Elastic‐Plastic Transition in Copper Crystals as Determined by an Etch‐Pit Technique
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...5]. Interestingly, this pre-yield micro-plastic activity does not change the yield strength noticeably and 4 it is also said to not alter the internal length scales of the pre-existing microstructure [16, 17, 18]. Being less direct and more difficult to verify than a definition based on deviations from elasticity, this microstructural definition relies on knowing, and being able to trace the properties of a p...
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...ues for the so -called micro-yield stresses obtained from high resolution (~nm) extensometry, etch-pit studies, or x-ray topography on bulk single crystals are ~2 MPa (Mo, W, Fe, [19]), ~1-4 MPa (Cu, [16, 20]), ~0.2-0.5 MPa (Zn, [21, 22]), ~ 0.5 MPa (Be, [23]), and ~1.5 MPa (Cu, [24]), ~2 MPa 5 (Al, [25]), ~2-30 MPa (Fe, [19, 25, 26]) was found for polycrystals. These values are thus distinctly lower than...
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