Smola, Bohumil, Stulíková, Ivana, Žaludová, Nad'a, Hnilica, František, Janik, Vit and Očenášek, Vladivoj. (2009) Phase composition and morphology development in WE-type alloys modified by high Zn content. International Journal of Materials Research (formerly Zeitschrift fuer Metallkunde), Vol.100 (No.3). pp. 292-295. ISSN 1862-5282

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Abstract

Quasicrystalline icosahedral equilibrium phase was found in Mg-Y-Nd (WE43) alloys with the addition of 12 wt.% and 25 wt.% Zn constituting grain boundary eutectic phases. In response to the isochronal annealing, morphologically similar precipitates of phases with the same structure as those developing during heat treatment of binary Mg-8 wt.% Zn alloy at temperatures higher than 150 °C were observed, namely β01 (b-centered monoclinic crystal structure a = 2.596 nm, b = 1.428 nm, c = 0.524 nm, c = 102.5°) and b0 2 (hexagonal MgZn2). The evolution of the resistivity and microhardness during isochronal annealing corresponds to the phase transformations and the morphology changes of the phases observed. Dislocations with the c Burgers vector component generated due to the presence of icosahedral phase are responsible for the improved formability as compared to the WE43 alloy.

Item Type:	Journal Article
Subjects:	T Technology > TN Mining engineering. Metallurgy
Divisions:	Faculty of Science > WMG (Formerly the Warwick Manufacturing Group)
Journal or Publication Title:	International Journal of Materials Research (formerly Zeitschrift fuer Metallkunde)
Publisher:	Carl Hanser Verlag GmbH & Co. KG.
ISSN:	1862-5282
Date:	March 2009
Volume:	Vol.100
Number:	No.3
Page Range:	pp. 292-295
Identification Number:	10.3139/146.110021
Status:	Not Peer Reviewed
Publication Status:	Published
Access rights to Published version:	Restricted or Subscription Access
URI:	http://wrap.warwick.ac.uk/id/eprint/46940

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