| 引用本文： |
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刘奕新,李建勋,易杰,苏义勇,张丽娜.Al-Cu-(Si)-(Sc)-(Zr)合金时效初期微结构演化模拟分析[J].广西科学,2009,16(1):60-63. [点击复制]
- LIU Yi-xin,LI Jian-xun,YI Jie,SU Yi-yong,ZHANG Li-na.Microstructural Evolution of Al-Cu-(Si)-(Sc)-(Zr) Alloy[J].Guangxi Sciences,2009,16(1):60-63. [点击复制]
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| 摘要: |
| 运用蒙特卡罗方法计算模拟加入微合金元素Si,Sc和Zr的Al-Cu合金时效初期微结构的演化过程,分析微结构演化过程中溶质原子偏聚的特征及其与空位的相互作用,讨论Si,Sc,Zi与空位复合体的尺寸及空位周围原子的概率分布。结果表明,Sc原子与空位之间存在较强的相互吸引作用,使得合金中空位的可动性降低,Cu原子赖以扩散的空位急剧减少,从而导致Cu原子簇丛聚程度大幅度降低;微量的Si使Al-Cu-(Si)合金中的空位明显减少,而且Sc与空位的强烈相互作用也使得空位团簇化加剧。 |
| 关键词: 合金 铝铜合金 微结构演化 Monte-Carlo方法 |
| DOI： |
| 投稿时间：2008-09-15 |
| 基金项目:国家自然科学基金项目(50661001,50061001);广西科学基金项目(桂科自0832029,桂科基0639004)资助 |
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| Microstructural Evolution of Al-Cu-(Si)-(Sc)-(Zr) Alloy |
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LIU Yi-xin, LI Jian-xun, YI Jie, SU Yi-yong, ZHANG Li-na
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| (College of Physical Science and Technology, Guangxi University, Nanning, Guangxi, 530004, China) |
| Abstract: |
| The Monte-Carlo method was applied to simulate the effect of Si, Sc and Zr on micro-structural evolution of Al-Cu alloy.The character of solute atoms segregating in microstructure evolution and solute acting with vacancy were analyzed;the Si, Sc and Zr atoms interaction with vacancy composite and the possibility of vacancy with atoms surrounding were discussed, and the mechanism of vacancy exerting were revealed. |
| Key words: alloy Al-Cu alloys micro-structural evolution Monte-Carlo method |
