Hier finden Sie wissenschaftliche Publikationen aus den Fraunhofer-Instituten.

Influence of heat treatment on compression fatigue of aluminium foams

: Lehmhus, D.; Marschner, C.; Banhart, J.


Journal of Materials Science : JMS 37 (2002), Nr.16, S.3447-3451
ISSN: 0022-2461
ISSN: 1573-4803
Fraunhofer IFAM ()
Al foam; heat treatment; compression fatigue; powder compact melting technique; metal foam; precipitation hardening treatment; foaming; cyclic test; compressive stress; heat-treated foam; untreated foam; fatigue strength; static strength; brittle failure mode

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.