The fatigue limits of copper single crystals cyclically deformed at constant plastic strain amplitudes

Li, X. W.; Umakoshi, Yukichi; Wang, Z. G.; Li, S. X.

doi:10.1080/09500830110055364

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Cited by 6 publications

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“…The endurance limit of the pure polycrystalline copper is also found to be consistent with the endurance limits of the single crystal copper. Li et al (2001) summarized the fatigue limits of differently oriented copper single crystals. It was reported that the fatigue limits in terms of shear plastic strain amplitudes were a strong function of the crystal orientations.…”

Section: Discussionmentioning

confidence: 99%

Fatigue of polycrystalline copper with different grain sizes and texture

Zhang

Jiang

2006

International Journal of Plasticity

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Section: Discussionmentioning

confidence: 99%

Fatigue of polycrystalline copper with different grain sizes and texture

Zhang

Jiang

2006

International Journal of Plasticity

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Characterization of dislocation structures in copper single crystals using electron channelling contrast technique in SEM

Zhou

Guo

et al. 2009

Cryst. Res. Technol.

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The dislocation structures induced by low-plastic-strain-amplitude cyclic deformation of [111] multiple-sliporiented Cu single crystals were investigated using electron channelling contrast (ECC) technique in scanning electron microscopy (SEM). At a low plastic strain amplitude γ pl of 8.8 × 10 -5, the saturated dislocation structure is mainly composed of labyrinth-like vein structure (or irregular labyrinths), and the cyclic hardening behavior at such a low γ pl is interpreted as being the result of dislocation multiplication by a FrankRead mechanism. As γ pl increases to 4.0 × 10 -4 , the unsaturated dislocation structure exhibits two kinds of distinctive configurations, i.e., dislocation walls and misoriented cells. Interestingly, these misoriented dislocation cells are strictly aligned along the primary slip plane (111), constituting a unique persistent slip band (PSB) structure. Here, these cells are thus called PSB cells. In addition, there is a locally distinctive region comprising some cells having a recrystallization-like feature in the whole structure of PSB cells. The formation of the structure of PSB cells is discussed.

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