Development of extrusion-torsion simultaneous processing for grain refinement in Magnesium alloys

6th International Conference on Nanomaterials by Severe Plastic Deformation

材料科学;化学

Furui, M.^1 ; Aida, T.^2

Tokyo University of Technology, Hachiouji, Japan^1

University of Toyama, Toyama, Japan^2

关键词: As-extruded;    AZ91D magnesium alloys;    Extrusion process;    Grain size;    Hardness changes;    High strength;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/63/1/012005/pdf
DOI  :  10.1088/1757-899X/63/1/012005

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

We have proposed a new extrusion process combined with torsion. Extrusion-torsion simultaneous processing is a very attractive technique for fabricating a rod-shape material with high strength and excellent workability. The grain size of AZ91D magnesium alloy was gradually decreased with increasing the torsion speed in as extrusion-twisted conditions. Grain refinement under 2um was achieved by the optimized extrusion-torsion condition. Hardness was increased by the addition of torsion speed comparing with as solution-treated and as extruded samples. Hardness change was dependent on the extrusion-torsion temperature.