caa a22 4500 463231287 CHVBK 20180405153242.0 cr unu---uuuuu 170326e20070301xx s 000 0 eng 10.1007/s10853-006-0745-9 doi (NATIONALLICENCE)springer-10.1007/s10853-006-0745-9 Severe plastic deformation (SPD) and nanostructured materials by machining [Elektronische Daten] [Srinivasan Swaminathan, M. Ravi Shankar, Balkrishna Rao, W. Compton, Srinivasan Chandrasekar, Alexander King, Kevin Trumble] Large plastic strains between 1 and 15 can be imposed in chips formed by plane-strain (2-D) machining of metals and alloys. This approach has been used to examine microstructure changes induced by large strain deformation in model systems—copper and its alloys, precipitation-hardenable aluminum alloys, high-strength materials such as titanium, Inconel 718 and 52100 steel, and an amorphous alloy. It is shown that materials with average grain sizes in the range of 60nm-1μm can be created by varying the parameters of machining, which in turn affects the deformation processes. Furthermore, a switch-over from an elongated subgrain microstructure to an equi-axed nanocrystalline microstructure, with a preponderance of large-angle grain boundaries, has been demonstrated at the higher levels of strain in several of these materials. This switch-over can be readily controlled by varying the deformation conditions. Dynamic recrystallization has been demonstrated in select material systems under particular conditions of strain and temperature. This study may be seen as providing an important bridge between furthering the understanding of microstructural refinement by large strain deformation and the practical utilization of nanostructured materials in structural and mechanical applications. Conventional plane-strain machining has been shown to be a viable SPD method for examining the underlying processes of very large strain deformation. Springer Science+Business Media, LLC, 2006 Swaminathan Srinivasan Center for Materials Processing and Tribology, School of Industrial Engineering, Purdue University, 47907, West Lafayette, IN, USA aut Ravi Shankar M. Department of Industrial Engineering, University of Pittsburgh, 15261, Pittsburgh, PA, USA aut Rao Balkrishna Center for Materials Processing and Tribology, School of Industrial Engineering, Purdue University, 47907, West Lafayette, IN, USA aut Compton W. Center for Materials Processing and Tribology, School of Industrial Engineering, Purdue University, 47907, West Lafayette, IN, USA aut Chandrasekar Srinivasan Center for Materials Processing and Tribology, School of Industrial Engineering, Purdue University, 47907, West Lafayette, IN, USA aut King Alexander School of Materials Engineering, Purdue University, 47907, West Lafayette, IN, USA aut Trumble Kevin School of Materials Engineering, Purdue University, 47907, West Lafayette, IN, USA aut Journal of Materials Science Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com 42/5(2007-03-01), 1529-1541 0022-2461 42:5<1529 2007 42 10853 https://doi.org/10.1007/s10853-006-0745-9 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10853-006-0745-9 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Swaminathan Srinivasan Center for Materials Processing and Tribology, School of Industrial Engineering, Purdue University, 47907, West Lafayette, IN, USA aut NATIONALLICENCE 700 1- Ravi Shankar M. Department of Industrial Engineering, University of Pittsburgh, 15261, Pittsburgh, PA, USA aut NATIONALLICENCE 700 1- Rao Balkrishna Center for Materials Processing and Tribology, School of Industrial Engineering, Purdue University, 47907, West Lafayette, IN, USA aut NATIONALLICENCE 700 1- Compton W. Center for Materials Processing and Tribology, School of Industrial Engineering, Purdue University, 47907, West Lafayette, IN, USA aut NATIONALLICENCE 700 1- Chandrasekar Srinivasan Center for Materials Processing and Tribology, School of Industrial Engineering, Purdue University, 47907, West Lafayette, IN, USA aut NATIONALLICENCE 700 1- King Alexander School of Materials Engineering, Purdue University, 47907, West Lafayette, IN, USA aut NATIONALLICENCE 700 1- Trumble Kevin School of Materials Engineering, Purdue University, 47907, West Lafayette, IN, USA aut NATIONALLICENCE 773 0- Journal of Materials Science Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com 42/5(2007-03-01), 1529-1541 0022-2461 42:5<1529 2007 42 10853 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer