Evolution of microstructure and strength during the ultra-fast tempering of Fe-Mn-C martensitic steels
DOUILLARD, Thierry
Matériaux, ingénierie et science [Villeurbanne] [MATEIS]
Consortium Lyon Saint-Etienne de Microscopie [CLYM]
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Matériaux, ingénierie et science [Villeurbanne] [MATEIS]
Consortium Lyon Saint-Etienne de Microscopie [CLYM]
Language
en
Article de revue
This item was published in
Journal of Materials Science. 2014, vol. 49, n° 22, p. 7782-7796
Springer Verlag
English Abstract
Ultra-fast tempering cycles, combining a rapid heating rate (R H = 300 °C/s) from room temperature to a peak temperature within the range 400-700 °C and subsequent rapid cooling, were performed on a Fe-Mn-C martensitic ...Read more >
Ultra-fast tempering cycles, combining a rapid heating rate (R H = 300 °C/s) from room temperature to a peak temperature within the range 400-700 °C and subsequent rapid cooling, were performed on a Fe-Mn-C martensitic steel. The influence of the peak temperature reached during the cycle was determined on both the tensile properties of the steel and on its microstructure. The mechanisms controlling the microstructural evolution occurring during rapid tempering were studied by combining both TEM observations and 3D reconstructions by FIB/SEM. A theoretical analysis coupled with the acquired experimental data was then proposed to explain the evolution of mechanical properties. The results obtained support the assumption that carbide precipitation during fast tempering plays a key role in the evolution of mechanical properties.Read less <
Origin
Hal imported