Twins in asymmetrically rolled AZ31 analyzed with a Transmission Electron Microscope Orientation mapping tool

6th International Conference on Nanomaterials by Severe Plastic Deformation

材料科学;化学

Rauch, E.F.^1 ; Forget, M.^1 ; Kapelski, G.^1

Science et Ingénierie des Matériaux et des Precédés, Université de Grenoble/CNRS, Grenoble INP-UJF, 38402 Saint-Martin d'Hères, France^1

关键词: Asymmetrical rolling;    Az31 sheets;    double twins;    Nano scale;    Orientation mapping;    Orientation maps;    Shear components;    Structural feature;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/63/1/012150/pdf
DOI  :  10.1088/1757-899X/63/1/012150

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

An AZ31 sheet was rolled in symmetrical and asymmetrical conditions to a total reduction of 50%. Twins and double twins are the dominant structural features observed after deformation. They were analyzed systematically with the help of a dedicated TEM attachment that provides orientation maps at nanoscale. This particular characterization technic is similar to SEM-EBSD tools but far less sensitive to strains. Twinning is shown to differ substantially with the introduction of a shear component. Despite their frequency, it is argued that twins have little effect on the forming process.