軟鋼の第一期クリープに及ぼす温度効果

概要

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Creep phenomenon is effected greatly by stress and temperature. The effect of temperature on creep characteristics is an important aspect of the study on creep. In the present study, the influence of temperature on the primary creep of steel is investigated. A device is introduced to predict the creep characteristics (creep strain ε_c or creep rate ε^^・) at any temperature T differing by ⊿T from a reference temperature T_0, by using the creep data (creep strain ε_<c0> or creep rate ε^^・_0) of the material at the reference temperature. This relation under a given applied stress is represented as follows ; (ε_c)/(ε_<c0>)|_t=ε^^・/(ε_0)|_t=exp[K/T_0=(T_0^2)/(⊿T), where t is elapsed time, K factor of temperature-dependence and T absolute temperature. Experiments were made on mild steel. It is found that the empirical formulae satisfactorily explain the experimental results when the stress and temperature are within a certain range.
社団法人日本材料学会の論文
1956-09-15