The role of mixed-mode deformation at the crack tip on shear banding and crack propagation of ultrafine-grained copper

Goto, M.; Han, S. Z.; Ahn, J. H.; Yakushiji, T.; Euh, K.; Kim, S. S.; Lee, J.

doi:10.1016/j.ijfatigue.2014.04.007

상세 보기

The role of mixed-mode deformation at the crack tip on shear banding and crack propagation of ultrafine-grained copper

Goto, M.;
Han, S. Z.;
Ahn, J. H.;
Yakushiji, T.;
Euh, K.;
... Kim, S. S.;
외 1명

Citations

WEB OF SCIENCE

9

Citations

SCOPUS

10

초록

Stress-controlled fatigue tests of ultrafine-grained copper round-bar specimens were conducted. Although the crack paths inclined 45 degrees and 90 degrees to the loading-axis were observed in the different locations, crack faces were extended along one set of maximum shear-stress planes, corresponding to the final ECAP shear plane. Profile of crack faces was examined, showing the aspect ratios of 0.38 and 1.10 for the cracks with 45 degrees and 90 degrees inclined path directions with respect to the loading-axis, respectively. The role of deformation mode at the crack tip on shear-banding and crack growth behavior were discussed in terms of the mixed-mode stress intensity factor. (C) 2014 Elsevier Ltd. All rights reserved.

키워드

Equal channel angular processing; Copper; Shear bands; Crack propagation; Stress intensity factor; SEVERE PLASTIC-DEFORMATION; STRESS INTENSITY FACTORS; FATIGUE PROPERTIES; CYCLIC DEFORMATION; GROWTH-BEHAVIOR; FINE; SURFACE; DAMAGE; EVOLUTION; STRENGTH

제목: The role of mixed-mode deformation at the crack tip on shear banding and crack propagation of ultrafine-grained copper

저자: Goto, M.; Han, S. Z.; Ahn, J. H.; Yakushiji, T.; Euh, K.; Kim, S. S.; Lee, J.

DOI: 10.1016/j.ijfatigue.2014.04.007

발행일: 2014-09

유형: Article

저널명: International Journal of Fatigue

권: 66

페이지: 220 ~ 228