Instrumented Nanoindentation Tests Applied to Bulk Metallic Materials: From Calibration Issue to Pile-Up Phenomena

Instrumented nanoindentation tests have reached an effective level of theoretical and practical knowledge to become an interesting and useful tool for determining hardness, <i>H</i>, and local elasticity (reduced Young’s modulus), <i>E<sub>r</sub></i>, of a variet...

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Main Author: Marcello Cabibbo
Format: Article
Language:English
Published: MDPI AG 2021-10-01
Series:Materials
Subjects:
Online Access:https://www.mdpi.com/1996-1944/14/21/6360
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author Marcello Cabibbo
author_facet Marcello Cabibbo
author_sort Marcello Cabibbo
collection DOAJ
description Instrumented nanoindentation tests have reached an effective level of theoretical and practical knowledge to become an interesting and useful tool for determining hardness, <i>H</i>, and local elasticity (reduced Young’s modulus), <i>E<sub>r</sub></i>, of a variety of materials, from coatings and thin films to bulk metallic materials. Nanoindentation instruments are equipped with analysis software for raw data for hardness and reduced Young’s modulus evaluation, generally based on the Oliver and Pharr analysis method. On the other hand, it is widely known and recognized that prior data acquisition, a tip-dependent calibration procedure of compliance, and area function are needed. With this in view, an accurate and sound calibration protocol is here reported. Hardness and local elastic modulus is measured on different bulk metallic materials, showing the distinctive strengths of using nanoindentation. Finally, a local elastic-plastic phenomenon mostly induced by the nanoindentation tip on ductile metallic material (i.e., pile-up) is also reported and modelled. This manuscript is thus intended to favor and account for the importance of using the instrumented nanoindentation tests for <i>H</i> and <i>E<sub>r</sub></i> measurements of metallic materials.
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spelling doaj.art-198d771822dc4ac3a1e319093ff44fb62023-11-22T21:10:59ZengMDPI AGMaterials1996-19442021-10-011421636010.3390/ma14216360Instrumented Nanoindentation Tests Applied to Bulk Metallic Materials: From Calibration Issue to Pile-Up PhenomenaMarcello Cabibbo0Dipartimento di Ingegneria Industriale e Scienze Matematiche (DIISM), Università Politecnica Delle Marche, Via Brecce Bianche 12, 60131 Ancona, ItalyInstrumented nanoindentation tests have reached an effective level of theoretical and practical knowledge to become an interesting and useful tool for determining hardness, <i>H</i>, and local elasticity (reduced Young’s modulus), <i>E<sub>r</sub></i>, of a variety of materials, from coatings and thin films to bulk metallic materials. Nanoindentation instruments are equipped with analysis software for raw data for hardness and reduced Young’s modulus evaluation, generally based on the Oliver and Pharr analysis method. On the other hand, it is widely known and recognized that prior data acquisition, a tip-dependent calibration procedure of compliance, and area function are needed. With this in view, an accurate and sound calibration protocol is here reported. Hardness and local elastic modulus is measured on different bulk metallic materials, showing the distinctive strengths of using nanoindentation. Finally, a local elastic-plastic phenomenon mostly induced by the nanoindentation tip on ductile metallic material (i.e., pile-up) is also reported and modelled. This manuscript is thus intended to favor and account for the importance of using the instrumented nanoindentation tests for <i>H</i> and <i>E<sub>r</sub></i> measurements of metallic materials.https://www.mdpi.com/1996-1944/14/21/6360nanoindentationcalibrationpile-upmetallic materials
spellingShingle Marcello Cabibbo
Instrumented Nanoindentation Tests Applied to Bulk Metallic Materials: From Calibration Issue to Pile-Up Phenomena
Materials
nanoindentation
calibration
pile-up
metallic materials
title Instrumented Nanoindentation Tests Applied to Bulk Metallic Materials: From Calibration Issue to Pile-Up Phenomena
title_full Instrumented Nanoindentation Tests Applied to Bulk Metallic Materials: From Calibration Issue to Pile-Up Phenomena
title_fullStr Instrumented Nanoindentation Tests Applied to Bulk Metallic Materials: From Calibration Issue to Pile-Up Phenomena
title_full_unstemmed Instrumented Nanoindentation Tests Applied to Bulk Metallic Materials: From Calibration Issue to Pile-Up Phenomena
title_short Instrumented Nanoindentation Tests Applied to Bulk Metallic Materials: From Calibration Issue to Pile-Up Phenomena
title_sort instrumented nanoindentation tests applied to bulk metallic materials from calibration issue to pile up phenomena
topic nanoindentation
calibration
pile-up
metallic materials
url https://www.mdpi.com/1996-1944/14/21/6360
work_keys_str_mv AT marcellocabibbo instrumentednanoindentationtestsappliedtobulkmetallicmaterialsfromcalibrationissuetopileupphenomena