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Relationship between the fatigue cracking probability and the grain-boundary category
Zhang, ZF; Wang, ZG
Corresponding AuthorZhang, ZF()
2000-07-01
Source PublicationPHILOSOPHICAL MAGAZINE LETTERS
ISSN0950-0839
Volume80Issue:7Pages:483-488
AbstractIn 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 BySCI
Language英语
WOS Research AreaPhysics
WOS SubjectPhysics, Condensed Matter
WOS IDWOS:000088407200005
PublisherTAYLOR & FRANCIS LTD
Citation statistics
Cited Times:15[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/110976
Collection中国科学院金属研究所
Corresponding AuthorZhang, ZF
AffiliationChinese 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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