A universal scaling of planar fault energy barriers in face-centered cubic metals

نویسندگان

  • Z. H. Jin
  • S. T. Dunham
  • H. Gleiter
  • H. Hahn
  • P. Gumbsch
چکیده

A universal scaling of planar fault energy barriers in face-centered cubic metals Z.H. Jin,a,b,⇑ S.T. Dunham, H. Gleiter, H. Hahn and P. Gumbsch School of Materials Science and Engineering, Shanghai Jiao Tong University, 200240 Shanghai, People’s Republic of China Institut für Nanotechnologie (INT), Karlsruher Institut für Technologie, 76021 Karlsruhe, Germany Department of Electrical Engineering, University of Washington, Seattle, WA 98195, USA Institut für Zuverlässigkeit von Bauteilen und Systemen (IZBS), Karlsruher Institut für Technologie, 76131 Karlsruhe, Germany Fraunhofer Institut für Werkstoffmechanik (IWM), 79108 Freiburg, Germany

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Stacking fault energy of face-centered cubic metals: thermodynamic and ab initio approaches.

The formation energy of the interface between face-centered cubic (fcc) and hexagonal close packed (hcp) structures is a key parameter in determining the stacking fault energy (SFE) of fcc metals and alloys using thermodynamic calculations. It is often assumed that the contribution of the planar fault energy to the SFE has the same order of magnitude as the bulk part, and thus the lack of preci...

متن کامل

Theory for plasticity of face-centered cubic metals.

The activation of plastic deformation mechanisms determines the mechanical behavior of crystalline materials. However, the complexity of plastic deformation and the lack of a unified theory of plasticity have seriously limited the exploration of the full capacity of metals. Current efforts to design high-strength structural materials in terms of stacking fault energy have not significantly redu...

متن کامل

Effect of stacking fault energy on mechanism of plastic deformation in nanotwinned FCC metals

Starting from a semi-empirical potential designed for Cu, we have developed a series of potentials that provide essentially constant values of all significant (calculated) materials properties except for the intrinsic stacking fault energy, which varies over a range that encompasses the lowest and highest values observed in nature. These potentials were employed in molecular dynamics (MD) simul...

متن کامل

Inverse grain-size effect on twinning in nanocrystalline Ni.

A long-standing controversy exists between molecular dynamics simulations and experiments on the twinning propensity of nanocrystalline (NC) face-centered-cubic metals. For example, three-dimensional molecular dynamics simulations rarely observed twins in NC Ni, whereas experiments readily observed them. Here this discrepancy is resolved by experimental observation of an inverse grain-size effe...

متن کامل

Nucleation of deformation twins in nanocrystalline face-centered-cubic metals processed by severe plastic deformation

Nanocrystalline nc materials are known to deform via mechanisms not accessible to their coarse-grained counterparts. For example, deformation twins and partial dislocations emitted from grain boundaries have been observed in nc Al and Cu synthesized by severe plastic deformation SPD . This paper further develops an earlier dislocation-based model on the nucleation of deformation twins in nc fac...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2011