Crack propagation in <110> oriented copper bicrystals with the {Sigma}9 and random boundary

Journal Article · Wed Feb 01 04:00:00 EST 1995 · Scripta Metallurgica et Materialia

DOI:https://doi.org/10.1016/S0956-716X(99)80077-6· OSTI ID:231120

Vinogradov, A; Hashimoto, S; Miura, S ^[1]

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1. Kyoto Univ. (Japan). Dept. of Engineering Science

The role of a grain boundary (GB) in the fracture of metals has been a subject of interest and controversy for a long time. A dual effect of GB on crack initiation and propagation is still discussed. The GBs usually assist crack initiation and propagation. However, it can provide obstacle to the crack under certain circumstances. The purpose of the present work is to examine the effect of GB on fatigue crack propagation in copper compact tension (CT) specimens which allows one to control the crack initiation site and to observe crack growth on a relatively large area. Two kinds of bicrystals possessing a longitudinal planar {Sigma}9, A, or a random GB, B, were chosen in order to clarify the role of the GB structure.

• OSTI ID: 231120
• Journal Information: Scripta Metallurgica et Materialia, Journal Name: Scripta Metallurgica et Materialia Journal Issue: 3 Vol. 32; ISSN 0956-716X; ISSN SCRMEX
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
COPPER
CRACK PROPAGATION
EXPERIMENTAL DATA
FATIGUE
GRAIN BOUNDARIES
GRAIN ORIENTATION