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The behaviour of a metallic matrix composite material when subjected to a load is significantly influenced by the conditions of the fibre-matrix interface after the production process. Achieving the necessary interface conditions in metallic matrix composite materials is a problem. This report presents the results of an experiment carried out on a composite made up of a 2014 T6 aluminium alloy strengthened with short alumina fibres arranged in a partially random fashion. The mechanical behaviour was assessed by subjecting the material to fracture stress. The dynamic and structural alterations were detected by use of acoustic emission methods. The data thus obtained were confirmed by fractographic observation. Considerable deviation of actual behaviour from expected behaviour, resulting from insufficient fibre-matrix bonding to the interface, was detected. This deviation explained the causes of the obvious difference between experimental values of resistance to tensile stress and theoretical ones.

Additional information

Authors: CANEVA C, Università 'La Sapienza', Roma (IT);SOLONI A, Università 'La Sapienza', Roma (IT);STIVALI F, Università 'La Sapienza', Roma (IT);SANTULLI C, JRC Ispra (IT)
Bibliographic Reference: Paper presented: 10(o) Convegno Nazionale I.G.F., Torino (IT), Giugno 8-10, 1994
Availability: Available from (1) as Paper IT 38426 ORA
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