| 纳米晶体材料的Hall—Petch关系 |
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| 引用本文： | 卢柯,刘学东,胡壮麒. 纳米晶体材料的Hall—Petch关系[J]. 材料研究学报, 1994, 8(5): 385-391 |
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| 作者姓名： | 卢柯 刘学东 胡壮麒 |
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| 作者单位： | 中国科学院金属研究所快速凝固非平衡合金国家重点实验室 |
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| 基金项目： | 国家自然科学基金;;中国科学院院长基金;;留学择优支持基金 |
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| 摘 要： | 本文综述了纳米晶体材料力学性能如屈服应力，显微硬度的研究，尤其是偏离正常Ｈａｌｌ－Ｐｅｔｃｈ关系的现象及几种解释这种反常效应的模型，分析表明：纳米晶体材料的强度或硬度取决于材料的界面缺陷结构，界面过剩能与过剩体积。
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| 关 键 词： | 纳米晶体材料 显微硬度 界面 |
| 收稿时间： | 1994-10-25 |
| 修稿时间： | 1994-10-25 |
THE HALL-PETCH RELATION IN NANOCRYSTALLINE MATERIALS |
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| LU Ke,LIU Xuedong,HU Zhuangqi. THE HALL-PETCH RELATION IN NANOCRYSTALLINE MATERIALS[J]. Chinese Journal of Materials Research, 1994, 8(5): 385-391 |
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| Authors: | LU Ke LIU Xuedong HU Zhuangqi |
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| Affiliation: | LU Ke,LIU Xuedong,HU Zhuangqi (National Key Laboratory for RSA,Institute of Metal Reseurch,Academia Sinica) |
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| Abstract: | In view of the investigation on the mechanical properties, such as yield stress, microhardness,especially of the phenomenon that the above properties deviate from the normal Hall-Petch relation, several interpretations concerning this abnormal effect were reviewed in this paper. It was indicated that the strength or hardness of nanocrystalline materials depends on the interfacial defective structure, the interfacial excess energy and the interfacial excess free volume. |
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| Keywords: | nanocrystalline material Hall-Petch relation microhardness interface boundary |
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