Fabrication of hybrid metal systems through the application of high-pressure torsion

7th International Conference on Nanomaterials by Severe Plastic Deformation

Kawasaki, Megumi^1,2 ; Han, Dae-Kuen^1 ; Han, Jae-Kyung^1 ; Jang, Jae-Il^1 ; Langdon, Terence G.^2,3

Division of Materials Science and Engineering, Hanyang University, Seoul

133-791, Korea, Republic of^1

Departments of Aerospace and Mechanical Engineering and Materials Science, University of Southern California, Los Angeles

CA

90089-1453, United States^2

Materials Research Group, Faculty of Engineering and the Environment, University of Southampton, Southampton

SO17 1BJ, United Kingdom^3

关键词: High hardness;    High pressure torsions;    Metal matrix nano composites;    Metal systems;    Pure metals;    Rapid deformation;    Rapid synthesis;    Simultaneous formation;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/194/1/012002/pdf
DOI  :  10.1088/1757-899X/194/1/012002

来源: IOP

【 摘 要 】

This presentation demonstrates a simple and very rapid synthesis of metal matrix nanocomposites (MMNCs) in Al-based hybrid systems which are achieved by processing stacked disks of two pure metals through the application of high-pressure torsion (HPT) at ambient temperature. These synthesized hybrid systems exhibit exceptionally high hardness through rapid deformation-induced diffusion and the simultaneous formation of different intermetallic compounds. The experiments also show further improvement in mechanical properties is available by increasing the numbers of HPT turns and additional short-term annealing. Thus, by demonstrating the fabrication of the Al-Mg and Al-Cu hybrid systems, the present paper suggests a potential for simply and expeditiously fabricating a wide range of MMNCs through HPT.