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Microstructure, deformation and lifetime of alloy 617B - experiences from different heat treatments and heats

: Maier, G.; Schlesinger, M.; Oesterlin, H.

Materialprüfungsanstalt Universität Stuttgart -MPA-, Stuttgart:
Plant monitoring and availability - component calculation and materials utilisation. Abstracts of the lectures/manuscripts on CD : 39th MPA-Seminar 2013 on Oktober 8th and 9th 2013 in Stuttgart
Stuttgart, 2013
Presentation 5, 21 pp.
Materialprüfungsanstalt Universität Stuttgart (MPA Seminar) <39, 2013, Stuttgart>
Conference Paper
Fraunhofer IWM ()
Alloy 617B; grain size; strain rates; viscoplastic material; fatigue crack

The present work summarizes experiences with Alloy 617B from different heat treatments and heats investigated at Fraunhofer IWM. For this purpose, different batches of Alloy 617B are compared with respect to chemical composition, grain size, and precipitation state. Moreover, results from low cycle fatigue tests at different strain rates with and without hold times are presented, giving impressions about the viscoplastic material properties and lifetime as a function of the material condition. Further investigations comprise fatigue crack growth measurements and fractographic analysis for the characterization of the prevailing damage mechanisms.