Now showing items 1-7 of 7

    • Alternative thermal cycling treatment to produce abnormal grain growth in feMnAlNi alloys: study of composition variations and effects on the relative phase stabilities 

      La Roca, Paulo Matías Upna; Guerrero, L.M.; Baruj, A.; Vallejos, J. M.; Sade, M. (Springer, 2021)   Artículo / Artikulua  OpenAccess
      An alternative method to obtain abnormal grain growth in Fe–Mn–Al–Ni system is presented. A crucible is used to control the cooling speed of the samples from 1200 °C enabling the nucleation of the equilibrium fcc phase. ...
    • Designing a wider superelastic window 

      La Roca, Paulo Matías Upna; Sade, M. (American Association for the Advancement of Science, 2020)   Artículo / Artikulua  OpenAccess
      Adding chromium to an iron alloy enables shape recovery over a wide temperature range
    • Effect of high-energy ball-milling on the magnetostructural properties of a Ni45Co5Mn35Sn15 alloy 

      López García, José Luis Upna Orcid; Sánchez-Alarcos Gómez, Vicente Upna Orcid; Recarte Callado, Vicente Upna Orcid; Rodríguez Velamazán, José Alberto; Unzueta, Iraultza; García, José Ángel; Plazaola, Fernando; La Roca, Paulo Matías Upna; Pérez de Landazábal Berganzo, José Ignacio Upna Orcid (Elsevier, 2021)   Artículo / Artikulua
      The effect of high-energy ball-milling on the magnetostructural properties of a Ni45Co5Mn35Sn15 alloy in austenitic phase at room temperature has been analyzed by neutron and high-resolution X-ray diffraction. The ball ...
    • Martensitic transformation controlled by electromagnetic field: from experimental evidence to wireless actuator applications 

      Garayo Urabayen, Eneko Upna Orcid; La Roca, Paulo Matías Upna; Gómez Polo, Cristina Upna Orcid; Sánchez-Alarcos Gómez, Vicente Upna Orcid; Recarte Callado, Vicente Upna Orcid; Pérez de Landazábal Berganzo, José Ignacio Upna Orcid (Elsevier, 2022)   Artículo / Artikulua  OpenAccess
      Mechanical actuators based on shape memory alloys (SMA) are becoming a key component in the development of novel soft robotic applications and surgically implantable devices. Their working principle relies in the temperature ...
    • Room temperature huge magnetocaloric properties in low hysteresis ordered Cu-doped Ni-Mn-In-Co alloys 

      La Roca, Paulo Matías Upna; López García, Javier Upna; Sánchez-Alarcos Gómez, Vicente Upna Orcid; Recarte Callado, Vicente Upna Orcid; Rodríguez-Velamazán, José Alberto; Pérez de Landazábal Berganzo, José Ignacio Upna Orcid (Elsevier, 2022)   Artículo / Artikulua
      The reduction of the thermal hysteresis in first order magnetostructural transition is a determining factor to decrease energy losses and to improve the efficiency of magnetocaloric cooling based systems. In this work, a ...
    • A short review on the effect of Cr on the fcc-hcp phase transition in Fe-Mn-based alloys 

      Guerrero, L.M.; La Roca, Paulo Matías Upna; Malamud, M.F.; Baruj, A.; Sade, M. (Springer, 2020)   Artículo / Artikulua  OpenAccess
      The effect of Cr on the fcc–hcp martensitic transformation in the Fe–Mn–Cr system has been discussed considering different aspects: (a) the relative phase stabilities, (b) the magnetic order of the fcc phase, (c) ...
    • Strategies to increase austenite FCC relative phase stability in high-Mn steels 

      Guerrero, L.M.; La Roca, Paulo Matías Upna; Malamud, M.F.; Butera, A.; Baruj, A.; Sade, M. (Elsevier, 2021)   Artículo / Artikulua  OpenAccess
      Several strategies to increase the FCC austenite stability compared to BCC and HCP martensites have been tested and are discussed. The relative stability of the different phases was analyzed by studying the effects of: a) ...