Abstract
The mechanical properties and microstructural characteristics of a steel able to sustain the TRIP-effect were studied. The material was prepared by taking in mind the partial substitution of silicon by aluminum following a processing route that included hot forging, hot and cold rolling, intercritical annealing, and a final bainitic isothermal treatment. The mechanical properties that were obtained resulted to be above those of commercial a 780 TRIP steel. The TRIP phenomenon was confirmed by the change in retained austenite before and after deforming the steel; X-ray diffraction was used to evaluate the volume content of retained austenite. Formability of the steel under study can be rationalized in terms of the texture developed in the material.
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Acknowledgments
The authors would like to thank the support provided by the Chilean National Found for Science and Technology (FONDECYT, Fondo Nacional de Ciencia y Tecnología) for project 1090311, and the Direction for Scientific and Technological Research (DICYT, Dirección de Investigaciones Científicas y Tecnológicas) of Universidad de Santiago de Chile.
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Manuscript submitted March 7, 2015.
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Monsalve, A., Guzmán, A., De Barbieri, F. et al. Mechanical and Microstructural Characterization of an Aluminum Bearing Trip Steel. Metall Mater Trans A 47, 3088–3094 (2016). https://doi.org/10.1007/s11661-016-3435-5
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DOI: https://doi.org/10.1007/s11661-016-3435-5