DISLOCATION DISTRIBUTION NEAR THE CRACK TIP OF I-MODE AND II-MODE IN BULK ALUMINUM SINGLE-CRYSTAL
文献类型：期刊论文
| 作者 | Y. B. Xu ; K. F. Ha ; Z. G. Wang ; X. H. Wang ; J. Li |
| 刊名 | Journal of Applied Physics
 |
| 出版日期 | 1991 |
| 卷号 | 69期号:1页码:203-206 |
| 关键词 | electron-microscope tem observations plastic zone bcc metals fracture ductile |
| ISSN号 | 0021-8979 |
| 中文摘要 | Dislocation distribution near the crack tip of I and II modes in bulk aluminum single crystal has been decorated by using the etching pit technique and then was observed by scanning electron microscopy. It has been shown that two kinds of distribution of dislocations, i.e., shielding and antishielding dislocations are found to exist near the crack tip. In addition to these, the dislocation-free zone is still observed to be between the crack tip and the plastic zone. According to Rice and Thomson [Philos. Mag. 29, 73 (1974)], the dislocation mode of the elastic-plastic crack is extended to include the antishielding dislocations as part of a crack-tip equilibrium configuration, which may be described as follows: (mu-b/2-pi) (S-a-e + S-s-c + S(c)s + S(e)a) [f(x')/(x - x')]dx' + sigma-a = 0, when /x/ < C, or sigma-f, when c < /x/ < s and e < /x/ < a. The factor affecting the dislocation distribution are discussed in detail. |
| 原文出处 | |
| 公开日期 | 2012-04-14 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/39482]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 推荐引用方式 GB/T 7714 | Y. B. Xu,K. F. Ha,Z. G. Wang,et al. DISLOCATION DISTRIBUTION NEAR THE CRACK TIP OF I-MODE AND II-MODE IN BULK ALUMINUM SINGLE-CRYSTAL[J]. Journal of Applied Physics,1991,69(1):203-206. |
| APA | Y. B. Xu,K. F. Ha,Z. G. Wang,X. H. Wang,&J. Li.(1991).DISLOCATION DISTRIBUTION NEAR THE CRACK TIP OF I-MODE AND II-MODE IN BULK ALUMINUM SINGLE-CRYSTAL.Journal of Applied Physics,69(1),203-206. |
| MLA | Y. B. Xu,et al."DISLOCATION DISTRIBUTION NEAR THE CRACK TIP OF I-MODE AND II-MODE IN BULK ALUMINUM SINGLE-CRYSTAL".Journal of Applied Physics 69.1(1991):203-206. |
入库方式： OAI收割
来源：金属研究所
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