Physics – Condensed Matter – Materials Science
Scientific paper
2009-09-08
Physics
Condensed Matter
Materials Science
6 pages, 8 figures
Scientific paper
Molecular dynamics simulations are performed to investigate the structural phase transition in body-centered cubic (bcc) single crystal iron under high strain rate loading. We study the nucleation and growth of the hexagonal-close-packed (hcp) and face-centered-cubic (fcc) phases, and their crystal orientation dependence. Results reveal that the transition pressures are less dependent on the crystal orientations ($\mathtt{\sim}$14 GPa for loading along [001], [011], and [111] directions). However, the pressure interval of mixed phase for [011] loading is much shorter than loading along other orientations. And the temperature increased amplitude for [001] loading is evidently lower than other orientations. The hcp/fcc nucleation process is presented by the topological medium-range-order analysis. For loading along [001] direction, we find that the hcp structure occurs firstly and grows into laminar morphology in the (011)$_{\text{bcc}}$ planes with a little fcc atoms as intermediate structure. For loading along [011] and [111] directions, both the hcp and fcc structures nucleation and growth along the \{110\}$_{\text{bcc}}$ planes are observed, whose morphology is also discussed.
Li Weidong
Shao Jianli
Wang Baotian
Zhang Guangcai
Zhang Ping
No associations
LandOfFree
Molecular dynamics study of hcp/fcc nucleation and growth in bcc iron driven by uniaxial strain does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Molecular dynamics study of hcp/fcc nucleation and growth in bcc iron driven by uniaxial strain, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Molecular dynamics study of hcp/fcc nucleation and growth in bcc iron driven by uniaxial strain will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-107799