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Meeting 2020 TMS Annual Meeting & Exhibition
Symposium Phase Transformations and Microstructural Evolution
Presentation Title Analysis by Dilatometry and Nanoindentation in an Experimental Medium-carbon Steel during the Martensite Isothermal Tempering
Author(s) Eliuth Barrera-Villatoro, Octavio Vázquez-Gómez, Perla Guadalupe Díaz-Villaseñor, Alexis Ivan Gallegos-Perez, Héctor Javier Vergara-Hernández, Bernardo Fabián Campillo-Illanes
On-Site Speaker (Planned) Eliuth Barrera-Villatoro
Abstract Scope The isothermal tempering treatment of martensite was studied in an experimental medium-carbon steel alloyed with Cr-Mo-V by differential dilatometry and nanoindentation. The martensite decomposition stages were determined under continuous heating conditions at a rate of 35 °C min-1 until reaching a temperature of 1000 °C. Through the critical transformation points associated with the stages of precipitation, dissolution and phase transformation, a temperature close to 462 °C (precipitation temperature of Cr Mo V carbides) was selected and isothermal treatments were carried out at different times: 15, 30, 60 and 120 minutes in an inert argon atmosphere. Subsequently, a nanoindentation analysis was carried out to determine the nanohardness of the present phases, correlating it with the composition of the hard phases through a microanalysis by X-ray energy dispersion spectrometry.
Proceedings Inclusion? Planned: Supplemental Proceedings volume

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