| Ni3Al合金中晶界与位错交互作用的研究 |
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| 引用本文： | 陈达,陆敏,林栋梁.Ni3Al合金中晶界与位错交互作用的研究[J].金属学报,1993,29(7):34-39. |
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| 作者姓名： | 陈达 陆敏 林栋梁 |
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| 作者单位： | 上海交通大学，上海交通大学，上海交通大学材料科学系 |
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| 摘 要： | 运用嵌入原子法势函数和静态驰豫最陡梯度的计算方法,原子模拟了Ni_3Al合金中晶界与位错的交互作用.主要研究了晶界与位错交互作用的能量特征、晶界结构单元的畸变行为和晶界附近位错的核心结构,并分析讨论了各种因素对它们的影响以及与Ni_3Al晶界韧脆行为之间的关系
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| 关 键 词： | 位错 金属互化物 晶粒间界 镍 铝 |
| 收稿时间： | 1993-07-18 |
| 修稿时间： | 1993-07-18 |
SIMULATIVE STUDY OF INTERACTION BETWEEN GRAIN BOUNDARIES AND DISLOCATIONS IN Ni_3Al |
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| CHEN Da,LU Min,LIN Dongliang Shanghai Jiao Tong University.SIMULATIVE STUDY OF INTERACTION BETWEEN GRAIN BOUNDARIES AND DISLOCATIONS IN Ni_3Al[J].Acta Metallurgica Sinica,1993,29(7):34-39. |
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| Authors: | CHEN Da LU Min LIN Dongliang Shanghai Jiao Tong University |
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| Abstract: | The embedded atom type potentials and static relaxation method combined
with a steepest decent computational technique have been used to simulate the interaction be-
tween the grain boundary and dislocations in Ni_3Al. The focus has been placed on the ener-
getic features of the interaction, the distortion of grain boundary structural units and the dis-
location core structures near the grain boundary. Implication has also been made on the re-
sults for understanding of the mechanism responsible for boron-enhanced ductility. |
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| Keywords: | Ni_3Al intermetallics grain boundary structure computer simulation dislocation core structure |
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