RT Journal Article
T1 Evolution of Microstructure during Isothermal Treatments of a Duplex-Austenitic 0.66C11.4Mn.9.9Al Low-Density Forging Steel and Effect on the Mechanical Properties
A1 Kaltzakorta, Idurre
A1 Gutierrez, Teresa
A1 Elvira, Roberto
A1 Jimbert, Pello
A1 Guraya, Teresa
AB In the last decades, low-density steels for forging have increasing interest in the automotiveindustry, and good mechanical properties are required for their real application. This paperdescribes the results obtained for a 0.66C11.4Mn9.9Al duplex austenitic low-density steel after applyinga set of isothermal treatments at different combinations of time and temperature, aimed topromote kappa carbide precipitation, and improve the mechanical properties obtained with a waterquenching treatment. The effects of the different isothermal treatments on the microstructure andon the mechanical properties have been analyzed and compared to those obtained from a quenchingheat treatment. We found that isothermal treatments in the range temperature between 550–750 °Cpromoted the profuse precipitation of coarse kappa carbides at grain boundaries, which dramaticallyreduced the ductility of the alloy, whereas a traditional quenching treatment resulted in a bettercombination of ductility and mechanical strength.
PB Multidisciplinary Digital Publishing Institute (MDPI)
YR 2021
FD 2021-01-26
LK http://hdl.handle.net/11556/1064
UL http://hdl.handle.net/11556/1064
LA eng
NO Kaltzakorta, Idurre, Teresa Gutierrez, Roberto Elvira, Pello Jimbert, and Teresa Guraya. “Evolution of Microstructure During Isothermal Treatments of a Duplex-Austenitic 0.66C11.4Mn.9.9Al Low-Density Forging Steel and Effect on the Mechanical Properties.” Metals 11, no. 2 (January 26, 2021): 214. doi:10.3390/met11020214.
NO This research has been carried out with a financial grant of the Basque Government under its ELKARTEK Research Program, KK-2016/00029-ABADE project and KK-2018/00016-COFADEN project.
DS TECNALIA Publications
RD 20 jul 2024