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RESEARCH PAPERS

Creep Damage in 17–12 SPH Stainless Steel Notched Specimens: Metallographical Study and Numerical Modeling

[+] Author and Article Information
E. Contesti, G. Cailletaud, C. Levaillant

Centre des Matériaux de l’Ecole des Mines de Paris, Evry, France

J. Pressure Vessel Technol 109(2), 228-235 (May 01, 1987) (8 pages) doi:10.1115/1.3264901 History: Received April 23, 1986; Revised January 22, 1987; Online November 05, 2009

Abstract

Creep-rupture tests on notched specimens of 17–12 SPH stainless steel are performed at elevated temperature (600°C). Metallographic examination allows the quantitative estimation of the intergranular cracking damage occurring during creep tests. Numerical computations based on currently used rupture criteria are performed and compared to both intergranular damage profile and creep life. With regards to the intergranular damage profile measured by interrupting tests on the 1-mm notch radius specimen, Von Mises stress criterion does not predict the experimental location of the maximum damage, because of the influence of stress-triaxiality on the rupture process.

Copyright © 1987 by ASME
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