Twinnability Predication for fcc Metals

Inherent twinnability of face-centered-cubic (fee) metals was analyzed based on the direct competition between twinning partial dislocation nucleation and trailing partial dislocation nucleation, with which the twinnability of fee metals can be simply expressed as function of the stacking-fault energy, the unstable stacking-fault energy, and the unstable twinning-fault energy of fee metals. The predicted twinnability ranking matched well with former experimental results and provided a physical insight to understand twinnability from crystallographic orientation and fault energy parameters.

[1]  G. Chin,et al.  On the variation of wire texture with stacking fault energy in f.c.c. metals and alloys , 1965 .

[2]  T. H. Blewitt,et al.  Low‐Temperature Deformation of Copper Single Crystals , 1957 .

[3]  H. Ye,et al.  Deformation structures in ball milled copper , 1996 .

[4]  H. Van Swygenhoven,et al.  Stacking fault energies and slip in nanocrystalline metals , 2004, Nature materials.

[5]  Xuemei Cheng,et al.  Deformation Twinning in Nanocrystalline Aluminum , 2003, Science.

[6]  D. He,et al.  Deformation twins in nanocrystalline Al , 2003 .

[7]  N. Bernstein,et al.  Tight-binding calculations of stacking energies and twinnability in fcc metals , 2004 .

[8]  Ellad B. Tadmor,et al.  A Peierls criterion for the onset of deformation twinning at a crack tip , 2003 .

[9]  Noam Bernstein,et al.  A first-principles measure for the twinnability of FCC metals , 2004 .

[10]  T. Mitchell,et al.  Deformation twinning in alloys at low temperatures , 1962 .

[11]  C. S. Barrett,et al.  Deformation twinning in silver-gold alloys , 1958 .

[12]  Sidney Yip,et al.  Energy landscape of deformation twinning in bcc and fcc metals , 2005 .

[13]  P. Haasen.  Plastic deformation of nickel single crystals at low temperatures , 1958 .

[14]  S. G. Srinivasan,et al.  Nucleation and growth of deformation twins in nanocrystalline aluminum , 2004 .

[15]  S. G. Srinivasan,et al.  Nucleation of deformation twins in nanocrystalline face-centered-cubic metals processed by severe plastic deformation , 2005 .

[16]  Shaoxing Qu,et al.  Rate dependence of crack-tip processes predicts twinning trends in f.c.c. metals. , 2007 .