Nanomechanical properties of friction stir welded AA6082-T6 aluminum alloy

Koumoulos, EP; Charitidis, CA; Daniolos, NM; Pantelis, DI

dc.contributor.author	Koumoulos, EP	en
dc.contributor.author	Charitidis, CA	en
dc.contributor.author	Daniolos, NM	en
dc.contributor.author	Pantelis, DI	en
dc.date.accessioned	2014-03-01T02:47:25Z
dc.date.available	2014-03-01T02:47:25Z
dc.date.issued	2011	en
dc.identifier.issn	0921-5107	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/33133
dc.subject	Aluminum alloy	en
dc.subject	Elastic modulus	en
dc.subject	Friction stir welding	en
dc.subject	Nanohardness	en
dc.subject	Nanoindentation	en
dc.subject	Plasticity	en
dc.subject.classification	Materials Science, Multidisciplinary	en
dc.subject.classification	Physics, Condensed Matter	en
dc.subject.other	Friction stir	en
dc.subject.other	Industry applications	en
dc.subject.other	Light weight alloys	en
dc.subject.other	Load-displacement curve	en
dc.subject.other	Low loading	en
dc.subject.other	Marine industry	en
dc.subject.other	Metallic alloys	en
dc.subject.other	Nanomechanical property	en
dc.subject.other	Phase transformation	en
dc.subject.other	Pile-ups	en
dc.subject.other	Slope change	en
dc.subject.other	Solid-state welding process	en
dc.subject.other	Surface hardness	en
dc.subject.other	Weld nuggets	en
dc.subject.other	Welding process	en
dc.subject.other	Welding zones	en
dc.subject.other	Aluminum	en
dc.subject.other	Aluminum alloys	en
dc.subject.other	Aluminum metallurgy	en
dc.subject.other	Cerium alloys	en
dc.subject.other	Dynamic recrystallization	en
dc.subject.other	Elastic moduli	en
dc.subject.other	Electric welding	en
dc.subject.other	Friction	en
dc.subject.other	Gas welding	en
dc.subject.other	Industrial applications	en
dc.subject.other	Nanohardness	en
dc.subject.other	Nanoindentation	en
dc.subject.other	Optical microscopy	en
dc.subject.other	Phase transitions	en
dc.subject.other	Tribology	en
dc.subject.other	Friction stir welding	en
dc.title	Nanomechanical properties of friction stir welded AA6082-T6 aluminum alloy	en
heal.type	conferenceItem	en
heal.identifier.primary	10.1016/j.mseb.2011.01.015	en
heal.identifier.secondary	http://dx.doi.org/10.1016/j.mseb.2011.01.015	en
heal.language	English	en
heal.publicationDate	2011	en
heal.abstract	Lightweight alloys are of major concern, due to their functionality and applications in transport and industry applications. Friction stir welding (FSW) is a solid-state welding process for joining aluminum and other metallic alloys and has been employed in aerospace, rail, automotive and marine industries. Compared to the conventional welding techniques, FSW produces joints which do not exhibit defects caused by melting. The objective of the present study is to investigate the surface hardness (H) and elastic modulus (E) in friction stir welded aluminum alloy AA6082-T6. The findings of the present study reveal that the welding process softens the material, since the weld nugget is the region where the most deformations are recorded (dynamic recrystallization, production of an extremely fine, equiaxial structure), confirmed by optical microscopy and reduced nanomechanical properties in the welding zone. A yield-type pop-in occurs upon low loading and represents the start of phase transformation, which is monitored through a gradual slope change of the load-displacement curve. Significant pile-up is recorded during nanoindentation of the alloy through SPM imaging. (C) 2011 Elsevier B.V. All rights reserved.	en
heal.publisher	ELSEVIER SCIENCE BV	en
heal.journalName	Materials Science and Engineering B: Solid-State Materials for Advanced Technology	en
dc.identifier.doi	10.1016/j.mseb.2011.01.015	en
dc.identifier.isi	ISI:000297615400009	en
dc.identifier.volume	176	en
dc.identifier.issue	19	en
dc.identifier.spage	1585	en
dc.identifier.epage	1589	en