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.

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