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Micromechanics of high temperature deformation and failure (1985)

Nasser, S. N. ; Weertman, J. R.

In: CASI

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Publication Date: 2016-06-07

Description: The micromechanics of the constitutive behavior of elastoplastic materials at high temperatures was examined. The experimental work focused on the development of microscopic defects in superalloys (Waspaloy), especially the formation of voids at grain boundary carbides, and slip induced surface cracks within grains upon cyclic loading at high temperatures. The influence of these defects on the life expectancy of the material was examined. The theoretical work consists of two parts: (1) analytical description of the mechanisms that lead to defects observed experimentally; and (2) development of macroscopic elastoplastic nonlinear constitutive relations based on mechanical modeling.

Keywords: STRUCTURAL MECHANICS

Type: NASA. Lewis Research Center Nonlinear Constitutive Relations for High Temp. Appl., 1984; p 55-63

Format: application/pdf

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