caa a22 4500 463230841 CHVBK 20180405153241.0 cr unu---uuuuu 170326e20070301xx s 000 0 eng 10.1007/s10853-006-0628-0 doi (NATIONALLICENCE)springer-10.1007/s10853-006-0628-0 Evolution of microstructure and microtexture in fcc metals during high-pressure torsion [Elektronische Daten] [A. Zhilyaev, T. McNelley, T. Langdon] Pure 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 microstructure and microtexture during processing by high-pressure torsion (HPT). Samples were examined after HPT using microhardness measurements, transmission electron microscopy and orientation imaging microscopy. Processing by HPT produces a grain size of ∼170nm in pure Ni and ∼1μm 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 ∼6GPa after 5 whole revolution. In CP aluminium, a homogeneous and equiaxed microstructure was achieved after 2 whole revolutions under an applied pressure of 1GPa. 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. Springer Science+Business Media, LLC, 2006 Zhilyaev A. Department of Physical Metallurgy, Centro National de Investigaciones Metallúrgicas, 28040, Madrid, CSIS, Spain aut McNelley T. Department of Mechanical and Astronautical Engineering, Naval Postgraduate School, 93943-5100, Monterey, CA, USA aut Langdon T. Departments of Aerospace & Mechanical Engineering and Materials Science, University of Southern California, 90089-1453, Los Angeles, CA, USA aut Journal of Materials Science Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com 42/5(2007-03-01), 1517-1528 0022-2461 42:5<1517 2007 42 10853 https://doi.org/10.1007/s10853-006-0628-0 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10853-006-0628-0 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Zhilyaev A. Department of Physical Metallurgy, Centro National de Investigaciones Metallúrgicas, 28040, Madrid, CSIS, Spain aut NATIONALLICENCE 700 1- McNelley T. Department of Mechanical and Astronautical Engineering, Naval Postgraduate School, 93943-5100, Monterey, CA, USA aut NATIONALLICENCE 700 1- Langdon T. Departments of Aerospace & Mechanical Engineering and Materials Science, University of Southern California, 90089-1453, Los Angeles, CA, USA aut NATIONALLICENCE 773 0- Journal of Materials Science Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com 42/5(2007-03-01), 1517-1528 0022-2461 42:5<1517 2007 42 10853 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer