Autoradiographic evidence of carbon clustering in Fe-Ni-C martensite

The distribution of C in the microstructure of the twinned martens\le e--23 Ni--0.4 C has been studied by microautoradiography of radioactive C statistical analysis of the autoradiographs, observed in the scanning electron microscope for massive specimens or in the transmission electron microscope f...

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Bibliographic Details
Published in:Journal of materials science 1979-08, Vol.14 (8), p.1961-1967
Main Authors: Ovejero-Garcia, J., Chene, J., Prabhu Gaunkar, G. V., Aucouturier, M.
Format: Article
Language:English
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Summary:The distribution of C in the microstructure of the twinned martens\le e--23 Ni--0.4 C has been studied by microautoradiography of radioactive C statistical analysis of the autoradiographs, observed in the scanning electron microscope for massive specimens or in the transmission electron microscope for thin foils, shows that: clustering of C in the twin boundaries of the martensite plates occurs rapidly by aging at room temp.; two twinning systems may be active sites for C clustering in the same plate; C segregation seems more pronounced in twin boundaries than in martensite/martensite, martensite/austenite, or midrib interfaces; the precipitation of epsilon -carbide by aging at 100 and 150 deg C is confirmed.13 refs.--AA
ISSN:0022-2461
1573-4803
DOI:10.1007/BF00551038