Influence of heat treatment on compression fatigue of aluminium foams

Metal foams were produced by means of the powder compact melting technique. Specimens were made of a wrought aluminium alloy similar in composition to AA 6061. A part of the samples was subjected to a precipitation hardening treatment after foaming, others were left in the state “as foamed”. Cyclic...

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Veröffentlicht in:	Journal of materials science 2002-08, Vol.37 (16), p.3447-3451
Hauptverfasser:	LEHMHUS, D, MARSCHNER, C, BANHART, J, BOMAS, H
Format:	Artikel
Sprache:	eng
Schlagworte:	Aluminum base alloys Applied sciences Casting alloys Compressive properties Cyclic testing Exact sciences and technology Failure modes Fatigue Fatigue life Fatigue strength Foamed metals Foaming Heat treating Heat treatment Materials science Mechanical properties and methods of testing. Rheology. Fracture mechanics. Tribology Metal fatigue Metal foams Metals. Metallurgy Precipitation hardening Reference systems S N diagrams
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Beschreibung
Zusammenfassung:	Metal foams were produced by means of the powder compact melting technique. Specimens were made of a wrought aluminium alloy similar in composition to AA 6061. A part of the samples was subjected to a precipitation hardening treatment after foaming, others were left in the state “as foamed”. Cyclic tests were then carried out under compressive stresses. S-N curves of untreated and heat-treated foams are compared. Values for fatigue strength were estimated and compared to the static strength found for comparable specimens. As a reference system with a brittle failure mode foams based on the aluminium casting alloy AlSi7 are examined.
ISSN:	0022-2461 1573-4803
DOI:	10.1023/A:1016506905271