Determining strain in amorphous alloys: Uncertainties with analyzing structural changes during deformation

作者：Mendelev M I^*; Ott R T; Kramer M J; Sordelet D J

来源：Journal of Applied Physics, 2009, 105(2): 023509.

DOI：10.1063/1.3068306

• amorphous state
• deformation
• molecular dynamics method
• noncrystalline structure

Molecular dynamics simulations were utilized to test the reliability of strain values obtained from diffraction data for noncrystalline alloys. We found that in the case of a one-component system, the strain value obtained from the pair correlation functions underestimates the actual value because of a small degree of atomic relaxations, which minimize the effects of the applied deformation. In the case of multicomponent systems, the different pairs are affected by applied deformation to different extents; moreover, this implies that the strain value determined from diffraction data should depend on the type of scattering.

• 出版日期2009-1-15