Significance of stacking fault energy on microstructural evolution in Cu and Cu-Al alloys processed by high-pressure torsion
文献类型：期刊论文
| 作者 | X. H. An ; Q. Y. Lin ; S. D. Wu ; Z. F. Zhang ; R. B. Figueiredo ; N. Gao ; T. G. Langdon |
| 刊名 | Philosophical Magazine
 |
| 出版日期 | 2011 |
| 卷号 | 91期号:25页码:3307-3326 |
| 关键词 | copper Cu-Al alloys stacking fault energy high-pressure torsion hardness homogeneity severe plastic-deformation centered-cubic metals grain-refinement mechanical-properties nanostructure formation structural refinement aluminum-alloy shear strain pure metals copper |
| ISSN号 | 1478-6435 |
| 中文摘要 | Disks of pure Cu and several Cu-Al alloys were processed by high-pressure torsion (HPT) at room temperature through different numbers of turns to systematically investigate the influence of the stacking fault energy (SFE) on the evolution of microstructural homogeneity. The results show there is initially an inhomogeneous microhardness distribution but this inhomogneity decreases with increasing numbers of turns and the saturation microhardness increases with increasing Al concentration. Uniform microstructures are more readily achieved in materials with high or low SFE than in materials with medium SFE, because there are different mechanisms governing the microstructural evolution. Specifically, recovery processes are dominant in high or medium SFE materials, whereas twin fragmentation is dominant in materials having low SFE. The limiting minimum grain size (d(min)) of metals processed by HPT decreases with decreasing SFE and there is additional evidence suggesting that the dependence of d(min) on the SFE decreases when the severity of the external loading conditions is increased. |
| 原文出处 | |
| 公开日期 | 2012-04-13 |
| 源URL | [http://210.72.142.130/handle/321006/30236]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 推荐引用方式 GB/T 7714 | X. H. An,Q. Y. Lin,S. D. Wu,et al. Significance of stacking fault energy on microstructural evolution in Cu and Cu-Al alloys processed by high-pressure torsion[J]. Philosophical Magazine,2011,91(25):3307-3326. |
| APA | X. H. An.,Q. Y. Lin.,S. D. Wu.,Z. F. Zhang.,R. B. Figueiredo.,...&T. G. Langdon.(2011).Significance of stacking fault energy on microstructural evolution in Cu and Cu-Al alloys processed by high-pressure torsion.Philosophical Magazine,91(25),3307-3326. |
| MLA | X. H. An,et al."Significance of stacking fault energy on microstructural evolution in Cu and Cu-Al alloys processed by high-pressure torsion".Philosophical Magazine 91.25(2011):3307-3326. |
入库方式： OAI收割
来源：金属研究所
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