Interpretation of hardness evolution in metals processed by high-pressure torsion
Authors: Kawasaki, M., Figueiredo, R.B., Huang, Y. and Langdon, T.G.
Journal: Journal of Materials Science
Volume: 49
Issue: 19
Pages: 6586-6596
eISSN: 1573-4803
ISSN: 0022-2461
DOI: 10.1007/s10853-014-8262-8
Abstract:The processing of metals through the application of high-pressure torsion (HPT) provides the potential for achieving exceptional grain refinement in bulk disks. Numerous reports are now available describing the application of HPT to a range of pure metals and simple alloys. Excellent grain refinement was achieved using this processing technique with the average grain size often reduced to the nanoscale range. By contrast, the development of microstructure and local hardness is different depending upon the material properties. In order to make HPT processing more practical, it is indispensable to investigate the nature of the sample characteristics immediately after conventional HPT processing. Accordingly, this report demonstrates the different models of hardness evolution using representative materials of AZ31 magnesium alloy, high-purity aluminum, and Zn-22 % Al eutectoid alloy processed by HPT. Separate models are described for the evolution of hardness with equivalent strain, and the correlation between these models is suggested by the homologous temperature of HPT processing. A special emphasis is placed on examining the numerical expression of the level of strain hardening or softening of these metals with increasing equivalent strain. © 2014 Springer Science+Business Media New York.
Source: Scopus
Interpretation of hardness evolution in metals processed by high-pressure torsion
Authors: Kawasaki, M., Figueiredo, R.B., Huang, Y. and Langdon, T.G.
Journal: JOURNAL OF MATERIALS SCIENCE
Volume: 49
Issue: 19
Pages: 6586-6596
eISSN: 1573-4803
ISSN: 0022-2461
DOI: 10.1007/s10853-014-8262-8
Source: Web of Science (Lite)
Interpretation of hardness evolution in metals processed by high-pressure torsion
Authors: Kawasaki, M., Figueiredo, R.B., Huang, Y. and Langdon, T.G.
Conference: 143rd TMS Annual Meeting
Dates: 16-20 February 2014
Journal: Journal of Materials Science
Volume: 49
Issue: 19
Pages: 6586-6596
eISSN: 1573-4803
ISSN: 0022-2461
DOI: 10.1007/s10853-014-8262-8
Abstract:The processing of metals through the application of high-pressure torsion (HPT) provides the potential for achieving exceptional grain refinement in bulk disks. Numerous reports are now available describing the application of HPT to a range of pure metals and simple alloys. Excellent grain refinement was achieved using this processing technique with the average grain size often reduced to the nanoscale range. By contrast, the development of microstructure and local hardness is different depending upon the material properties. In order to make HPT processing more practical, it is indispensable to investigate the nature of the sample characteristics immediately after conventional HPT processing. Accordingly, this report demonstrates the different models of hardness evolution using representative materials of AZ31 magnesium alloy, high-purity aluminum, and Zn-22 % Al eutectoid alloy processed by HPT. Separate models are described for the evolution of hardness with equivalent strain, and the correlation between these models is suggested by the homologous temperature of HPT processing. A special emphasis is placed on examining the numerical expression of the level of strain hardening or softening of these metals with increasing equivalent strain. © 2014 Springer Science+Business Media New York.
Source: Manual
Preferred by: Yi Huang