| The effect of heat treatment on tensile properties of the cold-compacted nano crystalline Al | |
| X. K. Sun; H. T. Cong; M. Sun; M. C. Yang | |
| 1999 | |
| Source Publication | Nanostructured Materials
 |
| ISSN | 0965-9773 |
| Volume | 11Issue:7Pages:917-923 |
| Abstract | The present work studied the effect of heat treatment on tensile properties of bulk nanocrystalline Al (nano-Al) cold-compacted from nano-Al powder. The nano-Al powder synthesized by the active H plasma evaporation was compacted under 1.42 GPa pressure at room temperature into disks with 25 mm diameter and 2 mm thickness. The cold-compacted disks were heat-treated at temperature range from 540 degrees C to 635 degrees C, then machined into the tensile specimens with 25 mm total length. The results indicated that the grain size of the cold-compacted nano-Al heat-heated at 635 degrees C is basically consistent with the primary powder. The tensile specimens heat-treated at temperatures lower than 600 degrees C are broken prematurely in the elastic deformation region during the tensile test process with a brittle intergranular fracture. The specimens heat-treated at temperatures higher than 600 degrees C give the complete stress-strain curves, the yield strengths sigma(0.2) and tensile strengths sigma(b) are 12-16 times and 5-6 times those of annealed coarse-grained Al respectively, the elongations-to-failure are all 4%, and the mechanism of failure is transgranular shear fracture with a ductile dimples fracture. (C) 1999 Acta Metallurgica Inc. |
| description.department | chinese acad sci, inst met res, state key lab rsa, shenyang 110015, peoples r china. china med univ, dept phys, shenyang 110001, peoples r china.;sun, xk (reprint author), chinese acad sci, inst met res, state key lab rsa, 72 wenhua rd, shenyang 110015, peoples r china |
| Keyword | Nanocrystalline Aluminum Mechanical-properties Melting Behavior Grain-size Palladium |
| URL | 查看原文 |
| WOS ID | WOS:000084281300012 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/37497 |
| Collection | 中国科学院金属研究所 |
| Recommended Citation GB/T 7714 | X. K. Sun,H. T. Cong,M. Sun,et al. The effect of heat treatment on tensile properties of the cold-compacted nano crystalline Al[J]. Nanostructured Materials,1999,11(7):917-923. |
| APA | X. K. Sun,H. T. Cong,M. Sun,&M. C. Yang.(1999).The effect of heat treatment on tensile properties of the cold-compacted nano crystalline Al.Nanostructured Materials,11(7),917-923. |
| MLA | X. K. Sun,et al."The effect of heat treatment on tensile properties of the cold-compacted nano crystalline Al".Nanostructured Materials 11.7(1999):917-923. |
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