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- W950973984 abstract "Fundamental concepts concerning the micromechanics of crystalline plasticity are reviewed in this chapter. An overview of deformation mechanisms is given for crystalline materials that possess grain sizes that are said to be “traditional,” i.e ., larger than about 2 µm in diameter. Some brief comments are made about the trends in deformation mechanisms when the grain sizes are much below this range (nanograins). Early Observations In a series of articles published between 1898 and 1900 Ewing and Rosenhain summarized their metallographic studies of deformed polycrystalline metals. The conclusion they reached concerning the mechanisms of plastic deformation provided a remarkably accurate picture of crystalline plasticity. Figure 27.1 is a schematic diagram, including some surrounding text, taken from their 1900 overview article. Figure 27.2 is one of their many excellent optical micrographs of deformed polycrystalline metals; the particular micrograph in Fig. 27.2 is of polycrystalline lead. They identified the steps a-e in Fig. 27.1 as “slip-steps” caused by the emergence of “slip bands,” which formed along crystallographic planes, at the specimen surfaces (thereby coining these two well-known phrases). Traces of the crystalline slip planes were indicated by the dashed lines. The line labeled C was indicated by them to be a grain boundary separating two grains; the grains, they concluded, were crystals with a more or less homogeneous crystallographic orientation. Slip steps corresponding to the diagram of Fig. 27.1 are clearly visible in the micrograph of Fig. 27.2." @default.
- W950973984 created "2016-06-24" @default.
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- W950973984 date "2006-01-16" @default.
- W950973984 modified "2023-09-23" @default.
- W950973984 title "Micromechanics of Crystallographic Slip" @default.
- W950973984 doi "https://doi.org/10.1017/cbo9780511755514.028" @default.
- W950973984 hasPublicationYear "2006" @default.
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