Elsevier

Materials Science and Engineering

Volume 84, December 1986, Pages 49-64
Materials Science and Engineering

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Creep fracture of a 9Cr1Mo steel

https://doi.org/10.1016/0025-5416(86)90222-3Get rights and content

Abstract

Creep rupture experiments, using both smooth and double-edge-notched tension test pieces, have been performed in air on normalized-and-tempered 9Cr1Mo steel (where the composition is in approximate weight per cent). Substantial notch strengthening was noted for rupture lives up to 6000 h, an observation explained by the absence of localized grain boundary damage. Crack initiation and propagation measurements suggest that bulk creep deformation controls the behaviour observed in the present work.

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