Creep Rupture Behavior of Precorroded Carbon Steel

Abstract

Creep rupture tests have been conducted on specimens of AISI 1018 low carbon steel pre-exposed to various environments: polluted seawater, natural seawater, industrial seashore tide, drinking tap water, and industrial air. Exposure to increasingly corrosive environments before creep testing results in decreasing creep strength by appreciable amounts. With suitable extrapolation procedures, creep rupture test data may be cautiously used to generate design creep curves involving service temperature, stress, and life for precorroded steel. Further experiments are needed to investigate the combined effect of corrosion and creep on rupture life over a wider range of environmental test parameters.