Study of deformation texture in an AZ31 magnesium alloy rolled at wide range of rolling speed and reductions

17th International Conference on Textures of Materials

材料科学;物理学

Sanjari, M.^1 ; Tamimi, S.^2 ; Su, J.^1 ; Kabir, A.S.^1 ; Hara, K.^3 ; Utsunomiya, H.^3 ; Petrov, R.^4 ; Yue, S.^1 ; Kestens, L.^4

Department of Materials Engineering, McGill University, Canada^1

Center for Mechanical Technology and Automation, Department of Mechanical Engineering, University of Aveiro, Portugal^2

Division of Materials and Manufacturing Science, Graduate School of Engineering, Japan^3

Department of Materials Science and Engineering, Ghent University, Belgium^4

关键词: AZ31 magnesium alloy;    AZ31B magnesium alloys;    Component manufacturing;    Crystallographic orientations;    Deformation mechanism;    High speed rollings;    Texture evolutions;    VPSC;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/82/1/012030/pdf
DOI  :  10.1088/1757-899X/82/1/012030

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

The plasticity of Mg is restricted at low temperatures because: (a) only a small number of deformation mechanisms can be activated, and (b) a preferred crystallographic orientation (texture) develops in wrought alloys, especially in flat-rolled sheets. This causes problems in thin sheet processing as well as component manufacturing from the sheet. In this study, different rolling speeds from 15 to 1000 m/min were employed to warm-roll AZ31B magnesium alloy to different reductions. The results show that AZ31B sheets rolled at 15 m/min and 100 °C has fractured for reductions of more than 30% per pass. However, by increasing the rolling speed to 1000 m/min the rollability was improved significantly and the material can be rolled to reductions of more than 70% per pass. The results show that with increasing strain rate at 100°C, the splitting of basal poles was observed, indicating the activation of more contraction twins and secondary twins.