Journal
JOURNAL OF ALLOYS AND COMPOUNDS
Volume 881, Issue -, Pages -Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2021.160583
Keywords
Al-Mg2S alloys; Equal-channel angular pressing; Aging; Microhardness; Electrical properties; Thermal analysis; Microstructure
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Funding
- [075-00328-21-00]
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Effects of equal-channel angular pressing (ECAP) with subsequent aging on the microstructure and phase transformation of Al-Mg2Si alloys with combined (Sc + Zr) and (Sc + Hf) additions were studied. The microstructure processed by ECAP and the precipitation of phases of Al-Mg2Si alloys were thoroughly examined by transmission electron microscopy (TEM). It has been revealed that transition metals added to Al-Mg2Si alloys do not change the character of decomposition of the solid solution but shift the precipitation temperatures of the beta, beta' and beta phases to lower temperatures compared to the quenched state. Recovery processes have been revealed in the temperature range 200-600 degrees C based on the changes in hardness and electrical resistivity of Al-Mg2Si alloys with additions of transition metals (Sc + Zr) and (Sc + Hf) and without them after ECAP.
Effects of equal-channel angular pressing (ECAP) with subsequent aging on the microstructure and phase transformation of Al-Mg2Si alloys with combined (Sc + Zr) and (Sc + Hf) additions were studied. The microstructure processed by ECAP and the precipitation of phases of Al-Mg2Si alloys were thoroughly examined by transmission electron microscopy (TEM). An analysis of the precipitation and determination of the temperatures of these precipitations in Al-Mg2Si alloys after ECAP was carried out by DSC. It has been revealed that transition metals added to Al-Mg2Si alloys do not change the character of decomposition of the solid solution but shift the precipitation temperatures of the beta, beta' and beta phases to lower temperatures compared to the quenched state. Recovery processes have been revealed in the temperature range 200-600 degrees C based on the changes in hardness and electrical resistivity of Al-Mg2Si alloys with additions of transition metals (Sc + Zr) and (Sc + Hf) and without them after ECAP. (c) 2021 Elsevier B.V. All rights reserved.
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