Effect of Pile-Up on the Mechanical Characteristics of Steel with Different Strain History by Depth Sensing Indentation

Kód výsledku v IS VaVaI

RIV/46747885:24210/14:#0006385 - isvavai.cz

Výsledek na webu

http://www.metal2014.com/files/proceedings/17/reports/2582.pdf

DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Effect of Pile-Up on the Mechanical Characteristics of Steel with Different Strain History by Depth Sensing Indentation

Popis výsledku v původním jazyce

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

Název v anglickém jazyce

Effect of Pile-Up on the Mechanical Characteristics of Steel with Different Strain History by Depth Sensing Indentation

Popis výsledku anglicky

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

Druh

D - Stať ve sborníku

CEP obor

JG - Hutnictví, kovové materiály

OECD FORD obor

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Projekt

EE2.3.30.0024: Rozvoj řešitelských týmů projektů VaV na Technické univerzitě v Liberci

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2014

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

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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Počet stran výsledku

5

Strana od-do

629-633

Název nakladatele

OstravaTanger, .s.r.o.

Místo vydání

Ostrava

Místo konání akce

Brno

Datum konání akce

21. 5. 2014

Typ akce podle státní příslušnosti

EUR - Evropská akce

Kód UT WoS článku

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