Ultrasonic study of polycrystalline TMZF alloy at cryogenic temperatures
In this study, the phase stability of the polycrystalline TMFZ (Ti–12Mo–6Zr–2Fe, wt%) alloy, produced by electron beam melting and thermomechanically processed through swaging, was evaluated by ultrasonic measurements at cryogenic temperatures. XRD and SEM analyses at room temperature confirmed the...
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2025-09-01
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| Series: | Journal of Materials Research and Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S223878542501988X |
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| author | Ariel Omar Moreno Gobbi Paulo Sergio Silva Junior Diego Rafael Nespeque Correa Rafael Formenton Macedo dos Santos Javier Andrés Muñoz Chaves Carlos Roberto Grandini Conrado Ramos Moreira Afonso |
| author_facet | Ariel Omar Moreno Gobbi Paulo Sergio Silva Junior Diego Rafael Nespeque Correa Rafael Formenton Macedo dos Santos Javier Andrés Muñoz Chaves Carlos Roberto Grandini Conrado Ramos Moreira Afonso |
| author_sort | Ariel Omar Moreno Gobbi |
| collection | DOAJ |
| description | In this study, the phase stability of the polycrystalline TMFZ (Ti–12Mo–6Zr–2Fe, wt%) alloy, produced by electron beam melting and thermomechanically processed through swaging, was evaluated by ultrasonic measurements at cryogenic temperatures. XRD and SEM analyses at room temperature confirmed the presence of a major β phase as equiaxial grains and a minor α” phase in the form of acicular structures. Ultrasonic measurements were realized with 10 MHz ultrasonic pulses and the pulse-echo technique in cooling-heating cycles of temperature between room temperature and 150 K. Some anomalies in the ultrasonic attenuation and velocity at cryogenic temperatures were related to the alloy's phase transitions in the temperature range investigated. The anomaly observed at the lowest temperature investigated was compared with the diagram calculated using the CALPHAD, which predicted the formation of an ω phase (bcc crystalline structure) at low temperatures. This finding also supported some theoretical phase predictions for Ti's solid solutions. Detection of the α → ω phase transition at cryogenic temperatures in the TMFZ alloy can open new horizons for novel industrial applications, particularly those operating under extreme temperature conditions. |
| format | Article |
| id | doaj-art-8e7ba6ffd1d64dd9a3cde7e94a781e19 |
| institution | DOAJ |
| issn | 2238-7854 |
| language | English |
| publishDate | 2025-09-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj-art-8e7ba6ffd1d64dd9a3cde7e94a781e192025-08-20T03:04:58ZengElsevierJournal of Materials Research and Technology2238-78542025-09-01382010201510.1016/j.jmrt.2025.08.035Ultrasonic study of polycrystalline TMZF alloy at cryogenic temperaturesAriel Omar Moreno Gobbi0Paulo Sergio Silva Junior1Diego Rafael Nespeque Correa2Rafael Formenton Macedo dos Santos3Javier Andrés Muñoz Chaves4Carlos Roberto Grandini5Conrado Ramos Moreira Afonso6UdelaR, Institute of Physics, Faculty of Sciences, Ultrasonic Acoustics Laboratory, Igua, Montevideo, 4225, UruguayUniversidade Federal de São Carlos (UFSCar), Department of Physics, São Carlos, 13565-905, SP, BrazilSão Paulo State University (UNESP), School of Sciences, Laboratorio de Anelasticidade e Biomateriais, Bauru, 17.033-360, SP, BrazilUniversidade Federal de São Carlos (UFSCar), Graduate Program in Materials Science and Engineering (PPG-CEM), São Carlos, 13565-905, SP, Brazil; Universidade Federal de São Carlos (UFSCar), Department of Materials Engineering (DEMa/BioMet-CAM), São Carlos, 13565-905, SP, BrazilCorporación Universitaria Comfacauca-Unicomfacauca, Faculty of Engineering, Intelligent System Research Group, Popayan, 190003, ColombiaSão Paulo State University (UNESP), School of Sciences, Laboratorio de Anelasticidade e Biomateriais, Bauru, 17.033-360, SP, BrazilUniversidade Federal de São Carlos (UFSCar), Graduate Program in Materials Science and Engineering (PPG-CEM), São Carlos, 13565-905, SP, Brazil; Universidade Federal de São Carlos (UFSCar), Department of Materials Engineering (DEMa/BioMet-CAM), São Carlos, 13565-905, SP, Brazil; Corresponding author. Universidade Federal de São Carlos (UFSCar), Graduate Program in Materials Science and Engineering (PPG-CEM), São Carlos, 13565-905, SP, BrazilIn this study, the phase stability of the polycrystalline TMFZ (Ti–12Mo–6Zr–2Fe, wt%) alloy, produced by electron beam melting and thermomechanically processed through swaging, was evaluated by ultrasonic measurements at cryogenic temperatures. XRD and SEM analyses at room temperature confirmed the presence of a major β phase as equiaxial grains and a minor α” phase in the form of acicular structures. Ultrasonic measurements were realized with 10 MHz ultrasonic pulses and the pulse-echo technique in cooling-heating cycles of temperature between room temperature and 150 K. Some anomalies in the ultrasonic attenuation and velocity at cryogenic temperatures were related to the alloy's phase transitions in the temperature range investigated. The anomaly observed at the lowest temperature investigated was compared with the diagram calculated using the CALPHAD, which predicted the formation of an ω phase (bcc crystalline structure) at low temperatures. This finding also supported some theoretical phase predictions for Ti's solid solutions. Detection of the α → ω phase transition at cryogenic temperatures in the TMFZ alloy can open new horizons for novel industrial applications, particularly those operating under extreme temperature conditions.http://www.sciencedirect.com/science/article/pii/S223878542501988XTi alloyTMZFCryogenic temperaturePhase transitionUltrasonic characterization |
| spellingShingle | Ariel Omar Moreno Gobbi Paulo Sergio Silva Junior Diego Rafael Nespeque Correa Rafael Formenton Macedo dos Santos Javier Andrés Muñoz Chaves Carlos Roberto Grandini Conrado Ramos Moreira Afonso Ultrasonic study of polycrystalline TMZF alloy at cryogenic temperatures Journal of Materials Research and Technology Ti alloy TMZF Cryogenic temperature Phase transition Ultrasonic characterization |
| title | Ultrasonic study of polycrystalline TMZF alloy at cryogenic temperatures |
| title_full | Ultrasonic study of polycrystalline TMZF alloy at cryogenic temperatures |
| title_fullStr | Ultrasonic study of polycrystalline TMZF alloy at cryogenic temperatures |
| title_full_unstemmed | Ultrasonic study of polycrystalline TMZF alloy at cryogenic temperatures |
| title_short | Ultrasonic study of polycrystalline TMZF alloy at cryogenic temperatures |
| title_sort | ultrasonic study of polycrystalline tmzf alloy at cryogenic temperatures |
| topic | Ti alloy TMZF Cryogenic temperature Phase transition Ultrasonic characterization |
| url | http://www.sciencedirect.com/science/article/pii/S223878542501988X |
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