Physics
Scientific paper
Mar 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010njph...12c3011l&link_type=abstract
New Journal of Physics, Volume 12, Issue 3, pp. 033011 (2010).
Physics
2
Scientific paper
The dynamic behavior of the single-crystal Al under [001] uniaxial strain is simulated by classic molecular dynamics. The fcc-hcp structural transition is successfully observed when the loading pressure reaches about 90 GPa, and the reverse transition is also found with hysteresis. The mechanism and morphology evolution of both the forward and backward transitions are analyzed in detail. It is found in the process of the structural transition that the (010)fcc or (100)fcc planes transit into (0001)hcp planes, and the twins of the hcp phase along the (112)-plane appear, whose boundaries finally become along the (110)-plane. Besides, we find the twinning (along the (110)fcc planes) in the hcp phase prior to the back transition (hcp-fcc). Our simulations show the coexistence of fcc and hcp phases over a wide range of pressures, and finally, the phase transition is evaluated by using the radial distribution functions.
Duan Su-Qing
Li Lexin
Liang Jing-Qiu
Shao J. L.
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