学,1986． №3． 316． 4 Wang,Y.B.(王燕斌);Chu,W.Y.(褚武扬);Hsiao,C.M.(肖纪美),Scr.Metall.,19(1985) ,1161．o No related articles found! Viewed Full text Abstract Cited   Shared      Discussed