The dislocation pattern evolution and crack nucleation in a fatigued copper bicrystal with perpendicular grain boundary (GB) have been investigated by electron channelling contrast (ECC) technique in SEM. The observation results show that in the process from the formation of deformation band (DB) to the appearance of fatigued crack, the spacing between the wall structures in DB keeps constant. The dislocation pattern around the crack tips of transgranular and granular presents misorientation cell structure. The crack preferentially form in DB.
Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714
Li, Y,Li, SX,Li, GY. Dislocation pattern in deformation band and crack nucleation in a fatigued copper bicrystal with perpendicular grain boundary[J]. ACTA METALLURGICA SINICA,2004,40(5):462-466.
APA
Li, Y,Li, SX,&Li, GY.(2004).Dislocation pattern in deformation band and crack nucleation in a fatigued copper bicrystal with perpendicular grain boundary.ACTA METALLURGICA SINICA,40(5),462-466.
MLA
Li, Y,et al."Dislocation pattern in deformation band and crack nucleation in a fatigued copper bicrystal with perpendicular grain boundary".ACTA METALLURGICA SINICA 40.5(2004):462-466.
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