Analysis of deformation mechanisms operating under fatigue and dwell-fatigue loadings in an α/β titanium alloy
| Autor: | S. Hémery, Patrick Villechaise, C. Lavogiez |
|---|---|
| Přispěvatelé: | Institut Pprime (PPRIME), Université de Poitiers-ENSMA-Centre National de la Recherche Scientifique (CNRS) |
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
β titanium
Diffraction Materials science dwell-fatigue Alloy twinning 02 engineering and technology Slip (materials science) Plasticity engineering.material Industrial and Manufacturing Engineering slip 0203 mechanical engineering [SPI.MECA.MEMA]Engineering Sciences [physics]/Mechanics [physics.med-ph]/Mechanics of materials [physics.class-ph] Titanium alloys General Materials Science Composite material Mechanical Engineering Titanium alloy 021001 nanoscience & nanotechnology 020303 mechanical engineering & transports Deformation mechanism Mechanics of Materials Modeling and Simulation engineering fatigue 0210 nano-technology Crystal twinning |
| Zdroj: | International Journal of Fatigue International Journal of Fatigue, Elsevier, 2020, 131, pp.105341. ⟨10.1016/j.ijfatigue.2019.105341⟩ |
| ISSN: | 0142-1123 |
| Popis: | International audience; This paper investigates the deformation processes operating in α grains of Ti-6Al-4V submitted to fatigue and dwell-fatigue loadings at room temperature. With this aim, mechanical tests were interrupted after a given number of cycles or cumulated plastic strain. Slip traces analysis combined with electron back-scattered diffraction enabled to evidence the operation of and slip, twinning and interface sliding. The main parameters controlling their activity were analyzed, in particular regarding the crystallographic orientation and the load hold duration. Based on this statistically sound investigation, the differences between fatigue and dwell-fatigue behaviors are finally discussed. |
| Databáze: | OpenAIRE |
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