@Article{cmes.2005.009.075,
AUTHOR = {R.  Matsumoto, M.  Nakagaki, A.  Nakatani, H.  Kitagawa},
TITLE = {Molecular-dynamics Study on Crack Growth Behavior Relevant to Crystal Nucleation in Amorphous Metal},
JOURNAL = {Computer Modeling in Engineering \& Sciences},
VOLUME = {9},
YEAR = {2005},
NUMBER = {1},
PAGES = {75--84},
URL = {http://www.techscience.com/CMES/v9n1/29754},
ISSN = {1526-1506},
ABSTRACT = {In this paper, the internal structure-changes around the crack-tip and the pertinent crack growth behavior in an amorphous metal were studied by a molecular dynamics (MD) simulation. In order to perform a large scale calculation, the domain decomposition method was used for parallel calculation. The Finnis-Sinclair potential for$\alpha$-iron was used to describe the interatomic potential. Computed results show that nano-scaled crystalline phase grows around the crack-tip. The distribution of deformation zones and deformation mechanism are significantly altered. While grains are relatively small, they are not deformed, and the most amorphous-crystal interfaces have a large strain for phase transition. The emission of dislocations from the near crack-tip is observed after the crystal phase covered the crack-tip surfaces. Although CTOD obtained from MD analysis agrees to Dugdale's model very well during the amorphous state, the crack opening behavior changes remarkably after the crystallization.},
DOI = {10.3970/cmes.2005.009.075}
}