Creep under Step-wise Temperature Cycling

Abstract

In the present paper, the analytical relation of creep under temperature cycling to static creep under steady temperature is presented and is examined by the creep tests under step-wise temperature cycling on a low carbon steel, a 13 chrominum steel and an AISI 304 type stainless steel. It was found that temperature cycling does not give a serious influence on creep. The creep under cyclic temperature can be predicted by introducing the idea of the equivalent steady temperature for creep, which is determined from the data of usual creep tests at steady temperature combined with the prescribed program of temperature cycling. The analytical results are in good agreement with the experimental results under periodic stepped variation of temperature.