Icosahedron-forming ability of MgZn alloys studied by molecular dynamics simulations
Icosahedron-forming ability of MgZn alloys studied by molecular dynamics simulations
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分子动力学模拟研究MgZn合金二十面体形成能力
DOI:
10.1016/j.jallcom.2017.01.046
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发表时间:
2017-04
影响因子:
6.2
通讯作者:
Quan Xie
中科院分区:
文献类型:
--
作者:
Ting-Hong Gao;Xiao-Tian Guo;Yun-Fei Mo;Quan Xie
A molecular dynamics simulation is performed to investigate the icosahedron in MgxZn(100-x)alloys during solidification at the cooling rate of 1 × 1011K/s. It is found that withxincrease the icosahedron-forming ability (IFA) of MgxZn(100-x)increases first, and then decrease asx> 50; and Mg90Zn10can crystallize at this cooling rate. Consistent with the geometry, the smaller Zn atoms are usually at the centre of icosahedra, and the maximal fraction of Mg atoms in neighbours of Zn-centred icosahedra is just the critical value with which such icosahedra get the highest packing density. Further analysis reveals that the stronger IFA of Zn-rich alloys is closely related to the forming ability of GE9IS-ICOs (clusters composed of more than 8 icosahedra that are interconnected by IS-linkages) that still grow at low temperatures where all other smaller icosahedral clusters stop grow.
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影响因子:
56.9
作者:
Zeng, Qiaoshi;Sheng, Hongwei;Mao, Ho-Kwang
通讯作者:
Mao, Ho-Kwang
DOI:
10.1021/jp301576f
发表时间:
2012-06
期刊:
The journal of physical chemistry. B
影响因子:
--
作者:
Z. Hou;Li-Xia Liu;Z. Tian;Rang-su Liu;Yu Shu;Jinguo Wang
通讯作者:
Z. Hou;Li-Xia Liu;Z. Tian;Rang-su Liu;Yu Shu;Jinguo Wang
DOI:
10.1088/0305-4608/16/3/010
发表时间:
1986-03
期刊:
Journal of Physics F: Metal Physics
影响因子:
--
作者:
D. H. Li;X. Li;S. Wang
通讯作者:
D. H. Li;X. Li;S. Wang
影响因子:
8.6
作者:
SHECHTMAN, D;BLECH, I;CAHN, JW
通讯作者:
CAHN, JW
影响因子:
9.4
作者:
M. Wakeda;Y. Shibutani
通讯作者:
M. Wakeda;Y. Shibutani