金属学报  1987, Vol. 23 Issue (5): 403-407

论文 本期目录 | 过刊浏览 |

球化低碳钢中断裂的TEM原位观测

张以增;戴蜀娟;邹鸿承;苗丕峰

华中工学院;华中工学院;华中工学院;华中工学院

IN SITU OBSERVATION OF THE FRACTURE FOR A SPHEROIDIZED LOW CARBON STEEL

by ZHANG Yizeng; DAI Shujuan; ZOU Hongcheng; MIAO Pifeng (Huazhong University of Science and Technology; Wuhan)(Manuscript received 23 January; 1986; revised manuscript 23 July; 1985)

张以增;戴蜀娟;邹鸿承;苗丕峰. 球化低碳钢中断裂的TEM原位观测[J]. 金属学报, 1987, 23(5): 403-407.
, , , . IN SITU OBSERVATION OF THE FRACTURE FOR A SPHEROIDIZED LOW CARBON STEEL[J]. Acta Metall Sin, 1987, 23(5): 403-407.

摘要 参考文献 相关文章 Metrics 全文: PDF(1991 KB)   摘要: <正> 一、前言 应用透射电子显微镜(TEM)技术观察金属薄膜的断裂过程,最早的可能是Wilsdorf的金属Al薄膜的工作.以后,Forsyth和Wilson,Kuhlman-Wilsdorf等人分别对Al-4％Cu的合金,Cu单晶体薄膜中的裂纹扩展进行了TEM的直接观 Abstract：In situ observations of the behavior of void formation and dislocations formed ahead of a crack in a spheroidized low carbon steel have been carried out during fracture tests with TEM. The results show that the fracture occurs through alternate processes of nucleation, growth and coalescence of voids during plastic deformation. Void coalescence generally associates with the necking of matrix metal between the voids. Most frequetly, the cracks are in a zigzag shape. The deformation on the two sides of a zigzag crack does not match microscopically with each other. Dislocations may emit from the crack tip when the crack is either propagating or blunting. The dislocation emission is the main cause of the crack blunting. The effect of dislocation distribution on the void formation has also been discussed. 收稿日期: 1987-05-18      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 张以增 戴蜀娟 邹鸿承 苗丕峰 44.8K 链接本文: https://www.ams.org.cn/CN/      或      https://www.ams.org.cn/CN/Y1987/V23/I5/403 1 Wilsdorf H G F. ASTM STP 245, 1958: 43 2 Forsyth P J E, Wilson RN. J Inst Met, 1963; 92: 82 3 Kuhlmann-Wilsdorf D, Wilsdorf H G F. JAppl Phys, 1960; 31: 516 4 Kobayashi S, Ohr SM. Philos Mag, 1980; A42: 763 5 Ohr SM, Narayan J. Philos Mag, 1980; A41: 81 6 Chang C-J, Ohr SM. JAppl Phys, 1981; 52: 7174 7 Ashby MF. Philos Mag, 1966; 14: 1157 8 张以增,金属学报,1983;19:A70 9 ZOU H-C(邹鸿承),Lou Y-L(娄彦良),Zhang Y-Z(张以增).Mater Sci Eng,1984;62:163 No related articles found! Viewed Full text Abstract Cited   Shared      Discussed