ANALYSIS OF ELASTIC ANISOTROPY AND MICROYIELDING IN POLYCRYSTALLINE MOLYBDENUM TZM.

Abstract

Samples in sheet form have been investigated in the warm-worked condition and after recrystallization heat treatments to produce a range of different grain sizes. Orientation distributions were calculated from measured pole figure data and specimens were cut at various angles to determine planar variations in Young's modulus and microyield stress. Agreement is found between the measured moduli and those calculated according to the Eshelby-Kroener-Kneer model. Variations in stress level from grain to grain were calculated used to predict the microyield point.