Study of the Al-T-Si (T = Fe, Co, Ni) alloys in the solid, liquid and as-quenched states

Journal Article · Sun Apr 15 04:00:00 EDT 2018 · Materials Characterization

DOI:https://doi.org/10.1016/J.MATCHAR.2017.11.044· OSTI ID:22804934

Zigo, Juraj ^[1]; Roik, Oleksandr ^[2]; Peter, Svec ^[1]; Mihalkovic, Marek; Igor, Matko ^[1]

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1. Institute of Physics, Slovak Academy of Sciences, Dúbravská cesta 9, Bratislava 84511 (Slovakia)
2. National Taras Shevchenko University of Kyiv, 64/13 Volodymyrska Street, Kyiv 01601 (Ukraine)

Highlights: • Analysis of the formation and evolution of crystalline phases during heat-treatment of as-quenched alloys using in-situ high-temperature XRD. • XRD study and MD simulations of SRO in liquid and amorphous Al-T-Si (T = Fe, Co, Ni) alloys. • Similarity between the CSRO in amorphous Al{sub 65}T{sub 15}Si{sub 20} (T = Fe, Ni) alloys and crystalline Al{sub 9}Fe{sub 2}Si{sub 2} and Al{sub 3}Ni phases. - Abstract: Local atomic structure of liquid and amorphous Al{sub 80 − x}T{sub x}Si{sub 20} (where T = Fe, Co, Ni and x = 10, 15) alloys has been studied by X-ray diffraction (XRD) and molecular dynamics simulations. Chemical short-range order in the liquid and amorphous alloys has been found to be similar to that in the corresponding crystalline counterparts. Formation and evolution of crystalline phases during heat-treatment of the as-quenched ternary alloys up to liquid state were shown using in-situ XRD. Analysis of the morphology of the as-quenched and annealed Al-T-Si ribbons has been performed by transmission electron microscopy.

• OSTI ID: 22804934
• Journal Information: Materials Characterization, Journal Name: Materials Characterization Vol. 138; ISSN 1044-5803; ISSN MACHEX
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ALUMINIUM COMPOUNDS
ANNEALING
COBALT COMPOUNDS
COMPUTERIZED SIMULATION
IRON COMPOUNDS
MOLECULAR DYNAMICS METHOD
NICKEL COMPOUNDS
SOLIDS
TERNARY ALLOY SYSTEMS
TRANSMISSION ELECTRON MICROSCOPY
X-RAY DIFFRACTION