Journal
ENGINEERING FRACTURE MECHANICS
Volume 70, Issue 15, Pages 2137-2148Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/S0013-7944(02)00238-2
Keywords
MMCs; high temperature; fatigue tests; tensile tests; fractography; fracture mechanisms
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The material employed in the present work is a Ti6Al4V matrix composite unidirectionally reinforced with eight plies of SiC fibres. This paper studies the tensile behaviour and the fatigue fracture processes at the operation temperatures planned for these materials (550 and 600 degreesC). The fractographic analysis and microstructural observations of the tested samples at both temperatures are also presented. These are used to determine the mechanisms of nucleation and propagation of damage until fracture. (C) 2002 Elsevier Ltd. All rights reserved.
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