采用电化学沉积法,在Cu基片上制备出了平均晶粒尺寸为3 nm的纳米晶a-Mn.通过对其在不同温度下真空退火,得到具有不同平均晶粒尺寸的纳米晶a-Mn系列样品.同时分析了电沉积、热处理条件对结构的影响,研究了结构与力学性能的关系.结果表明,随晶粒尺寸的减小,纳米晶a-Mn的力学性能表现出正Hall-Petch关系和反Hall-Petch关系;当晶粒小于临界晶粒尺寸42 nm时,正Hall-Petch关系转变为反Hall-Petch关系.
参考文献
| [1] | Hall E O .[J].Proceedings of Physical Society:B,1951,64:747. |
| [2] | Petch N J .[J].J Iron Steel lnst,1953,174:25. |
| [3] | 卢柯,卢磊.金属纳米材料力学性能的研究进展[J].金属学报,2000(08):785-789. |
| [4] | Jang J S C;Koch C C .[J].Scripta Metallurgica et Materialia,1990,24(08):1599. |
| [5] | Chokshi A H et al.[J].Scripta Metallurgica et Materialia,1989,23(10):1679. |
| [6] | Lu K et al.[J].Scripta Metallurgica et Materialia,1990,24(12):2319. |
| [7] | Liu X D et al.[J].Materials Science and Engineering A:Structural Materials Properties Microstructure and Processing,1993,169(1-2):L17. |
| [8] | Chang H et al.[J].Journal of Materials Research,1992,7(11):2962. |
| [9] | 卢柯 et al.[J].材料研究学报,1994,8(05):385. |
| [10] | Suryanarayana C et al.[J].Journal of Materials Research,1992,7(08):2114. |
| [11] | Bollman W .[J].Philosophical Magazine A:Physics of Condensed Matter Defects and Mechanical Properties,1984,49(01):73. |
| [12] | Bollman W .[J].Philosophical Magazine A:Physics of Condensed Matter Defects and Mechanical Properties,1988,57(04):637. |
| [13] | Siegel R W.Physics of New Materials[M].Heidelberg:Springer-Verlog,1994:66. |
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