| Nanocrystallization behaviour of a ternary amorphous alloy during isothermal annealing： a Monte Carlo simulation |
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| 引用本文： | 金士锋,王伟民,周建坤,国洪轩,J.F.We,边秀房.Nanocrystallization behaviour of a ternary amorphous alloy during isothermal annealing： a Monte Carlo simulation[J].中国物理 B,2005,14(12):2565-2574. |
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| 作者姓名： | 金士锋 王伟民 周建坤 国洪轩 J.F.We 边秀房 |
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| 作者单位： | The Key Laboratory of Liquid Structure and Heredity of Materials, Shandong University, Jinan 250061, China;The Key Laboratory of Liquid Structure and Heredity of Materials, Shandong University, Jinan 250061, China;The Key Laboratory of Liquid Structure and Heredity of Materials, Shandong University, Jinan 250061, China;The Key Laboratory of Liquid Structure and Heredity of Materials, Shandong University, Jinan 250061, China;School of Mechanical Engineering, Yeungnam University,214-1 Dae-dong, Gyeongsan, Gyeongbuk 712-749, Republic of Korea;The Key Laboratory of Liquid Structure and Heredity of Materials, Shandong University, Jinan 250061, China |
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| 基金项目： | Project supported by the National Natural Science Foundation of China (Grant Nos 50301008 and 50231040) and the Shandong Young Scientists Foundation. |
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| 摘 要： | The nanocrystallization behaviour of Zr70Cu20Ni10 metallic glass during isothermal annealing is studied by employing a Monte Carlo simulation incorporating with a modified Ising model and a Q-state Potts model. Based on the simulated microstructure and differential scanning calorimetry curves, we find that the low crystal-amorphous interface energy of Ni plays an important role in the nanocrystallization of primary Zr2Ni. It is found that when T〈T1max （where T1max is the temperature with maximum nucleation rate）, the increase of temperature results in a larger growth rate and a much finer mierostrueture for the primary Zr2Ni, which accords with the microstructure evolution in ＂flash annealing＂. Finally, the Zr2Ni/Zr2Cu interface energy σG contributes to the pinning effect of the primary nano-sized Zr2Ni grains in the later formed normal Zr2Cu grains.
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| 关 键 词： | 纳米晶 三重无定形合金 等温退火 蒙特卡罗模拟 |
| 收稿时间： | 2005-03-15 |
| 修稿时间： | 2005-03-152005-08-29 |
Nanocrystallization behaviour of a ternary amorphous alloy during isothermal annealing: a Monte Carlo simulation |
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| Jin Shi-Feng,Wang Wei-Min,Zhou Jian-Kun,Guo Hong-Xuan,Webb J. F. and Bian Xiu-Fang.Nanocrystallization behaviour of a ternary amorphous alloy during isothermal annealing: a Monte Carlo simulation[J].Chinese Physics B,2005,14(12):2565-2574. |
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| Authors: | Jin Shi-Feng Wang Wei-Min Zhou Jian-Kun Guo Hong-Xuan Webb J F and Bian Xiu-Fang |
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| Institution: | School of Mechanical Engineering, Yeungnam University,214-1 Dae-dong, Gyeongsan, Gyeongbuk 712-749, Republic of Korea; The Key Laboratory of Liquid Structure and Heredity of Materials, Shandong University, Jinan 250061, China |
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| Abstract: | The nanocrystallization behaviour of Zr$_{70}$Cu$_{20}$Ni$_{10}$ metallic
glass during isothermal annealing is studied by employing a Monte Carlo
simulation incorporating with a modified Ising model and a $Q$-state Potts
model. Based on the simulated microstructure and differential scanning
calorimetry curves, we find that the low crystal-amorphous interface energy
of Ni plays an important role in the nanocrystallization of primary
Zr$_{2}$Ni. It is found that when $T
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| Keywords: | nanocrystallization Monte Carlo simulation pinning effect Ising model |
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