THE SOLIDIFICATION BEHAVIOR OF 8090 AL-LI ALLOY | |
Y. L. Liu ; Z. Q. Hu ; Y. Zhang ; C. X. Shi | |
刊名 | Metallurgical Transactions B-Process Metallurgy
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1993 | |
卷号 | 24期号:5页码:857-865 |
关键词 | fracture-behavior phase-equilibria cu alloys microstructure lithium zr |
ISSN号 | 0360-2141 |
中文摘要 | In this work, the solidification and segregation behaviors of 8090 Al-Li alloy have been investigated with differential thermal analysis (DTA) and the metallographic-electron microprobe method. The results show that 8090 Al-Li alloy has a much more complex solidification path than Al-Li binary alloy due to the addition of many alloying elements and the presence of impure elements. Solidification begins at about 635-degrees-C with the reaction of L --> alpha-Al + L', and this reaction goes on to termination. The alloying element Cu and impure elements Fe and Si have a strong segregation tendency. During solidification, Cu segregates to the interdendrite and finally forms alpha-Al + T2 eutectic. As a result, the solidification temperature range is greatly extended. Iron and Si form the insoluble constituents Al7Cu2Fe, AlLiSi, etc., although their concentrations in the alloy are quite low. With the increase of Fe content, there is a eutectic reaction of alpha-Al/Al3Fe at about 595-degrees-C. The formation of insoluble constituents is influenced by both concentrations of impure elements in the alloy and the cooling rate. |
原文出处 | |
公开日期 | 2012-04-14 |
内容类型 | 期刊论文 |
源URL | [http://ir.imr.ac.cn/handle/321006/39078] ![]() |
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 | Y. L. Liu,Z. Q. Hu,Y. Zhang,et al. THE SOLIDIFICATION BEHAVIOR OF 8090 AL-LI ALLOY[J]. Metallurgical Transactions B-Process Metallurgy,1993,24(5):857-865. |
APA | Y. L. Liu,Z. Q. Hu,Y. Zhang,&C. X. Shi.(1993).THE SOLIDIFICATION BEHAVIOR OF 8090 AL-LI ALLOY.Metallurgical Transactions B-Process Metallurgy,24(5),857-865. |
MLA | Y. L. Liu,et al."THE SOLIDIFICATION BEHAVIOR OF 8090 AL-LI ALLOY".Metallurgical Transactions B-Process Metallurgy 24.5(1993):857-865. |
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