Processing magnesium alloys by severe plastic deformation

6th International Conference on Nanomaterials by Severe Plastic Deformation

材料科学;化学

Figueiredo, Roberto B.^1 ; Aguilar, Maria Teresa P.^1 ; Cetlin, Paulo Roberto^2 ; Langdon, Terence G.^3,4

Department of Materials Engineering and Civil Construction, School of Engineering, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, Brazil^1

Department of Mechanical Engineering, School of Engineering, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, Brazil^2

Materials Research Group, Faculty of Engineering and the Environment, University of Southampton, Southampton SO17 1BJ, United Kingdom^3

Departments of Aerospace and Mechanical Engineering and Materials Science, University of Southern California, Los Angeles CA 90089-1453, United States^4

关键词: High pressure torsions;    Mechanical behavior;    Moderate temperature;    Multiple pass;    Room temperature processing;    Severe plastic deformations;    Ultrafine grained structure;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/63/1/012171/pdf
DOI  :  10.1088/1757-899X/63/1/012171

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

The use of severe plastic deformation techniques for processing magnesium alloys has moved from the early difficulties of processing to a stage of tailoring the best properties of these materials. The present paper reviews processing, structure and mechanical properties characterization. It is shown that ultrafine-grained structures are obtained in magnesium alloys processed by multiple passes of Equal-Channel Angular Pressing at moderate temperatures. Ultrafine-grained structures are also obtained by room temperature processing by High- Pressure Torsion. The ultrafine-grained structures increase strength and introduce excellent superplastic capabilities in many magnesium alloys. Moreover, processing magnesium alloys by severe plastic deformation leads to the development of anisotropy in mechanical behavior.