About: Comparison of nanoindentation techniques for local mechanical quantification of aluminium alloy

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	Nanoindentation is widely used for the assessment of micromechanical behaviour of multiple phases within the material microstructure. Structural materials typically exhibit large variations in elastic modulus and hardness with increasing indentation depth during depth-sensing indentation experiments because the measured stiffness response is affected by its heterogeneity. In this study, the complicated microstructure of heterogeneous aluminium foam cell walls is described and related micromechanical analyses using various characterization modes performed. The paper compares the results of several nanoindentation approaches for the assessment of hardness and elastic parameters using both the quasi-static indentation and the dynamic modulus mapping method. The results of quasi-static indentation were performed for two different indenter geometries (Berkovich and spherical tips). The material phase properties were analysed with grid indentation method based on statistical evaluation of a large number of indentations (statistical deconvolution technique) as well as with isolated indentations by spherical indenter that revealed overall properties of the foam cell wall. Special attention was paid to the volume affected by the indenter and other factors influencing reliable evaluation of nanoindentation measurements. Intrinsic properties of the individual phases were also verified with modulus mapping technique. Results from the dynamic measurements were consistent with the values obtained in quasi-static measurements using the Berkovich indenter for both main microstructural phases. Nanoindentation is widely used for the assessment of micromechanical behaviour of multiple phases within the material microstructure. Structural materials typically exhibit large variations in elastic modulus and hardness with increasing indentation depth during depth-sensing indentation experiments because the measured stiffness response is affected by its heterogeneity. In this study, the complicated microstructure of heterogeneous aluminium foam cell walls is described and related micromechanical analyses using various characterization modes performed. The paper compares the results of several nanoindentation approaches for the assessment of hardness and elastic parameters using both the quasi-static indentation and the dynamic modulus mapping method. The results of quasi-static indentation were performed for two different indenter geometries (Berkovich and spherical tips). The material phase properties were analysed with grid indentation method based on statistical evaluation of a large number of indentations (statistical deconvolution technique) as well as with isolated indentations by spherical indenter that revealed overall properties of the foam cell wall. Special attention was paid to the volume affected by the indenter and other factors influencing reliable evaluation of nanoindentation measurements. Intrinsic properties of the individual phases were also verified with modulus mapping technique. Results from the dynamic measurements were consistent with the values obtained in quasi-static measurements using the Berkovich indenter for both main microstructural phases. (en)
Title	Comparison of nanoindentation techniques for local mechanical quantification of aluminium alloy Comparison of nanoindentation techniques for local mechanical quantification of aluminium alloy (en)
skos:prefLabel	Comparison of nanoindentation techniques for local mechanical quantification of aluminium alloy Comparison of nanoindentation techniques for local mechanical quantification of aluminium alloy (en)
skos:notation	RIV/68407700:21110/14:00220518!RIV15-MSM-21110___
http://linked.open...avai/riv/aktivita	P S
http://linked.open...avai/riv/aktivity	P(GAP105/12/0824), S
http://linked.open...iv/cisloPeriodika	November
http://linked.open...vai/riv/dodaniDat	2015
http://linked.open...aciTvurceVysledku	Němeček, Jiří Králík, Vlastimil
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	České vysoké učení technické v Praze / Fakulta stavební
http://linked.open...dnocenehoVysledku	8140
http://linked.open...ai/riv/idVysledku	RIV/68407700:21110/14:00220518
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	Nanoindentation; Micromechanical properties; Elastic properties; Hardness; Modulus mapping; Aluminium foam (en)
http://linked.open.../riv/klicoveSlovo	Micromechanical properties Elastic properties Hardness Nanoindentation Aluminium foam Modulus mapping
http://linked.open...odStatuVydavatele	CH - Švýcarská konfederace
http://linked.open...ontrolniKodProRIV	[5A4C8D948779]
http://linked.open...i/riv/nazevZdroje	Materials Science and Engineering A - Structural Materials: Properties, Microstructure and Processing
http://linked.open...in/vavai/riv/obor	JN
http://linked.open...ichTvurcuVysledku	2 (xsd:int)
http://linked.open...cetTvurcuVysledku	2 (xsd:int)
http://linked.open...vavai/riv/projekt	Determination of Structural and Mechanical Properties of Metal Foams Using Nanoindentation, Computer tomography and Microstructural FEM models
http://linked.open...UplatneniVysledku	2014
http://linked.open...v/svazekPeriodika	618
http://linked.open...iv/tvurceVysledku	Králík, Vlastimil Němeček, Jiří
http://linked.open...ain/vavai/riv/wos	000344439500016
issn	0921-5093
number of pages	11 (xsd:int)
http://bibframe.org/vocab/doi	10.1016/j.msea.2014.08.036
http://localhost/t...ganizacniJednotka	21110

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