Effect of Pile-Up on the Mechanical Characteristics of Steel with Different Strain History by Depth Sensing Indentation
Result description
Depth sensing indentation allows deriving mechanical properties from the indentation loaddisplacement data using a micromechanical model developed by Oliver & Pharr (O&P). However, O&P analysis on the indentation unloading curve is developed from a purely elastic contact mechanics (sink-in). The applicability of O&P analysis is limited by the materials pile-up. However, when it does, the contact area is larger than that predicted by elastic contact theory (material sinks-in during purely elastic contact), and both hardness, H, and Young?s modulus, E, are overestimated, because their evaluation depends on the contact area deduced from the load-displacement data. H may be thus overestimated by up to 60 % and E by up to 30 % depending on the extent of pile-up 1,2. It is therefore important to determine the effect of pile-up on obtained mechanical characteristics of the material by depth sensing indentation.The work experimentally analyses the effect of pile-up on the mechanical characteri
Keywords
Berkovich diamond indenterpile-uphardnessYoung?s modulusthin steel sheets
The result's identifiers
Result code in IS VaVaI
Result on the web
http://www.metal2014.com/files/proceedings/17/reports/2582.pdf
DOI - Digital Object Identifier
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Alternative languages
Result language
angličtina
Original language name
Effect of Pile-Up on the Mechanical Characteristics of Steel with Different Strain History by Depth Sensing Indentation
Original language description
Depth sensing indentation allows deriving mechanical properties from the indentation loaddisplacement data using a micromechanical model developed by Oliver & Pharr (O&P). However, O&P analysis on the indentation unloading curve is developed from a purely elastic contact mechanics (sink-in). The applicability of O&P analysis is limited by the materials pile-up. However, when it does, the contact area is larger than that predicted by elastic contact theory (material sinks-in during purely elastic contact), and both hardness, H, and Young?s modulus, E, are overestimated, because their evaluation depends on the contact area deduced from the load-displacement data. H may be thus overestimated by up to 60 % and E by up to 30 % depending on the extent of pile-up 1,2. It is therefore important to determine the effect of pile-up on obtained mechanical characteristics of the material by depth sensing indentation.The work experimentally analyses the effect of pile-up on the mechanical characteri
Czech name
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Czech description
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Classification
Type
D - Article in proceedings
CEP classification
JG - Metallurgy, metal materials
OECD FORD branch
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Result continuities
Project
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2014
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Article name in the collection
22nd International Conference on Metallurgy and Materials: Conference Proceedings
ISBN
978-80-87294-54-3
ISSN
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e-ISSN
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Number of pages
5
Pages from-to
629-633
Publisher name
OstravaTanger, .s.r.o.
Place of publication
Ostrava
Event location
Brno
Event date
May 21, 2014
Type of event by nationality
EUR - Evropská akce
UT code for WoS article
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Basic information
Result type
D - Article in proceedings
CEP
JG - Metallurgy, metal materials
Year of implementation
2014