Microstructure and compressive properties of chill-cast Mg-Al-Ca alloys
文献类型：期刊论文
| 作者 | L. L. Shi ; H. Ma ; T. Liu ; J. Xu ; E. Ma |
| 刊名 | Journal of Materials Research
 |
| 出版日期 | 2006 |
| 卷号 | 21期号:3页码:613-622 |
| 关键词 | bulk metallic-glass nanostructure-dendrite composite mechanical-properties amorphous-alloys forming ability thermal-stability phase-equilibria air atmosphere plasticity fabrication |
| ISSN号 | 0884-2914 |
| 中文摘要 | Mg(82)Al(8)Ca(10) was determined to be a pseudo-binary eutectic composition [liquid solidifying into alpha-Mg and (Mg,Al)(2)Ca in the Mg-Al-Ca ternary system with a eutectic melting temperature of 789 K]. A series of Mg(x)(Al(0.44)Ca(0.56))(100-x) alloys, where 75 <= x <= 95, were cast into Phi 4 mm rods using copper mold casting. The eutectic alloy exhibits the highest fracture strength, sigma(f) = 609 MPa. For 75 <= x <= 79, the alloys have hypereutectic microstructures with Mg(2)Ca as the primary phase, and a, is reduced together with diminishing plasticity. For hypoeutectic alloys with 86 <= x <= 95, the volume fraction of the primary alpha-Mg dendrites dispersed in the eutectic matrix increases with increasing x, resulting in a gradual decrease of the yield and fracture strengths but improved plastic strain to as large as 9%. The refined microstructures created in bulk samples via chill casting can lead to a good combination of strength and plasticity, with specific strength superior to commercial Mg alloys. |
| 原文出处 | |
| 公开日期 | 2012-04-14 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/34456]  |
| 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 | L. L. Shi,H. Ma,T. Liu,et al. Microstructure and compressive properties of chill-cast Mg-Al-Ca alloys[J]. Journal of Materials Research,2006,21(3):613-622. |
| APA | L. L. Shi,H. Ma,T. Liu,J. Xu,&E. Ma.(2006).Microstructure and compressive properties of chill-cast Mg-Al-Ca alloys.Journal of Materials Research,21(3),613-622. |
| MLA | L. L. Shi,et al."Microstructure and compressive properties of chill-cast Mg-Al-Ca alloys".Journal of Materials Research 21.3(2006):613-622. |
入库方式： OAI收割
来源：金属研究所
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