발간논문

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Vol.38, No.8, 985 ~ 994, 2000
Title
The Effects of Texture on the Strength in Zr-2.5%Nb Alloy
김성수Sung Soo Kim,김영석Young Suk Kim
Abstract
The reason why the strength in the transverse direction is higher than that of the longitudinal direction has been identified through the investigation and quantitative treatment of the effect of the basal pole component (F) on the strength in Zr-2.5Nb pressure tube materials. Since the yield strength at room temperature has a linear relationship of σ_(YS) = σ_i + K_F F with the basal pole component in the tensile direction in the as-received and recrystallized material, it can be concluded that the origin of the higher yield strength in the transverse direction mainly is attributed to the higher basal pole component. The deformation mechanisms operated during tensile tests have been analyzed by the observation of the stress-strain curves and by the texture measurement before and after tensile test. The critical resolved shears stressed (CRSS) for $lt;a$gt; slip and (112＿1) and (101＿2) twinning system have been evaluated using the strength of the recrystallized materials and the relationship between the basal pole component and strength.
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