| Relationship between the fatigue cracking probability and the grain-boundary category | |
| Zhang, ZF; Wang, ZG | |
| Corresponding Author | Zhang, ZF() |
| 2000-07-01 | |
| Source Publication | PHILOSOPHICAL MAGAZINE LETTERS
 |
| ISSN | 0950-0839 |
| Volume | 80Issue:7Pages:483-488 |
| Abstract | In this payer, the probability of fatigue cracking along different kinds of grain boundary (GB) and persistent slip bands (PSBs) is considered in the light of data obtained by cyclic deformation of copper bicrystals and columnar crystals. It is found that, in copper bicrystals, fatigue cracks always nucleate and propagate along large-angle GBs, irrespective of whether the GB is perpendicular, parallel or inclined to the stress axis. On the contrary, for columnar copper crystals containing small-angle GBs, PSB-matrix interfaces become the preferential sites for initiation of fatigue crack; fatigue cracking along the small-angle GBs was never observed. For a special [134]/[1827] copper bicrystal with a Sigma = 19b GB and a common primary slip plane, GB cracking also results in fatigue failure. Based on the results above, the interactions of dislocations carried by PSBs with GBs. including 'pile-up of dislocations', 'passing through of dislocations' and 'partial passing-through dislocations', are discussed. It is suggested that the probability of fatigue cracking in fatigued copper crystals increases in the order of small-angle GBs, PSBs and large-angle GBs. |
| Indexed By | SCI |
| Language | 英语 |
| WOS Research Area | Physics |
| WOS Subject | Physics, Condensed Matter |
| WOS ID | WOS:000088407200005 |
| Publisher | TAYLOR & FRANCIS LTD |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/110976 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Zhang, ZF |
| Affiliation | Chinese Acad Sci, Met Res Inst, State Key Lab Fatigue & Facture Mat, Shenyang 110015, Peoples R China |
| Recommended Citation GB/T 7714 | Zhang, ZF,Wang, ZG. Relationship between the fatigue cracking probability and the grain-boundary category[J]. PHILOSOPHICAL MAGAZINE LETTERS,2000,80(7):483-488. |
| APA | Zhang, ZF,&Wang, ZG.(2000).Relationship between the fatigue cracking probability and the grain-boundary category.PHILOSOPHICAL MAGAZINE LETTERS,80(7),483-488. |
| MLA | Zhang, ZF,et al."Relationship between the fatigue cracking probability and the grain-boundary category".PHILOSOPHICAL MAGAZINE LETTERS 80.7(2000):483-488. |
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