Effects of ionizing radiation and thermal cycling on tensile properties of extruded Mg-Zn-Y-Zr alloys containing quasicrystalline phase
文献类型：期刊论文
| 作者 | Z. H. Liu ; E. H. Han |
| 刊名 | Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing
 |
| 出版日期 | 2007 |
| 卷号 | 457期号:1-2页码:186-194 |
| 关键词 | M-Zn-Y-Zr alloys quasicrystalline phase tensile properties ionizing radiation thermal cycling cubic w-phase mechanical-properties icosahedral phase microstructure magnesium deformation particles |
| ISSN号 | 0921-5093 |
| 中文摘要 | Effects of ionizing radiation and thermal cycling simulated low-earth orbit (LEO) environments on tensile properties of three kinds of as-extruded Mg-Zn-Y-Zr alloys at room temperature have been studied for the first time. Results show that Alloy 2 containing 2.3% Y (wt.%) possesses the optimal tensile properties among the three kinds of alloys. Significant difference between the alloys performed ionizing radiation is in elongation which show increase after radiation in Alloy 3. This may result from combined effect of the grain growth and a possible transformation between W-phase and quasicrystalline phase during the radiation process. Similarly, there are possibly two kinds of opposing effects simultaneously operated on tensile properties of the alloys during the thermal cycling process. One is softening effect initiated at the interface between the second phases and alpha-Mg matrix. The other is strengthening effect of dislocations generated at the grain boundary and the precipitates and particles of the second phases. Therefore, there is a decrease in strength and ductility after 200 cycles but an increase after 500 cycles which could be due to an overriding effect of hardening during cycling over the softening effect. (C) 2006 Elsevier B.V. All rights reserved. |
| 原文出处 | |
| 公开日期 | 2012-04-13 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/33724]  |
| 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 | Z. H. Liu,E. H. Han. Effects of ionizing radiation and thermal cycling on tensile properties of extruded Mg-Zn-Y-Zr alloys containing quasicrystalline phase[J]. Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,2007,457(1-2):186-194. |
| APA | Z. H. Liu,&E. H. Han.(2007).Effects of ionizing radiation and thermal cycling on tensile properties of extruded Mg-Zn-Y-Zr alloys containing quasicrystalline phase.Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,457(1-2),186-194. |
| MLA | Z. H. Liu,et al."Effects of ionizing radiation and thermal cycling on tensile properties of extruded Mg-Zn-Y-Zr alloys containing quasicrystalline phase".Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing 457.1-2(2007):186-194. |
入库方式： OAI收割
来源：金属研究所
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