Modification Mechanism and Growth Process of Al₃(Sc, Zr) Particles in As-cast Al-Si-Mg-Cu-Zr-Sc Alloy

• Autorzy: Li Y. , Du X. , Fu J. , Zhang Y. , Zhang Z. , Zhou S. , Wu Y.

Identyfikatory

DOI

10.24425/122502

• Języki publikacji: EN

Abstrakty

EN

In this study, the modification mechanism and growth process of Al₃(Sc, Zr) particles in as-cast Al-Si-Mg-Cu based alloy with addition of Sc and Zr were systematically investigated. It was found that 0.57 wt-%Sc addition caused a significant refinement in the average grain size of the investigated alloy, which brought about a remarkable transformation in as-cast microstructure, from thick dendritic shape to fine equiaxed structure. A large amount of primary Al₃(Sc, Zr) particles with the dimension of around 5-6 μm were also observed within the equiaxed grain. Due to the identical orientation and similar crystal structure between primary Al₃(Sc, Zr) particles and α-Al matrix, the primary particles always served as heterogeneous nucleus for the α-Al matrix. In addition, these cusped cubic primary Al₃(Sc, Zr) particles showed triangle, star, rhomboid morphologies are generated from sectioning the particle in (111), (100) and (110) planes, respectively. Particularly, the typical eutectic structure which contained odd number-layer (Al₃(Sc, Zr)+α-Al+ ... +Al₃(Sc, Zr)) was observed within the investigated particles.

Słowa kluczowe

EN

solidification process; Al3(Sc, Zr); three-dimensional morphology; eutectic growth

PL

krzepnięcie stopu; Al3(Sc, Zr); morfologia trójwymiarowa; wzrost eutektyczny

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2018
• Tom: Vol. 18, iss. 2
• Strony: 51--56
• Opis fizyczny: Bibliogr. 23 poz., rys., tab., wykr.

Twórcy

autor

Li Y.

• Hefei University of Technology, School of Materials Science and Engineering, Hefei 230009, China

autor

Du X.

• Hefei University of Technology, School of Materials Science and Engineering, Hefei 230009, China

autor

Fu J.

• Hefei University of Technology, School of Materials Science and Engineering, Hefei 230009, China

autor

Zhang Y.

• Hefei University of Technology, School of Materials Science and Engineering, Hefei 230009, China

autor

Zhang Z.

• Hefei University of Technology, School of Materials Science and Engineering, Hefei 230009, China

autor

Zhou S.

• Hefei University of Technology, School of Materials Science and Engineering, Hefei 230009, China

autor

Wu Y.

• Hefei University of Technology, School of Materials Science and Engineering, Hefei 230009, China

Bibliografia

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Uwagi

PL

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2018).