Combined experimental and finite element approach for determining mechanical properties of aluminium alloys by nanoindentation.

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dc.contributor.authorKhan, MKen_AU
dc.contributor.authorHainsworth, SVen_AU
dc.contributor.authorFitzpatrick, MEen_AU
dc.contributor.authorEdwards, Len_AU
dc.date.accessioned2010-08-30T06:58:01Zen_AU
dc.date.available2010-08-30T06:58:01Zen_AU
dc.date.issued2010-10en_AU
dc.date.statistics2010-10en_AU
dc.description.abstractAluminium alloys for the aerospace industry are often clad by roll-bonded aluminium to improve corrosion resistance. The clad layer is of the order of 100 μm in thickness and it is difficult to determine the mechanical properties of this layer by conventional mechanical testing techniques. Nanoindentation is ideally suited to determining the elastic and plastic properties of such layers and here we report on a combined approach using experimental nanoindentation and finite element analysis to extract yield stress and strain hardening exponent for an Al-clad system. The approach used was calibrated against results for an Al 2024-T351 alloy, where conventional mechanical testing data was available. For the Al 2024-T351, a forward analysis was used for extraction of load–displacement curves at different indentation depths with the help of elastic–plastic properties obtained from tensile testing. For a 100 μm clad layer of pure aluminium on Al 2024-T351, reverse analysis was used for extraction of elastic–plastic properties from a single indentation test. A yield stress of 110–120 MPa and a value of 0.075–0.1 for the work hardening exponent was obtained for the Al cladding. Nanoindentation properties including maximum load of indentation, contact depth, area of contact and pile-up obtained from the forward and reverse analyses showed excellent agreement with the experimental results. © 2010, Elsevier Ltd.en_AU
dc.identifier.citationKhan, M. K., Hainsworth, S. V., Fitzpatrick, M. E., & Edwards, L. (2010). Combined experimental and finite element approach for determining mechanical properties of aluminium alloys by nanoindentation. Computational Materials Science, 49(4), 751-760. doi:10.1016/j.commatsci.2010.06.018en_AU
dc.identifier.govdoc2552en_AU
dc.identifier.issn0927-0256en_AU
dc.identifier.issue4en_AU
dc.identifier.journaltitleComputational Materials Scienceen_AU
dc.identifier.pagination751-760en_AU
dc.identifier.urihttp://dx.doi.org/10.1016/j.commatsci.2010.06.018en_AU
dc.identifier.urihttp://apo.ansto.gov.au/dspace/handle/10238/2378en_AU
dc.identifier.volume49en_AU
dc.language.isoenen_AU
dc.publisherElsevieren_AU
dc.subjectAluminium alloysen_AU
dc.subjectPlasticityen_AU
dc.subjectMechanical propertiesen_AU
dc.subjectCorrosion resistanceen_AU
dc.subjectCladdingen_AU
dc.subjectFinite element methoden_AU
dc.titleCombined experimental and finite element approach for determining mechanical properties of aluminium alloys by nanoindentation.en_AU
dc.typeJournal Articleen_AU
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