Effect of Al-5Ti-1B Grain Refiner Addition on the Formation of Intermetallic Compounds in Al-Mg-Si-Mn-Fe Alloys
| Autor: | Li Juan Liu, Zhong Ping Que, Y.P. Zhou, Yun Wang, Zhongyun Fan |
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| Rok vydání: | 2015 |
| Předmět: |
Materials science
Morphology (linguistics) Mechanical Engineering Metallurgy Alloy Analytical chemistry Intermetallic Nucleation engineering.material Condensed Matter Physics Mechanics of Materials Phase (matter) engineering General Materials Science Supercooling Refining (metallurgy) Eutectic system |
| Zdroj: | Materials Science Forum. :53-57 |
| ISSN: | 1662-9752 |
| DOI: | 10.4028/www.scientific.net/msf.828-829.53 |
| Popis: | The effect of Al-5Ti-1B grain refiner addition on solidification microstructure, especially the formation of the binary eutectic (Al)+Al15(Fe,Mn)3Si2was investigated in Al-5Mg-2Si-0.7Mn-1.1Fe (wt.%) alloy. The experimental results showed that the solidification microstructure were consisted of primary α-Al phase, inter dendritic binary eutectic (Al)+Al15(Fe,Mn)3Si2, and ternary eutectic (Al+Mg2Si+Al15(Fe,Mn)3Si2). The heterogeneous nucleation of the primary (Al) phase in the alloys was greatly enhanced by the Al-5Ti-1B grain refiner, refining the (Al) grains significantly. The subsequent binary eutectic was nucleated on these refined (Al) phase. Consequently, the size of Al15(Fe,Mn)3Si2phase with a Chinese script morphology in the binary eutectic was greatly refined, without much change in the secondary branch spacing. |
| Databáze: | OpenAIRE |
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