CIEFMA - Centre d'Integritat Estructural, Micromecànica i Fiabilitat dels Materials

 

CIEFMA és un grup de recerca consolidat de la UPC amb l'objectiu de realitzar ciències bàsiques i investigacions industrials aplicades en l'àmbit de la integritat estructural, la micromecànica i la fiabilitat dels materials d'enginyeria. Les principals competències bàsiques de CIEFMA es defineixen mitjançant: (1) la seva capacitat per avaluar i comprendre amb èxit la integritat mecànica i la fiabilitat dels materials objectiu de CIEFMA (ceràmica base de zirconi, acers inoxidables i d'alta resistència, aliatges de base Ti, composites de ceràmica i metall - especialment carburs cimentats i recobriments durs) a diferents escales de longitud; i (2) el seu potencial per implementar processos avançats per optimitzar el disseny microestructural i / o la funcionalitat de sistemes de materials específics. Dins del marc esmentat, l'excel·lència en la recerca, la internacionalització i la transferència eficaç de coneixement són pilars transversals, vinculats a enfocaments "multidisciplinaris" i "intersectorials", per definir els objectius estratègics de CIEFMA; i, per tant, la seva activitat científica.

CIEFMA es un grupo de investigación consolidado de la UPC que tiene como objetivo realizar estudios de ciencia básica e investigación industrial aplicada en el campo de la integridad estructural, micromecánica y confiabilidad de los materiales de ingeniería. Las principales competencias básicas de CIEFMA se definen por (1) su capacidad para evaluar y comprender con éxito la integridad mecánica y la confiabilidad de los materiales de CIEFMA (cerámicas con base de circonia, aceros inoxidables y de alta resistencia, aleaciones con base de Ti, compuestos de cerámica y metal) particularmente carburos cementados (y recubrimientos duros) a diferentes escalas de longitud; y (2) su potencial para implementar procesamiento avanzado hacia la optimización del diseño microestructural y / o la funcionalidad de sistemas de materiales específicos. Dentro del marco anterior, la excelencia en la investigación, la internacionalización y la transferencia efectiva de conocimientos son pilares transversales, vinculados a través de enfoques “multidisciplinarios” e “intersectoriales”, para definir los objetivos estratégicos de CIEFMA; Y así, su actividad científica.

CIEFMA is a UPC’s consolidated research group aiming to conduct basic science and applied industrial research within the field of Structural Integrity, Micromechanics and Reliability of Engineering Materials. CIEFMA’s main core competences are defined by (1) its capability for successful assessment and understanding of mechanical integrity and reliability of CIEFMA-target materials (zirconia-base ceramics, stainless and high-strength steels, Ti-base alloys, ceramic-metal composites - particularly cemented carbides - and hard coatings) at different length scales; and (2) its potential for implementing advanced processing towards optimizing microstructural design and/or functionality of specific material systems. Within the above framework, research excellence, internationalization and effective knowledge transfer are transversal pillars, linked through “multidisciplinary” and “inter-sectorial” approaches, for defining CIEFMA’s strategic objectives; and thus, its scientific activity.

CIEFMA is a UPC’s consolidated research group aiming to conduct basic science and applied industrial research within the field of Structural Integrity, Micromechanics and Reliability of Engineering Materials. CIEFMA’s main core competences are defined by (1) its capability for successful assessment and understanding of mechanical integrity and reliability of CIEFMA-target materials (zirconia-base ceramics, stainless and high-strength steels, Ti-base alloys, ceramic-metal composites - particularly cemented carbides - and hard coatings) at different length scales; and (2) its potential for implementing advanced processing towards optimizing microstructural design and/or functionality of specific material systems. Within the above framework, research excellence, internationalization and effective knowledge transfer are transversal pillars, linked through “multidisciplinary” and “inter-sectorial” approaches, for defining CIEFMA’s strategic objectives; and thus, its scientific activity.

Recent Submissions

  • Corrosion-induced changes on Hertzian contact damage in cemented carbides 

    Zheng, Yafeng; Fargas Ribas, Gemma; Lavigne, Olivier; Roitero, Erica; Llanes Pitarch, Luis Miguel (2020-11-01)
    Article
    Restricted access - publisher's policy
    In this study, the influence of corrosion on the mechanical response and damage induced under Hertzian indentation is assessed for three cemented carbides with metallic binders of different chemical nature. Corrosion ...

  • Superficial effects of ball burnishing on TRIP steel AISI 301LN sheets 

    Jerez Mesa, Ramón; Fargas Ribas, Gemma; Roa Rovira, Joan Josep; Llumà Fuentes, Jordi; Travieso Rodriguez, Jose Antonio (Multidisciplinary Digital Publishing Institute (MDPI), 2021-01-03)
    Article
    Open Access
    This paper explores the consequences of applying an ultrasonic vibration-assisted ball burnishing process and its non-vibration assisted version on the topology and subsurface microstructure of a transformation-induced ...

