S-N property and fatigue damage of ultrafine grained Cu smooth specimens

Goto, M.; Han, S. Z.; Baba, M.; Ahn, J. H.; Kim, S.; Kitamura, J.

doi:10.1016/j.mspro.2014.06.087

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S-N property and fatigue damage of ultrafine grained Cu smooth specimens

Goto, M.;
Han, S. Z.;
Baba, M.;
Ahn, J. H.;
Kim, S.;
외 1명

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초록

Fatigue tests were conducted using copper processed by equal channel angular pressing (ECAP) through 4, 8 and 12 pass numbers. At high and medium stress amplitudes, the largest fatigue life was attained in the specimens processed by 8 passes, whereas the smallest one was given in 12 passes. At low stress amplitudes, S-N curves tended to coincide with a specific value of stress amplitude regardless of pass numbers. The physical background of the effect of ECAP pass numbers on S-N property was discussed from the viewpoints of microstructure and surface damage formation. (C) 2014 Elsevier Ltd.

키워드

Fatigue; Copper, Ultrafine grain; S-N curve; Crack propagation; DEFORMATION

제목: S-N property and fatigue damage of ultrafine grained Cu smooth specimens

저자: Goto, M.; Han, S. Z.; Baba, M.; Ahn, J. H.; Kim, S.; Kitamura, J.

DOI: 10.1016/j.mspro.2014.06.087

발행일: 2014

유형: Proceedings Paper

저널명: 20TH EUROPEAN CONFERENCE ON FRACTURE

권: 3

페이지: 524 ~ 530