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Published on: September 18, 2018
Positron Annihilation Spectroscopy Study of Carbon-Vacancy Interaction in Low-Temperature Bainite
Rosalia Rementeria1,2, Ricardo Domínguez-Reyes3, Carlos Capdevila1
1Department of Physical Metallurgy, Spanish National Center for Metallurgical Research (CENIM-CSIC), Avda. Gregorio del Amo 8, E-28040, Madrid, Spain.
Abstract:
Nano-scale investigations of bainitic structures formed at temperatures below 350 °C have shown that the bainitic ferrite lattice is super-saturated in carbon. A high density of intrinsic defects would be playing a part in the carbon-supersaturation levels detected. In this work, the role of C-vacancy complexes on carbon-supersaturation in low temperature bainite is investigated by means of Positron Annihilation Spectroscopy. Results reveal the presence of a significant amount of monovacancies in the structures that plays an important role on the formation of carbon clusters in the ferrite lattice of nano-scale bainitic structures.
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