Cracking of AA 8006 thi sheets during forming of heat exchanger fins

Kód výsledku v IS VaVaI

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Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Cracking of AA 8006 thi sheets during forming of heat exchanger fins

Popis výsledku v původním jazyce

Heat exchanger fins of complex configuration are formed from thin aluminium sheets. Formability of Al sheets depends on the production technology used. Sheets of high formability are produced by direct-chill (DC) casting and hot rolling. However, using the modern technology of continuous strip-casting and cold rolling a substantial reduction of material and energy costs is achieved. A study of typical cracks which occur during forming operations of heat exchanger fins from strip-cast AA 8006 sheets is presented. It was found that in several cases failure is due to surface grain size inhomogeneity. In other cases crack initiation is probably caused by local concentration of deformation. The insufficient formability of strip-cast AA 8006 thin sheets canalso be due to high initial work hardening rate related to the presence of a dense distribution of Al-Fe-Si intermetallic particles in the structure.

Název v anglickém jazyce

Cracking of AA 8006 thi sheets during forming of heat exchanger fins

Popis výsledku anglicky

Heat exchanger fins of complex configuration are formed from thin aluminium sheets. Formability of Al sheets depends on the production technology used. Sheets of high formability are produced by direct-chill (DC) casting and hot rolling. However, using the modern technology of continuous strip-casting and cold rolling a substantial reduction of material and energy costs is achieved. A study of typical cracks which occur during forming operations of heat exchanger fins from strip-cast AA 8006 sheets is presented. It was found that in several cases failure is due to surface grain size inhomogeneity. In other cases crack initiation is probably caused by local concentration of deformation. The insufficient formability of strip-cast AA 8006 thin sheets canalso be due to high initial work hardening rate related to the presence of a dense distribution of Al-Fe-Si intermetallic particles in the structure.

Druh

D - Stať ve sborníku

CEP obor

JG - Hutnictví, kovové materiály

OECD FORD obor

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Projekt

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Návaznosti

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Rok uplatnění

1999

Kód důvěrnosti údajů

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

Název statě ve sborníku

Proceedings of the 1' International conference Physical metallurgy anf fracture of materials '99

ISBN

80-7099-433-9

ISSN

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e-ISSN

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Počet stran výsledku

4

Strana od-do

113-116

Název nakladatele

Technická univerzita v Košiciach, Katedra náuky o materiáloch

Místo vydání

Košice

Místo konání akce

Herľany

Datum konání akce

6. 9. 1999

Typ akce podle státní příslušnosti

EUR - Evropská akce

Kód UT WoS článku

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