Volume 2, Issue 3 (Apr 2005)                   IJMSE 2005, 2(3): 9-15 | Back to browse issues page

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RAZAGHIAN A., YU D., CHANDRA T.. TENSILE AND FRACTURE CHARACTERISTICS OF A SIC- PARTICLE-REINFORCED 7075 ALUMINIUM ALLOY. IJMSE 2005; 2 (3) :9-15
URL: http://ijmse.iust.ac.ir/article-1-50-en.html
TENSILE AND FRACTURE CHARACTERISTICS OF A SIC- PARTICLE-REINFORCED 7075 ALUMINIUM ALLOY
RAZAGHIAN A. , YU D. , CHANDRA T.
Abstract:   (34693 Views)
Fracture behavior of a 7075 aluminium alloy reinforced with 15 Vol%. SiC particles was studied after T6 and annealing heat treatments under uniaxial tensile loading at room temperature. The scanning electron microscopy of fractured surfaces and EDS analysis showed:, that fracture mechanism changed from due mainly to fractured particle in T6 condition to interface decohesion in samples in annealed state. Different fracture mechanisms in annealed and T6 conditions can be ascribed mainly to the significant difference in the stress concentration levels around the particles. In T6 condition, very high local stress sufficient to cause fracture of particle can be generated during loading, while the presence of large precipitates at the particle/matrix interface produced interface decohesion leading to final fracture in the annealed state.
Keywords: particle, reinforced composite, particle fracture, interface decoheion, particle/matrix interface
     
Type of Study: Research Paper | Subject: Ceramics
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