WIT Press


Mechanics And Mechanism Of Creep-fatigue Small Crack Initiation And Propagation In SiC Whisker Reinforced Aluminum Base Composite At High Temperature

Price

Free (open access)

Paper DOI

10.2495/LD960551

Volume

13

Pages

13

Published

1996

Size

1,850 kb

Author(s)

M. Okazaki, H. Tashiro & J. Mizutani

Abstract

The creep-fatigue fracture process from the small crack initiation to the subsequent propagation behavior in a 6061 aluminum alloy composite reinforced with SiC whiskers, SiCw/6061, was investigated at high temperature. It was shown that the followings are controlling mechanism in the creep-fatigue failure: (a) nucleation of small cracks, or microcracks near the interface between the whiskers and the matrix, (b) the inhibiting effect of the whiskers against the small crack growth, (c) the crack face bridging by

Keywords