Abstract
The behavior of Fe-Ni-Cr alloys during stress-rupture in gaseous environments containing multiple oxidants is discussed in terms of the necessary thermodynamic conditions for the various oxidation reactions and the subsequent effect of these reactions on elevated temperature mechanical properties. Results of stress-rupture tests of three alloys (Type 310 stainless steel, RA 333, and Alloy 800H) in a gaseous environment containing oxygen, sulfur, and carbon are presented with an emphasis on characterizing the microstructural changes which occur during stress-rupture and the resulting effect on stress-rupture properties. The effect of dynamic straining on the corrosion reactions is also discussed. ntmis|This paper is based upon a presentation delivered at the symposium “Effects of Environment on Elevated Temperature Mechanical Properties” held at the February, 1982 meeting of TMS-AIME in Dallas, Texas, under the sponsorship of the Corrosion and Environmental Effects Joint Committee (TMS/MSD).
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