An Evaluation of Homogeneity and Heterogeneity in Metals Processed by High-Pressure Torsion

• Authors: R. Figueiredo , M. Kawasaki , T. Langdon
• Languages of publication: EN

Abstracts

EN

Processing through the use of high-pressure torsion is attracting much attention at the present time because of the potential for achieving exceptional grain refinement. In principle, it appears that the thin disks used for high-pressure torsion processing should exhibit significant heterogeneity in the as-processed condition. However, experiments show that the development of homogeneity or heterogeneity is dependent upon the crystalline structure of the material. For high-purity aluminum the as-processed microstructure is very homogeneous after five or more revolutions of torsional straining but for the magnesium AZ31 alloy there is a considerable degree of heterogeneity in the as-processed disks.

Keywords

EN

61.66.Bi; 61.66.Dk

Discipline

• 61.66.Bi: Elemental solids
• 61.66.Dk: Alloys

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2012
• Volume: 122
• Issue: 3
• Pages: 425-429

Dates

published

2012-09

Contributors

author

R. Figueiredo

• Department of Materials Engineering and Civil Construction, Federal University of Minas Gerais Belo Horizonte, MG 31270-901, Brazil

author

M. Kawasaki

• Departments of Aerospace & Mechanical Engineering and Materials Science, University of Southern California, Los Angeles, CA 90089-1453, USA

author

T. Langdon

• Departments of Aerospace & Mechanical Engineering and Materials Science, University of Southern California, Los Angeles, CA 90089-1453, USA
• Materials Research Group, School of Engineering Sciences, University of Southampton, Southampton SO17 1BJ, United Kingdom

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Identifiers

DOI

10.12693/APhysPolA.122.425