Fatigue Strength Degradation of AlSi12CuNiMg Alloy Due to High Temperature Exposure: A Structural Investigation

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081723%3A_____%2F14%3A00434887" target="_blank" >RIV/68081723:_____/14:00434887 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.proeng.2014.06.221" target="_blank" >http://dx.doi.org/10.1016/j.proeng.2014.06.221</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.proeng.2014.06.221" target="_blank" >10.1016/j.proeng.2014.06.221</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Fatigue Strength Degradation of AlSi12CuNiMg Alloy Due to High Temperature Exposure: A Structural Investigation

Popis výsledku v původním jazyce

The strengthening mechanism based on the formation of precipitates (Guinier-Preston (GP) zones) during decomposition of a metastable supersaturated solid solution is stable and effective below temperatures, which are typically overcome in the piston region facing the combustion chamber. Therefore, pistons experience a progressive loss of strength due to over-aging during service. This contribution reports of a structural investigation on a eutectic AlSi12CuNiMg alloy before and after fatigue testing athigh temperatures (up to 350 °C). Metallography, color etching, SEM and TEM are used to elucidate the following aspects: 1) the structural features of the alloy (dendrites of ?phase, primary Si particle size and distribution, morphology and distributionof intermetallic phases); 2) the evolution of the strengthening mechanism (GP zones) with high temperature exposure.

Název v anglickém jazyce

Fatigue Strength Degradation of AlSi12CuNiMg Alloy Due to High Temperature Exposure: A Structural Investigation

Popis výsledku anglicky

The strengthening mechanism based on the formation of precipitates (Guinier-Preston (GP) zones) during decomposition of a metastable supersaturated solid solution is stable and effective below temperatures, which are typically overcome in the piston region facing the combustion chamber. Therefore, pistons experience a progressive loss of strength due to over-aging during service. This contribution reports of a structural investigation on a eutectic AlSi12CuNiMg alloy before and after fatigue testing athigh temperatures (up to 350 °C). Metallography, color etching, SEM and TEM are used to elucidate the following aspects: 1) the structural features of the alloy (dendrites of ?phase, primary Si particle size and distribution, morphology and distributionof intermetallic phases); 2) the evolution of the strengthening mechanism (GP zones) with high temperature exposure.

Druh

D - Stať ve sborníku

CEP obor

JL - Únava materiálu a lomová mechanika

OECD FORD obor

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Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2014

Kód důvěrnosti údajů

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

Název statě ve sborníku

XVII International Colloquium on Mechanical Fatigue of Metals (ICMFM17)

ISBN

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ISSN

1877-7058

e-ISSN

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Počet stran výsledku

4

Strana od-do

43-46

Název nakladatele

Elsevier

Místo vydání

Amsterdam

Místo konání akce

Verbania

Datum konání akce

25. 6. 2014

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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