STP1309

    Tensile and Fatigue Behavior of a Silicon Carbide/Silicon Carbide Composite at 1300°C

    Published: Jan 1997


      Format Pages Price  
    PDF (448K) 15 $25   ADD TO CART
    Complete Source PDF (7.8M) 15 $71   ADD TO CART


    Abstract

    Monotonic and fatigue properties of a silicon carbide/silicon carbide composite were studied at 1300°C in tension. All tests were conducted in nitrogen (N2) to eliminate oxidation. Because of the composite architecture and the differences between matrix and fiber properties, the composite failure under both monotonic and cyclic loads took place in stages. In a monotonie test, the composite failure occurred by the creep of bridging fibers, and thus, fibers displayed nonbrittle fracture features. In fatigue tests, although creep was also occurring under cyclic loads, the fracture surface analysis showed that final fracture took place in a brittle manner.

    Keywords:

    silicon carbide, creep, fatigue, high temperature, tensile


    Author Information:

    Ünal, Ö
    Associate Ceramist, 207 Metals Development, Ames Laboratory, Ames, IA


    Paper ID: STP11816S

    Committee/Subcommittee: C28.07

    DOI: 10.1520/STP11816S


    CrossRef ASTM International is a member of CrossRef.