HAL : jpa-00225935, version 1

DOI : 10.1051/jphyscol:1986741

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Journal de Physique Colloques 47, C7 (1986) C7-239-C7-244

MICROSTRUCTURAL CHARACTERIZATION OF PRIMARY COOLANT PIPE STEEL

M. Miller, J. Bentley

(1986)

Atom probe field-ion microscopy, analytical electron microscopy, and optical microscopy have been used to investigate the changes that occur in the microstructure of cast CF 8 primary coolant pipe stainless steel long term thermal aging. The cast duplex microstructure consisted of austenite with 15% δ-ferrite. Investigation of the aged material revealed that the ferrite spinodally decomposed into a fine scaled network of α and α'. A fine G-phase precipitate was also observed in the ferrite. The observed degradation in mechanical properties is probably a consequence of the spinodal decomposition in the ferrite.

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jpa-00225935, version 1

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Soumis le : Mercredi 1 Janvier 1986, 08:00:00

Dernière modification le : Mercredi 1 Janvier 1986, 08:00:00