التفاصيل البيبلوغرافية
| العنوان: |
High temperature tensile properties of β-γ-γ’-MCrAlY and β-Ni(Al,Pt) bond-coatings and interdiffusion zone with Ni-based single crystal superalloys |
| المؤلفون: |
Texier, Damien, Andrieu, Eric, Selezneff, Serge, Longuet, Arnaud, Crabos, Fabrice, Monceau, Daniel |
| المساهمون: |
Centre interuniversitaire de recherche et d'ingénierie des matériaux (CIRIMAT), Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut de Chimie - CNRS Chimie (INC-CNRS)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT), Institut Clément Ader (ICA), Institut Supérieur de l'Aéronautique et de l'Espace (ISAE-SUPAERO)-Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS)-IMT École nationale supérieure des Mines d'Albi-Carmaux (IMT Mines Albi), Institut Mines-Télécom Paris (IMT)-Institut Mines-Télécom Paris (IMT), Safran Aircraft Engines, Safran Helicopter Engines |
| المصدر: |
ECI Thermal Barrier Coatings V ; https://hal.science/hal-02359368 ; ECI Thermal Barrier Coatings V, Jun 2018, Irsee, Germany ; http://www.engconf.org/conferences/materials-science-including-nanotechnology/thermal-barrier-coatings-v-2/ |
| بيانات النشر: |
HAL CCSD |
| سنة النشر: |
2018 |
| المجموعة: |
Université Toulouse III - Paul Sabatier: HAL-UPS |
| مصطلحات موضوعية: |
high temperature tensile testing, ductile-to-brittle transition temperature, Brittle Fracture, Brittle and ductile deformation, Freestanding, bond-coating, Interdiffusion, [PHYS.MECA.MEMA]Physics [physics]/Mechanics [physics]/Mechanics of materials [physics.class-ph], [SPI.NANO]Engineering Sciences [physics]/Micro and nanotechnologies/Microelectronics, [SPI.MAT]Engineering Sciences [physics]/Materials, [SPI]Engineering Sciences [physics] |
| جغرافية الموضوع: |
Irsee, Germany |
| الوصف: |
International audience ; MCrAlY overlay coatings and Pt-modified aluminide diffusion coatings are commonly used in thermal barrier coating (TBC) systems for turbine blade and vane applications. Purposely designed for oxidation and corrosion protection, MCrAlY and aluminide coatings have a ductile-to-brittle transition temperature (DBTT) of about 600 to 800°C, i.e. in the temperature range of service conditions. Therefore, these coatings can be a source of premature crack initiation under thermomechanical loading at low/intermediate temperature. They also creep at high temperature. This drastic change in local mechanical properties significantly impair the structural integrity of such multi-layered materials. Current damage-tolerant design of TBC systems preferentially deals with DBTT than with the effective temperature- and time-dependent mechanical properties of the individual layers constituting the TBC systems. Data on high temperature properties of the bond-coatings and the interdiffusion zone with the substrate are lacking. Indeed, these local properties are particularly difficult to assess up to 1100°C, both using freestandinglayer[1–4] or multi-layer specimen approaches[5]. Improvements in the prediction of the mechanical behavior and the lifetime of TBC systems require the understanding and the quantification of such local mechanical properties. In the present study, the tensile properties of thin freestanding MCrAlY overlay coatings and Pt-modified aluminide diffusion coating specimens were investigated in a large range of temperatures, representative of service conditions. Freestanding specimens were both extracted and tensile tested for the bond-coating itself, but also for the interdiffusion zone and the substrate in order to document the gradient of properties within the TBC systems. The ductile-to-brittle transition behavior was shown and a significant ductility was evidenced for both the bondcoatings above the DBTT. The interdiffusion zone exhibited intermediate properties between those of the ... |
| نوع الوثيقة: |
conference object |
| اللغة: |
English |
| الاتاحة: |
https://hal.science/hal-02359368 |
| رقم الانضمام: |
edsbas.4B976FAB |
| قاعدة البيانات: |
BASE |