Buckling load was experimentally measured in a wide range of temperature up to 1200 °C.
Two different test methods for measuring buckling failure load were suggested and compared.
Creep buckling under compressive load was performed to explain results of buckling tests.
Reduced buckling load was explained by effects of creep buckling, geometrical imperfection, and thermal stress.
Buckling processes were visualized by a high speed camera.