论文信息 - Growth of Austenitic Stainless Steels Oxidised in Carbon and Oxygen Bearing Gases

Growth of Austenitic Stainless Steels Oxidised in Carbon and Oxygen Bearing Gases

AbstractSample lengths from A.G.R. (Advanced Gas Cooled Reactor) fuel cans in 20Cr/25Ni/Nb and 18Cr/12Ni/Nb steels and specimens of thin 18Cr/8Ni/Ti foil have been heated in carbon dioxide and other oxidising gases at temperatures between 750 and 900° for periods up to 2500 h. Length increases of up to approximately 2% have been observed, the growth being greater under conditions of thermal cycling than under isothermal conditions. Extensions have been related in part to carbon pick-upand the formation of carbides but the major proportion of the observed extensions has been due to tensile stresses produced in the thin sectioned steels as a result of the oxidation processes.

J. Noden | C. Knights | M. W. Thomas

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