Microstructural characterisation of Al - Hf and Al - Li - Hf spray deposits

Antipas, GSE; Lekakou, C; Tsakiropoulos, P

dc.contributor.author	Antipas, GSE	en
dc.contributor.author	Lekakou, C	en
dc.contributor.author	Tsakiropoulos, P	en
dc.date.accessioned	2014-03-01T02:02:57Z
dc.date.available	2014-03-01T02:02:57Z
dc.date.issued	2011	en
dc.identifier.issn	10445803	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/29330
dc.subject	Al - Li alloys	en
dc.subject	Alpha phase precipitate	en
dc.subject	Delta phase precipitate	en
dc.subject	Gas atomization	en
dc.subject	Grain size	en
dc.subject	Particle size	en
dc.subject	Scanning electron microscopy	en
dc.subject	Spray forming	en
dc.subject.other	Al-Li alloys	en
dc.subject.other	Alpha phase precipitate	en
dc.subject.other	Delta phase precipitate	en
dc.subject.other	Gas atomization	en
dc.subject.other	Grain size	en
dc.subject.other	Spray forming	en
dc.subject.other	Alloys	en
dc.subject.other	Atomization	en
dc.subject.other	Deposits	en
dc.subject.other	Grain size and shape	en
dc.subject.other	Hafnium	en
dc.subject.other	Lithium alloys	en
dc.subject.other	Microscopic examination	en
dc.subject.other	Particles (particulate matter)	en
dc.subject.other	Scanning electron microscopy	en
dc.subject.other	Spray steelmaking	en
dc.subject.other	Aluminum	en
dc.title	Microstructural characterisation of Al - Hf and Al - Li - Hf spray deposits	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/j.matchar.2011.02.001	en
heal.identifier.secondary	http://dx.doi.org/10.1016/j.matchar.2011.02.001	en
heal.publicationDate	2011	en
heal.abstract	Microscopic examination of an Al-1.6 wt.%Hf and an Al-3.2 wt.%Li-1.6 wt.%Hf spray formed alloys revealed high density near the center axis with high porosity present at the edges of the spray deposits. Spherical particles with an apparent diameter of up to 140 μm were found near the center axis of the spray while larger particles were deformed upon impact on the substrate. The particle (drop) size as well as the grain size was found to decrease with distance from the center of the preforms. The intermetallic phases observed in the center of both deposits were filamentary L12 - Al3Hf for the Al - Hf alloy and spherical/filamentary L12 - Al 3(Li,Hf) for the Al - Li - Hf alloy. © 2011 Elsevier Inc. All rights reserved.	en
heal.journalName	Materials Characterization	en
dc.identifier.doi	10.1016/j.matchar.2011.02.001	en
dc.identifier.volume	62	en
dc.identifier.issue	4	en
dc.identifier.spage	402	en
dc.identifier.epage	408	en