| Effect of DH treatment on microstructure and mechanical properties of an LM28-0.3wt.% Nd hypereutectic aluminum silicon alloy | |
| Alternative Title | Effect of DH treatment on microstructure and mechanical properties of an LM28-0.3wt.%Nd hypereutectic aluminum silicon alloy |
| Gao Bo; Chen Lei; Yu Fuxiao; Sun Shuchen; Tu Ganfeng | |
| 2007 | |
| Source Publication | RARE METALS
 |
| ISSN | 1001-0521 |
| Volume | 26Issue:6Pages:578-583 |
| Abstract | In this article, a novel heat treatment method, deformation heat (DH) treatment (extrusion + aging), was employed on a hypereutectic aluminum silicon alloy (LM28-0.3wt.%Nd), and its effect on microstructure and mechanical properties of this alloy was investigated. It can be concluded that the eutectic microstructure disappears after the DH treatment, in the meantime the morphology of alpha(Al) solid solution was transformed from fir-tree and cellular to equiaxed, Si was refined with grain sizes of about 1-10 mu m and distributed dispersedly, even some of them became globular shape, which can reduce stress accumulation effectively. Mechanical properties test indicated that the DH treatment could significantly improve the room-temperature strength and have little effect on the high-temperature strength of LM28-0.3wt.%Nd alloy. The fracture mechanism is ductile fracture by fracture morphology analysis. |
| Other Abstract | In this article, a novel heat treatment method, deformation heat (DH) treatment (extrusion + aging), was employed on a hypereutectic aluminum silicon alloy (LM28-0.3wt.%Nd), and its effect on microstructure and mechanical properties of this alloy was investigated. It can be concluded that the eutectic microstructure disappears after the DH treatment, in the meantime the morphology of α(Al) solid solution was transformed from fir-tree and cellular to equiaxed, Si was refined with grain sizes of about 1-10 μm and distributed dispersedly, even some of them became globular shape, which can reduce stress accumulation effectively. Mechanical properties test indicated that the DH treatment could significantly improve the room-temperature strength and have little effect on the high-temperature strength of LM28-0.3wt.%Nd alloy. The fracture mechanism is ductile fracture by fracture morphology analysis. |
| Keyword | AL-SI Al-Si alloys Nd deformation heat treatment mechanical properties |
| Indexed By | CSCD |
| Language | 英语 |
| CSCD ID | CSCD:3115311 |
| Citation statistics |
Cited Times:2[CSCD]
[CSCD Record]
|
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/144736 |
| Collection | 中国科学院金属研究所 |
| Affiliation | 中国科学院金属研究所 |
| Recommended Citation GB/T 7714 | Gao Bo,Chen Lei,Yu Fuxiao,et al. Effect of DH treatment on microstructure and mechanical properties of an LM28-0.3wt.% Nd hypereutectic aluminum silicon alloy[J]. RARE METALS,2007,26(6):578-583. |
| APA | Gao Bo,Chen Lei,Yu Fuxiao,Sun Shuchen,&Tu Ganfeng.(2007).Effect of DH treatment on microstructure and mechanical properties of an LM28-0.3wt.% Nd hypereutectic aluminum silicon alloy.RARE METALS,26(6),578-583. |
| MLA | Gao Bo,et al."Effect of DH treatment on microstructure and mechanical properties of an LM28-0.3wt.% Nd hypereutectic aluminum silicon alloy".RARE METALS 26.6(2007):578-583. |
| Files in This Item: | There are no files associated with this item. | |||||
Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.
Edit Comment