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A Study of Phase Transformations in Complex Metallic Alloys Al73Mn23Pd4 and Al73Mn21Pd6

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Abstract:

The microstructure characterization of Al73Mn23Pd4 and Al73Mn21Pd6 alloys was done after annealing at 900°C for 312 h and subsequent water quenching, as well as after thermal cycling. DTA and EDX/WDX/SEM techniques were used in the investigation. It was found out that the alloys consist of the single ternary T-phase after annealing and water quenching. The DTA experiment confirmed the stability of this phase also at lower temperatures. After DTA, the alloys exhibited double-phase microstructure consisting of the ternary T-phase and probably the icosahedral I-phase. It was proved an incongruent transformation of the ternary T-phase into the liquid and vice versa.

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Periodical:

Key Engineering Materials (Volume 465)

Pages:

302-305

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.465.302

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Cite this paper

Online since:

January 2011

Authors:

Pavol Priputen, Ivona Černičková, Martin Kusý, Emília Illeková, Peter Svec, Jiří Buršík, Milan Svoboda, Jani Dolinšek, Jozef Janovec

Keywords:

Differential Thermal Analysis (DTA), Phase Transformation, Scanning Electron Microscope (SEM), Ternary Alloy System

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© 2011 Trans Tech Publications Ltd. All Rights Reserved

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