title: Nanomechanical characterization of nanostructured bainitic steel: Peak Force Microscopy and Nanoindentation with AFM.
abstract: The full understanding of the deformation mechanisms in nanostructured bainite requires the local characterization of its mechanical properties, which are expected to change from one phase, bainitic ferrite, to another, austenite. This study becomes a challenging process due to the bainitic nanostructured nature and high Young's modulus. In this work, we have carried out such study by means of the combination of AFM-based techniques, such as nanoindentation and Peak Force Quantitative Nanomechanical Mapping (PF-QNM) measurements. We have addressed critically the limits and advantages of these techniques and been able to measure some elastoplastic parameters of both phases. Specifically, we have analyzed by PF-QNM two nanostructured bainitic steels, with a finer and a coarser structure, and found that both phases have a similar Young's modulus.
authors.affiliation: Department of Physical Metallurgy, National Center for Metallurgical Research (CENIM-CSIC), Avda. Gregorio del Amo 8, 28040 Madrid, Spain.
authors.forename: Lucia
authors.initials: L
authors.lastname: Morales-Rivas
authors.affiliation: Departamento de Química Física, Facultad de Química, Universidad de La Laguna, 38206 Tenerife, Spain.
authors.forename: Alejandro
authors.initials: A
authors.lastname: González-Orive
authors.affiliation: Department of Physical Metallurgy, National Center for Metallurgical Research (CENIM-CSIC), Avda. Gregorio del Amo 8, 28040 Madrid, Spain.
authors.forename: Carlos
authors.initials: C
authors.lastname: Garcia-Mateo
authors.affiliation: Departamento de Química Física, Facultad de Química, Universidad de La Laguna, 38206 Tenerife, Spain.
authors.forename: Alberto
authors.initials: A
authors.lastname: Hernández-Creus
authors.affiliation: Department of Physical Metallurgy, National Center for Metallurgical Research (CENIM-CSIC), Avda. Gregorio del Amo 8, 28040 Madrid, Spain.
authors.forename: Francisca G
authors.initials: FG
authors.lastname: Caballero
authors.affiliation: Instituto de Ciencia de Materiales de Madrid, (ICMM-CSIC), Cantoblanco, 28049 Madrid, Spain.
authors.forename: Luis
authors.initials: L
authors.lastname: Vázquez