  • Cyclic contact fatigue of cemented carbides under dry and wet conditions: Correlation between microstructure, damage and electrochemical behavior 

    Roa Rovira, Joan Josep; Simison, Sílvia Noemí; Grasso, J.; Arcidiacono, M.; Escalada, Lisandro; Soldera, Flavio; García, José; Sosa, Amadeo Daniel (2020-11-01)
    Article
    Restricted access - publisher's policy
    The correlation between the damage induced under cyclic contact fatigue and their electrochemical behavior (anodic polarization curves) for different WC-Co-based cemented carbides grades was investigated at the macrometric ...

  • Metales ‘de cine’: el juego de las ‘siete’ diferencias 

    Bolancer, Isis; Salán Ballesteros, Maria Núria (2020-12-09)
    Article
    Restricted access - publisher's policy
    Los metales han sido siempre tesoros ocultos, gracias a los cuales, la humanidad ha podido evolucionar y alcanzar niveles superiores en el juego de la vida. Son las pequeñas llaves con las que desbloquear nuevos hallazgos, ...

  • Performance of laser surface textured cemented carbide tools during abrasive machining: Coating effects, surface integrity assessment and wear characterization 

    Fang, Shiqi; Klein, Sven; Bähre, Dirk; Llanes Pitarch, Luis Miguel (Elsevier, 2020-11-01)
    Article
    Restricted access - publisher's policy
    Laser surface texturing (LST) and coating deposition are implemented on cemented carbide (WC-CoNi) tools to extent their application in abrasive-like machining processes. The topographic features of a conventional cubic ...

  • Assessment of wear micromechanisms on a laser textured cemented carbide tool during abrasive-like machining by FIB/FESEM 

    Fang, Shiqi; Bähre, Dirk; Llanes Pitarch, Luis Miguel (2020-11-02)
    Article
    Open Access
    The combined use of focused ion beam (FIB) milling and field-emission scanning electron microscopy inspection (FESEM) is a unique and successful approach for assessment of near-surface phenomena at specific and selected ...

  • Novel mechanical characterization of austenite and ferrite phases within duplex stainless steel 

    Besharatloo, H.; Carpio Garza, Marcel Francisco; Cabrera Marrero, José M.; Mateo García, Antonio Manuel; Fargas Ribas, Gemma; Wheeler, Jeffrey; Roa Rovira, Joan Josep; Llanes Pitarch, Luis Miguel (Multidisciplinary Digital Publishing Institute (MDPI), 2020-10)
    Article
    Open Access

  • Design of alternative binders for hard materials 

    Nicolás, M. de; Besharatloo, Hossein; Alvaredo Olmos, Paula; Roa Rovira, Joan Josep; Llanes Pitarch, Luis Miguel; Gordo Odériz, Elena (2020-02-01)
    Article
    Restricted access - publisher's policy
    In the last years, a special interest has emerged towards the total or partial substitution of traditional cemented carbides composing elements. In this study, a systematic methodology is presented and used to design ...

  • Influence of the processing route on the properties of Ti(C,N)-Fe15Ni cermets 

    Nicolás Morillas, Maria de; Besharatloo, Hossein; Wheeler, J.M.; Dios Pérez, Miguel de; Alvaredo Olmos, Paula; Roa Rovira, Joan Josep; Ferrari, B; Llanes Pitarch, Luis Miguel; Gordo Odériz, Elena (2020-02-01)
    Article
    Restricted access - publisher's policy
    This study aims to understand the influence of powder preparation and processing steps on the microstructure and properties of Ti(C,N)-Fe15Ni cermets with 70 and 80 vol% of ceramic phase. Two routes were used for powder ...

  • Epoxy-silica/clay nanocomposite for silver-based antibacterial thin coatings: structure and ionic mobility 

    Giraldo Mejía, Hugo Fernando; Jiménez Piqué, Emilio; Valdés, Matías; Procaccini, Raúl; Pellice, Sergio (2020-07-28)
    Article
    Restricted access - publisher's policy
    A novel material was developed using sol-gel chemistry and an environmental-friendly grafting process of clay nanoparticles. In a previous work of our group, highly compact coatings had been generated using silicon alkoxides, ...

  • Influence of the microstructure on corrosion induced damage of WC-Co cemented carbides 

    Fargas Ribas, Gemma; Sosa, D.; Tarragó, José María; Tarrés Puit, Elena; Fair, Jonathan; Llanes Pitarch, Luis Miguel (2020-05-27)
    Article
    Restricted access - publisher's policy
    The main goal of the present work is to study the influence of the microstructure on the corrosion behavior of cemented carbides WC-Co in two corrosive media. Corrosion kinetics were determined by immersion tests while the ...

  • Influence of grinding/polishing on the mechanical, phase stability and cell adhesion properties of yttria-stabilized zirconia 

    Minguela Díaz, Joaquim; Ginebra Molins, Maria Pau; Llanes Pitarch, Luis Miguel; Mas Moruno, Carlos; Roa Rovira, Joan Josep (Elsevier, 2020-09)
    Article
    Restricted access - publisher's policy
    The changes in mechanical properties, hydrothermal degradation and cell adhesion were studied in 3Y-TZP under two different superficial modification patterns (uni- and multidirectional) with a surface roughness ranging ...

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