HIGH-TEMPERATURE CREEP-BEHAVIOR OF CR3C2 CERAMIC COMPOSITE

The high temperature creep behaviors of Cr3C2 composite were investiga ted under compressive and bending creep. The stress exponent and activ ation energy of Cr3C2 composite were obtained at 1000 and 1050 degrees C. Assuming different tensile and compressive responses in a ceramic material, bending creep responses of Cr3C2 composite were analyzed num erically. The numerical analysis showed that the stress state at the c ross-section of a crept sample was redistributed nonlinearly and the n eutral axis moved toward the compressive region as the applied stress increased during bending creep.