Numéro
J. Phys. IV France
Volume 03, Numéro C7, Novembre 1993
The 3rd European Conference on Advanced Materials and Processes
Troisiéme Conférence Européenne sur les Matériaux et les Procédés Avancés
Page(s) C7-1763 - C7-1767
DOI http://dx.doi.org/10.1051/jp4:19937279
The 3rd European Conference on Advanced Materials and Processes
Troisiéme Conférence Européenne sur les Matériaux et les Procédés Avancés

J. Phys. IV France 03 (1993) C7-1763-C7-1767

DOI: 10.1051/jp4:19937279

Influence of composition and distribution of the reinforcing particles on fatigue properties of metal matrix composites

E. HOCHREITER and F. JEGLITSCH

Institut für Metallkunde und Werkstoffprüfung, Montanuniversität, Franz-Josef Strasse 18, 8700 Leoben, Austria


Abstract
Fatigue-life-time behaviour bas been examined of extruded 6061 aluminium alloy composites reinforced with 15 vol.% SiC and 10 vol.% Al2O3 particles. The peak particle sizes are at about 4.5 and 6 µm. Within measured S-N curves the fatigue life-time at given stress amplitudes of SiCp/AA6061 is superiour to that of Al2O3p/AA6061 in the low-cycle fatigue region as well as in the high-cycle fatigue region. The discussion of these results has been done by means of theoretical evaluated crack propagation curves. Interfacial bonding has been studied by means of TEM investigations.



© EDP Sciences 1993