Energy landscape of deformation twinning in bcc and fcc metals

Shigenobu Ogata,1,3,4,5 Ju Li,6 and Sidney Yip1,2,* 1Department of Nuclear Science and Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA 2Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA 3Handai Frontier Research Center, Osaka University, Osaka 565-0871, Japan 4Center for Atomic and Molecular Technologies, Osaka University, Osaka 565-0871, Japan 5Department of Mechanical Engineering, Osaka University, Osaka 565-0871, Japan 6Department of Materials Science and Engineering, Ohio State University, Columbus, Ohio 43210, USA sReceived 4 November 2004; revised manuscript received 10 February 2005; published 9 June 2005d