Recovery processes and backflow after creep unloading of short fiber reinforced, squeeze cast aluminium alloys

Journal Article · Sun May 01 04:00:00 EDT 1994 · Scripta Metallurgica et Materialia; (United States)

DOI:https://doi.org/10.1016/0956-716X(94)90332-8· OSTI ID:5260655

Dlouhy, A; Eggeler, G ^[1]

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1. Swiss Federal Inst. of Tech., Lausanne (Switzerland)

The present note considers the influence of recovery processes on the response of short fiber reinforced, squeeze cast aluminum composites after creep unloading. Recovery processes reduce the amount of elastic strain which is stored in the fibers and in parallel contribute to forward creep of the MMC. After unloading, recovery processes result in a forward creep component and thus decrease the total backflow. The predictions of the aligned-fiber unit cell model in underestimate creep strain because all fibers are assumed to be aligned in the direction of the applied stress whereas, in practice, there is a random planar fiber texture. Secondly, recovery processes decrease the amount of elastic energy stored in the fibers and the resulting forward creep component is not taken into account.

• OSTI ID: 5260655
• Journal Information: Scripta Metallurgica et Materialia; (United States), Journal Name: Scripta Metallurgica et Materialia; (United States) Vol. 30:9; ISSN 0956-716X; ISSN SCRMEX
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360603* -- Materials-- Properties
ALLOYS
ALUMINIUM ALLOYS
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
CHALCOGENIDES
CREEP
DEFORMATION
HEAT RESISTANT MATERIALS
MATERIALS
MATHEMATICAL MODELS
MECHANICAL PROPERTIES
OXIDES
OXYGEN COMPOUNDS
TEMPERATURE DEPENDENCE