• français
    • English
    français
  • Login
Help
View Item 
  •   Home
  • Laboratoire Angevin de Mécanique, Procédés et InnovAtion (LAMPA)
  • View Item
  • Home
  • Laboratoire Angevin de Mécanique, Procédés et InnovAtion (LAMPA)
  • View Item
JavaScript is disabled for your browser. Some features of this site may not work without it.

An experimental investigation of the behaviour of steels over large temperature and strain rate ranges

Article dans une revue avec comité de lecture
Author
HOR, Anis
ccMOREL, Franck
206863 Laboratoire des Arts et Métiers ParisTech d'Angers - Procédés Matériaux Durabilité [LAMPA - PMD]
LEBRUN, Jean-Lou
ccGERMAIN, Guénaël

URI
http://hdl.handle.net/10985/8604
DOI
10.1016/j.ijmecsci.2013.01.003
Date
2013
Journal
International Journal of Mechanical Sciences

Abstract

During forging and machining manufacturing processes, the material is subject to large strains at high strain rates which provoke local heating and microstructural changes. Modelling of these phenomena requires precise knowledge of the stress–strain constitutive equations for a large range of strains, strain rates and temperatures. An experimental study of the rheology of both hyper- and hypo-eutectoid steels (with different microstructures) over a temperature range from 20°C to 1000°C and with strain rates from 0.01 to 100 000 s-1 has been undertaken. These tests were performed in compression on cylindrical specimens and in shear using hat-shaped specimens. Both a GLEEBLE 3500 thermomechanical testing machine and a Split-Hopkinson Pressure Bar apparatus were used. From these tests, three deformation domains have been identified as a function of the material behaviour and of the changes in the deformed microstructure. Each domain was characterized by its behaviour, including the competition between hardening and softening, strain rate sensitivity on the flow stress and the softening phenomenon (i.e. recrystallisation or recovery, etc.). Finally, based on thermodynamical considerations, the conditions of thermoplastic instability (i.e. shear bands, twinning, heterogeneities, etc.) and microstructural changes are highlighted using process maps of the dissipated power repartition.

Files in this item

Name:
LAMPA_IJMS_MOREL_2013.pdf
Size:
1.765Mb
Format:
PDF
View/Open

Collections

  • Laboratoire Angevin de Mécanique, Procédés et InnovAtion (LAMPA)

Related items

Showing items related by title, author, creator and subject.

  • Modelling, identification and application of phenomenological constitutive laws over a large strain rate and temperature range 
    Article dans une revue avec comité de lecture
    HOR, Anis; ccMOREL, Franck; LEBRUN, Jean-Lou; ccGERMAIN, Guénaël (Elsevier, 2013)
    A review of the different phenomenological thermo-viscoplastic constitutive models often applied to forging and machining processes is presented. Several of the most common models have been identified using a large ...
  • The influence of laser assistance on the machinability of the titanium alloy Ti555-3 
    Article dans une revue avec comité de lecture
    BRAHAM-BOUCHNAK, Tarek; ccGERMAIN, Guénaël; MOREL, Anne; LEBRUN, Jean-Lou (Springer Verlag, 2013)
    The Ti533-3 alloy is a new titanium alloy which is starting to see increased use in the aeronautical domain to improve the durability of components and to optimize the weight/resistance ratio. This alloy is characterized ...
  • A Biaxial Fatigue Specimen for Uniaxial Loading 
    Article dans une revue avec comité de lecture
    ccBELLETT, Daniel; ccMOREL, Franck; MOREL, Anne; LEBRUN, Jean-Lou (Wiley-Blackwell, 2011)
    The aim of this paper is to present a novel un-notched fatigue test specimen in which a biaxial stress state is achieved using a uniaxial loading condition. This allows the problem of multi-axial fatigue to be studied using ...
  • Comprehension of chip formation in laser assisted machining 
    Article dans une revue avec comité de lecture
    ccGERMAIN, Guénaël; DAL SANTO, Philippe; LEBRUN, Jean-Lou (Elsevier, 2011)
    Laser Assisted Machining (LAM) improves the machinability of materials by locally heating the workpiece just prior to cutting. Experimental investigations have confirmed that the cutting force can be decreased, by as much ...
  • High pressure water jet assisted machining of duplex steel: machinability and tool life 
    Article dans une revue avec comité de lecture
    BRAHAM-BOUCHNAK, Tarek; ccGERMAIN, Guénaël; ROBERT, Patrick; LEBRUN, Jean-Lou (Springer Verlag, 2010)
    High pressure water jet assisted turning (HPWJAT) consists of projecting a high pressure water jet, up to several hundred bar, into the tool-workpiece interface. The water jet is directed between the chip and the tool ...

Browse

All SAMCommunities & CollectionsAuthorsIssue DateCenter / InstitutionThis CollectionAuthorsIssue DateCenter / Institution

Newsletter

Latest newsletterPrevious newsletters

Statistics

Most Popular ItemsStatistics by CountryMost Popular Authors

ÉCOLE NATIONALE SUPERIEURE D'ARTS ET METIERS

  • Contact
  • Mentions légales

ÉCOLE NATIONALE SUPERIEURE D'ARTS ET METIERS

  • Contact
  • Mentions légales