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Multi layered Steel to achieve Ultrahigh Strength and Ductility

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					                             Multi-layered Steel to achieve Ultrahigh Strength and Ductility
                         Program Member: T.Koseki (Dept. Materials Eng.), Affiliated Members: J.Inoue and S.Nambu


Multi-layered steel is developed to achieve the combinations of ultrahigh strength and high ductility, that have
never achieved by conventional steels by controlling interface strength, microstructure and properties of each
layer and layer design.

   Control of interface strength                            Control of properties and layer design                   Strength-ductility combinations

                                                 S. Nambu                                             J. Inoue

                                                                                                                                                  Target
                                                                                                                                                  TS>1200MPa,
                                                                                                                                                  EL>20%
                                                                                                                                         X2


                                                                                                                                                  X3




 S. Nambu et al., Composites Sci. Technol.,
 69 (2009), 1936                                                        J. Inoue, et al., Scripta Mater., 59
                                                                        (2008) 1055
  Analysis and simulation of interface
                                                            Formability and deformation analysis

                                              E. Abe
                                                                                             J. Yanagimoto
                                          T. Suzuki

                                          Y. Shibuta                                                             Reliability analysis
                                                                                                                                                M. Enoki


                                                                                                                                              S. Sedlak et al.,
                                                                                                                                              Ultrasonics, 49
                                                                                                                                              (2009) 254

                              Y. Shibuta et al., Computational
                              Materials Science, 44 (2009) 1025       T. Ohya et al,Kinzoku 80 (2010) 299

				
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posted:4/30/2011
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