Morphology and Thermal Stability of Metastable Precipitates Formed in an Al-Mg Alloy Aged at 373K and 473K

The present work has investigated precipitation behavior in an Al-17at%Mg alloy isothermally aged at 373K and 473K, by means of Vickers micro-hardness tests, DSC measurements and TEM observations. The present DSC measurements have revealed that the metastable β′-phase precipitates mainly contributed...

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Veröffentlicht in:	Applied mechanics and materials 2015-10, Vol.799-800 (Mechanical and Electrical Technology VII), p.212-216
Hauptverfasser:	Watanabe, Ryota, Fukui, Koichiro, Takeda, Mahoto
Format:	Artikel
Sprache:	eng
Schlagworte:	Aging (metallurgy) Aluminum Aluminum base alloys Microhardness Precipitates Precipitation Precipitation hardening Transmission electron microscopy
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Beschreibung
Zusammenfassung:	The present work has investigated precipitation behavior in an Al-17at%Mg alloy isothermally aged at 373K and 473K, by means of Vickers micro-hardness tests, DSC measurements and TEM observations. The present DSC measurements have revealed that the metastable β′-phase precipitates mainly contributed to precipitation hardening of this alloy in isothermal aging at 373K and 473K. The TEM observations have confirmed that the β ' phase precipitates were formed in the {001} planes of Al matrices in platelet shapes.
ISSN:	1660-9336 1662-7482 1662-7482
DOI:	10.4028/www.scientific.net/AMM.799-800.212