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Journal of Materials Engineering and Performance
Erschienen in: Journal of Materials Engineering and Performance 4/2014

01.04.2014

Effect of Al-5Ti-1B-1Re on the Microstructure and Hot Crack of As-Cast Al-Zn-Mg-Cu Alloy

verfasst von: H. J. Wang, J. Xu, Y. L. Kang, M. O. Tang, Z. F. Zhang

Erschienen in: Journal of Materials Engineering and Performance | Ausgabe 4/2014

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Abstract

High crack tendency is easy to occur during preparation of the castings and ingots of Al-Zn-Mg-Cu alloy, and it is most difficult to be solved due to the characteristics for the series alloy. As-cast microstructures and hot cracking tendency of Al-Zn-Mg-Cu alloy with different addition levels of Al-5Ti-1B-1Re were investigated in the paper. Moreover, solidification characteristics of the experimental alloys with different mass fractions of Al-5Ti-1B-1Re were analyzed, and the addition content of Al-5Ti-1B-1Re was optimized. These results indicate that the microstructure of the experimental alloys with Al-5Ti-1B-1Re refiner is fine obviously, the dendrite shape refined by Al-5Ti-1B-1Re becomes more globular, the grain boundary is smoother, and the SDAS is smaller compared with the alloy without Al-5Ti-1B-1Re. When the addition level of the grain refiner is less than 0.2%, the hot cracking tendency for the experimental alloy is reduced. The addition of 0.2% Al-5Ti-1B-1Re is best effective to improve the as-cast microstructures and hot cracking of Al-Zn-Mg-Cu alloy, and the best addition level of Al-5Ti-1B-1Re refiner is 0.2%.
Vorheriger Artikel Microstructure and Properties of SAE 2205 Stainless Steel After Salt Bath Nitrocarburizing at 450 °C
Nächster Artikel Effects of Micro and Macroalloying on the Formation and Thermal Stability of Nanocrystalline L12-Al3V

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Metadaten
Titel
Effect of Al-5Ti-1B-1Re on the Microstructure and Hot Crack of As-Cast Al-Zn-Mg-Cu Alloy
verfasst von
H. J. Wang
J. Xu
Y. L. Kang
M. O. Tang
Z. F. Zhang
Publikationsdatum
01.04.2014
Verlag
Springer US
Erschienen in
Journal of Materials Engineering and Performance / Ausgabe 4/2014
Print ISSN: 1059-9495
Elektronische ISSN: 1544-1024
DOI
https://doi.org/10.1007/s11665-013-0860-0

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