Microstructural modeling of cold creep/fatigue in near alpha titanium alloys using cellular automata method
| Autor: | Frank Montheillet, Philippe Bocher, David Piot, Mohammad Jahazi, N. Boutana |
|---|---|
| Přispěvatelé: | Department of Mechanical Engineering, École Polytechnique de Montréal (EPM), Centre des technologies de fabrication en aérospatiale, institut de recherche aérospatiale, Centre Science des Matériaux et des Structures (SMS-ENSMSE), École des Mines de Saint-Étienne (Mines Saint-Étienne MSE), Institut Mines-Télécom [Paris] (IMT)-Institut Mines-Télécom [Paris] (IMT), Département Microstructures et Traitements Thermomécaniques (MTT-ENSMSE), Institut Mines-Télécom [Paris] (IMT)-Institut Mines-Télécom [Paris] (IMT)-SMS, Science et Ingénierie des Matériaux et Procédés (SIMaP), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National Polytechnique de Grenoble (INPG)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Fraczkiewicz, Anna, Ecole de Technologie Supérieure [Montréal] (ETS), Plasticité, Endommagement et Corrosion des Matériaux (PECM-ENSMSE), Institut Mines-Télécom [Paris] (IMT)-Institut Mines-Télécom [Paris] (IMT)-SMS-Centre National de la Recherche Scientifique (CNRS) |
| Jazyk: | angličtina |
| Rok vydání: | 2007 |
| Předmět: |
microstructure modeling
Materials science Alloy chemistry.chemical_element 02 engineering and technology Ti forging engineering.material [SPI.MAT] Engineering Sciences [physics]/Materials 01 natural sciences 010305 fluids & plasmas [SPI.MAT]Engineering Sciences [physics]/Materials ELLIPSOIDAL INCLUSION 0103 physical sciences COMPOSITES Texture (crystalline) Composite material ComputingMilieux_MISCELLANEOUS Dwell fatigue Mechanical Engineering Numerical analysis cellular automata Metallurgy Titanium alloy MECHANICAL-BEHAVIOR 021001 nanoscience & nanotechnology Microstructure Cellular automaton Creep chemistry ELASTIC FIELD engineering 0210 nano-technology Titanium |
| Zdroj: | 11th World Conf. on Titanium 11th World Conf. on Titanium, 2007, Kyoto, Japan. à paraître Transactions of the Canadian Society for Mechanical Engineering Transactions of the Canadian Society for Mechanical Engineering, Canadian Society for Mechanical Engineering, 2008, 32 (2), pp.195-211 HAL Scopus-Elsevier |
| ISSN: | 0315-8977 |
| Popis: | It is well known that the presence of large heterogeneous textured regions in forged near alpha titanium alloys could lead to large variations of mechanical properties when fatigue and creep cycles are applied at room temperature. On the other hand, experimental studies and microtexture investigations are complex to set up, lengthy and costly, and one cannot expect to understand the alloy behavior by relying only on empirical approaches. Hence, numerical methods are excellent alternatives for analyzing the influence of microscopic and macroscopic heterogeneities on mechanical properties in shorter times and with minimum need for experimentation. In the present investigation, a cellular automata (CA) method was used to simulate the effect of texture heterogeneities, on both local and global mechanical properties. A 2D array of cells was used and the stresses and strains developed in various heterogeneous regions were evaluated using the Eshelby theory. Using the CA method, various types of microstructures were modeled and compared with each other to quantify the influence of processing parameters on mechanical properties. The results predict, and are used to explain, the experimentally phenomena observed in creep responses during cold fatigue/creep tests of near alpha titanium samples. available unclassified unlimited |
| Databáze: | OpenAIRE |
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