| Microhardness of bulk and higher density nanocrystalline copper obtained by hot compaction | |
| Sun, XC; Reglero, R; Sun, XK; Yacaman, MJ | |
| 2000-02-15 | |
| Source Publication | MATERIALS CHEMISTRY AND PHYSICS
 |
| ISSN | 0254-0584 |
| Volume | 63Issue:1Pages:82-87 |
| Abstract | Nanocrystalline copper (Cu) samples with relatively higher density (>98.5%) and smaller grain size (20-50 nm), have been prepared by gas-condensation technique with subsequent in-situ hot compaction using a novel consolidation device, it is found that Vickers microhardness of all as-synthesized nanocrystalline copper samples compacted under the different pressure (1.0-3.5 GPa) at 423 K (0.315T(m)) are greater than those of coarse grained Cu (50 mu m). No significant grain growth is observed. However, the hardness appears to increase with increasing grain size ranging from 20 +/- 0.12 nm to 23.8 +/- 0.12 nIn, in contrast, the normal Hall-Fetch relation between 70 +/- 0.15 nm and 50 +/- 0.15 nm under the same density are indicated. This complicated result is attributed to higher density, smaller grain size and internal microstrains of samples. (C) 2000 Elsevier Science S.A. All rights reserved. |
| Keyword | nanocrystalline microhardness Hall-Petch higher density |
| Indexed By | SCI |
| Language | 英语 |
| WOS Research Area | Materials Science |
| WOS Subject | Materials Science, Multidisciplinary |
| WOS ID | WOS:000084722200013 |
| Publisher | ELSEVIER SCIENCE SA |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/111253 |
| Collection | 中国科学院金属研究所 |
| Affiliation | Chinese Acad Sci, Met Res Inst, State Key Lab RSA, Shenyang 110015, Peoples R China |
| Recommended Citation GB/T 7714 | Sun, XC,Reglero, R,Sun, XK,et al. Microhardness of bulk and higher density nanocrystalline copper obtained by hot compaction[J]. MATERIALS CHEMISTRY AND PHYSICS,2000,63(1):82-87. |
| APA | Sun, XC,Reglero, R,Sun, XK,&Yacaman, MJ.(2000).Microhardness of bulk and higher density nanocrystalline copper obtained by hot compaction.MATERIALS CHEMISTRY AND PHYSICS,63(1),82-87. |
| MLA | Sun, XC,et al."Microhardness of bulk and higher density nanocrystalline copper obtained by hot compaction".MATERIALS CHEMISTRY AND PHYSICS 63.1(2000):82-87. |
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