Effect of rolling direction on texture and deformation mechanism of ZIRLO alloy
The microstructure and texture evolution of ZIRLO alloy of Zr-Sn-Nb series for nuclear use after rolling in the length and width directions were studied.The slip systems activated in the rolling process were analyzed and the proportion of each slip system with different deformations was calculated by electron backscatter diffraction(EBSD)and in-grain misorientation axis(IGMA)methods.The results show that rolling in different directions does not change the texture type,but there are certain differences in texture characteristics.The nearly elliptical bimodal texture is formed when rolling in the length direction,while the more concentrated and symmetrical bimodal tex-ture is formed when rolling in the width direction.The dominant deformation mode varies depending on the deformation.Prismatic slip dominates the deformation with small deformation,and the slip activities of basal slip and pyramidal slip increase with the increase of de-formation.More { 1012} twins are generated to coordinate deformation when rolling along the width direction and the numbers of basal and pyramidal slip are more than that in the length direction under large deformation.
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