37
views
0
recommends
+1 Recommend
0 collections
    2
    shares
      • Record: found
      • Abstract: found
      • Article: not found

      Ab initio-guided design of twinning-induced plasticity steels

      Read this article at

      ScienceOpenPublisher
      Bookmark
          There is no author summary for this article yet. Authors can add summaries to their articles on ScienceOpen to make them more accessible to a non-specialist audience.

          Abstract

          Abstract

          The twinning-induced plasticity effect enables designing austenitic Fe-Mn-C-based steels with >70% elongation with an ultimate tensile strength >1 GPa. These steels are characterized by high strain hardening due to the formation of twins and complex dislocation substructures that dynamically reduce the dislocation mean free path. Both mechanisms are governed by the stacking-fault energy (SFE) that depends on composition. This connection between composition and substructure renders these steels ideal model materials for theory-based alloy design: Ab initio-guided composition adjustment is used to tune the SFE, and thus, the strain-hardening behavior for promoting the onset of twinning at intermediate deformation levels where the strain-hardening capacity provided by the dislocation substructure is exhausted. We present thermodynamic simulations and their use in constitutive models, as well as electron microscopy and combinatorial methods that enable validation of the strain-hardening mechanisms.

          Related collections

          Most cited references48

          • Record: found
          • Abstract: not found
          • Article: not found

          Deformation twinning

            Bookmark
            • Record: found
            • Abstract: not found
            • Article: not found

            Overview of constitutive laws, kinematics, homogenization and multiscale methods in crystal plasticity finite-element modeling: Theory, experiments, applications

              Bookmark
              • Record: found
              • Abstract: not found
              • Article: not found

              High manganese austenitic twinning induced plasticity steels: A review of the microstructure properties relationships

                Bookmark

                Author and article information

                Journal
                applab
                MRS Bulletin
                MRS Bull.
                Cambridge University Press (CUP)
                0883-7694
                1938-1425
                April 2016
                April 6 2016
                April 2016
                : 41
                : 04
                : 320-325
                Article
                10.1557/mrs.2016.63
                ead71f92-f913-4236-b702-6f54d52ed548
                © 2016
                History

                Comments

                Comment on this article