Engineering twin boundaries at the nanometer scale is regarded as an effective approach to achieve high strength while maintaining a substantial work-hardening ability. In this paper, the effects of twin thickness, grain size as well as strain rate on the work-hardening behavior of polycrystalline pure Cu with nanoscale twins are analyzed. The contribution of four possible work-hardening components (Types I-TV) to the hardening and softening process of nanotwinned Cu is also discussed. (C) 2012 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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[lu, l.; you, z. s.; lu, k.] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china.;lu, l (reprint author), chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china.;llu@imr.ac.cn
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