the cyclic deformation behavior of severe plastic deformation (spd) metals and the influential factors严重塑性变形的循环变形行为(spd)金属和影响因素.pdfVIP

Metals 2012, 2, 41-55; doi:10.3390/met2010041 OPEN ACCESS metals ISSN 2075-4701 /journal/metals/ Review The Cyclic Deformation Behavior of Severe Plastic Deformation (SPD) Metals and the Influential Factors Charles C. F. Kwan and Zhirui Wang * Department of Materials Science and Engineering, Faculty of Applied Science and Engineering, University of Toronto, 184 College Street, Toronto, Ontario M5S 3E4, Canada; E-Mail: charles.kwan@utoronto.ca * Author to whom correspondence should be addressed; E-Mail: zhirui.wang@utoronto.ca; Tel.: +1-416-978-4412; Fax: +1-416-978-4155. Received: 19 November 2011; in revised form: 6 December 2011 / Accepted: 27 January 2012 / Published: 1 February 2012 Abstract: A deeper understanding of the mechanical behavior of ultra-fine (UF) and nanocrystalline (NC) grained metals is necessary with the growing interest in using UF and NC grained metals for structural applications. The cyclic deformation response and behavior of UF and NC grained metals is one aspect that has been gaining momentum as a major research topic for the past ten years. Severe Plastic Deformation (SPD) materials are often in the spotlight for cyclic deformation studies as they are usually in the form of bulk work pieces and have UF and NC grains. Some well known techniques in the category of SPD processing are High Pressure Torsion (HPT), Equal Channel Angular Pressing (ECAP), and Accumulative Roll-Bonding (ARB). In this report, the literature on the cyclic deformation r