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A deformation mechanism map is a way of representing the dominant deformation mechanism in a material loaded under a given set of conditions and thereby its likely failure mode. Deformation mechanism maps usually consist of some kind of stress plotted against some kind of temperature axis, typically stress normalised using the shear modulus versus homologous temperature with contours of strain rate.〔 〕 For a given set of operating conditions calculations are undergone and experiments performed to determine the predominant mechanism operative for a given material. Deformation Maps can also be constructed using any two of stress (normalised), temperature (normalised) and strain rate, with contours of the third variable. A stress/strain rate plot is useful because power-law mechanisms then have contours of temperature which are straight lines. Deformation mechanism Maps should not be confused with the similar but distinct Failure Mechanism maps, which were also first developed by Ashby. ==Constructing the Map== Repeated experiments are performed to characterize the mechanism by which the material deforms. The dominant mechanism is the one which dominates the continuous deformation rate (strain rate), however at any given level of stress and temperature, more than one of the creep and plasticity mechanisms may be active. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Deformation mechanism map」の詳細全文を読む スポンサード リンク
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