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On the elasto-viscoplastic behavior of the Ti5553 alloy

Article dans une revue avec comité de lecture
Auteur
ccBEN BETTAIEB, Mohamed
178323 Laboratoire d'Etude des Microstructures et de Mécanique des Matériaux [LEM3]
VAN HOOF, Thibaut
301273 Fonds de la Recherche Scientifique [FNRS]
PARDOEN, Thomas
92863 Université Catholique de Louvain = Catholic University of Louvain [UCL]
DUFOUR, Philippe
92863 Université Catholique de Louvain = Catholic University of Louvain [UCL]
LENAIN, Astrid
92863 Université Catholique de Louvain = Catholic University of Louvain [UCL]
JACQUES, Pascal J.
92863 Université Catholique de Louvain = Catholic University of Louvain [UCL]
HABRAKEN, Anne-Marie
237215 Departement Architecture, Géologie, Environnement et Constructions - ArGEnCo (Liège, Belgium)

URI
http://hdl.handle.net/10985/11196
DOI
10.1016/j.msea.2014.08.055
Date
2014
Journal
Materials Science and Engineering: A

Résumé

The elastoviscoplastic behavior of the Ti5553 alloy is characterized and compared to the classical Ti–6Al–4V alloy. The true stress–strain curves are determined based on tensile tests performed under different strain rates at room temperature and at 1501C, from which the elastic constants and the parameters of a Norton–Hoff viscoplastic model are identified. The strength of the Ti5553 alloy is 20–40% higher than the strength of the Ti–6Al–4V alloy. The Ti5553 alloy constitutes thus a promising candidate for advanced structural applications. In view of modeling structural applications of forming operations, the elastic and plastic initial anisotropy of the two alloys is investigated by combining compression on cylinders with elliptical sections, uniaxial tensile tests in different material directions, plane strain and shear tests. The initial anisotropy of the different alloys is very weak which justifies the modeling of the mechanical behavior with an isotropic yield surface. The identified elastoviscoplastic model is validated by comparing experimental results with FE predictions both on cylindrical notched specimens subjected to tensile tests and onflat specimens subjected to plane strain conditions.

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Documents liés

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  • Micromechanics-Based Damage Analysis of Fracture in Ti5553 Alloy with Application to Bolted Sectors 
    Article dans une revue avec comité de lecture
    ccBEN BETTAIEB, Mohamed; VAN HOOF, Thibaut; MINNEBO, Hans; PARDOEN, Thomas; DUFOUR, Philippe; JACQUES, Pascal J.; HABRAKEN, Anne-Marie (Springer Verlag/ASM International, 2015)
    A physics-based, uncoupled damage model is calibrated using cylindrical notched round tensile specimens made of Ti5553 and Ti-6Al-4V alloys. The fracture strain of Ti5553 is lower than for Ti-6Al-4V in the full range of ...
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    BOUFFIOUX, Chantal; BOMAN, Romain; CAILLET, Nicolas; PONTHOT, Jean-Philippe; HABRAKEN, Anne-Marie; ccPESCI, Raphaël (Elsevier, 2016)
    Sheet piles are produced by hot rolling, a cooling step and, if required, by a straightening operation. Numerical simulations indicate that the stress field is almost homogeneous through the thickness, justifying the ...
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    ccBALAN, Tudor; LEMOINE, Xavier; MAIRE, Eric; HABRAKEN, Anne-Marie (Elsevier, 2015)
    This paper is a contribution to the phenomenological modeling of damage evolution in DP steels in the framework of Gurson's approach. It is based on recent results of X-ray tomography in-situ tensile tests and subsequent ...
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    RIQUET, Anne-Marie; DELATTRE, Jennifer; VITRAC, Olivier; GUINAULT, Alain (Elsevier, 2013)
    Surface modification of polypropylene (PP) sheets was carried out by radiation induced graft polymer- ization of hydrophilic functional molecules such as N,N-dimethylacrylamide (DMA) and [2-methacry- loyloxy)ethyl] ...
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    CAUCHON, Anne-Marie; TÉTREAULT, Patrice; BASCANS, Clarisse; ccSKALLI, Wafa; HAGEMEISTER, Nicola (Elsevier BV, 2020)
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