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dc.contributor.authorZhilyaev, A.P.
dc.contributor.authorMcNelley, T.R.
dc.contributor.authorLangdon, T.G.
dc.date.accessioned2017-08-08T16:32:33Z
dc.date.available2017-08-08T16:32:33Z
dc.date.issued2007
dc.identifier.citationA.P. Zhilyaev, T.R. McNelley, T.G. Langdon, "Evolution of microstructure and microtexture in fcc metals during high-pressure torsion," Journal of Materials Science, v.42, (2007) , pp. 1517-1528.en_US
dc.identifier.urihttp://hdl.handle.net/10945/55370
dc.descriptionThe article of record as published may be found at http://dx.doi.org/10.1007/s10853-006-0628-0en_US
dc.description.abstractPure nickel and commercially pure (CP) aluminium were selected as model fcc materials for a detailed investigation of the experimental parameters influencing grain refinement and evolution of micro- structure and microtexture during processing by high- pressure torsion (HPT). Samples were examined after HPT using microhardness measurements, transmission electron microscopy and orientation imaging micros- copy. Processing by HPT produces a grain size of ~170 nm in pure Ni and ~1 lm in CP aluminium. It is shown that homogeneous and equiaxed microstructures can be attained throughout the samples of nickel when using applied pressures of at least ~6 GPa after 5 whole revolution. In CP aluminium, a homogeneous and equiaxed microstructure was achieved after 2 whole revolutions under an applied pressure of 1 GPa. For these conditions, the distributions of grain boundary misorientations are similar in the centre and at the periphery of the samples. It is shown that simple shear texture develops in fcc metals subjected to high-pressure torsion. Some grain growth was detected at the periphery of the Al disk after 8 revolutions. The factors influencing the development of homogeneous microstructures in processing by HPT are discussed.en_US
dc.description.sponsorshipNational Research Council of the National Academy of Science (USA)en_US
dc.description.sponsorshipSpanish Ministry of Education and Scienceen_US
dc.description.sponsorshipU.S. Air Force Office of Scientific Research (AFOSR)en_US
dc.description.sponsorshipNational Science Foundation (NSF)en_US
dc.format.extent12 p.en_US
dc.publisherElsevieren_US
dc.rightsThis publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.en_US
dc.titleEvolution of microstructure and microtexture in fcc metals during high-pressure torsionen_US
dc.typeArticleen_US
dc.contributor.corporateNaval Postgraduate School (U.S.)en_US
dc.contributor.departmentMechanical and Astronautical Engineeringen_US
dc.description.funderINTAS-03513779en_US
dc.description.funderRFBR-05-03-32233-aen_US
dc.description.funderFIATA06058G001 (TRM) (AFOSR)en_US
dc.description.funderGrant no. DMR-0243331 (TGL) (NSF)en_US


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