Multiaxial deformation and life prediction model and experimental data for advanced silicon nitride ceramics.

摘要

This paper summarizes recent experimental results on creep and creep rupture behavior of a commercial grade of Si(sub 3)N(sub 4) ceramic in the temperature range of 1150 to 1300C obtained at ORNL; and introduces a tentative multiaxial deformation and life prediction model for ceramic materials under general thermomechanical loadings. Issues related to the possible standardization of the data analysis methodology and possible future research needs for high temperature structural ceramics in the area of development of data base and life prediction methodology are also discussed.