Reference : On the optimisation of the mechanical properties of two aluminium-alloyed multiphase TRI...
Scientific congresses and symposiums : Paper published in a book
Engineering, computing & technology : Materials science & engineering
http://hdl.handle.net/2268/105216
On the optimisation of the mechanical properties of two aluminium-alloyed multiphase TRIP-assisted steels
English
Mertens, Anne mailto [Delft University of Technology > Laboratory for Materials Science > > >]
Jacques, Pascal J. [Université Catholique de Louvain - UCL > Département des Sciences des Matériaux et des Procédés > > >]
Harlet, Philippe [Arcelor Group > RDCS > > >]
Delannay, Francis [Université Catholique de Louvain - UCL > Département des Sciences des matériaux et des Procédés > > >]
Jun-2002
Proccedings of the International Conference on TRIP-Aided High Strength Ferrous Alloys
De Cooman, Bruno C.
Yes
No
International
International Conference on TRIP-Aided High Strength Ferrous Alloys
Du 19 au 21 juin 2002
Gand
Belgique
[en] TRIP Steels ; Mechanical properties ; Microstructure
[en] Aluminium-alloyed multiphase TRIP-assisted steels have been recently developed, so as to get rid of the disdavantages related to the high silicon contents classically used so far in TRIP-assisted steels. It has been shown that aluminium has a stronger ferritising effect than silicon and that it is slightly less efficient as far as austenite retention is concerned. A careful selection of the aluminium content and of the processing conditions is thus of primary importance in order to optimise the mechanical properties. The present study aims at determining the optimal heat treatment conditions leading to enhanced mechanical properties for two low aluminium-alloyed grades containing with mass contents of 0.12% C, 1.5% Mn and 0.5% Al or 1.0% Al, respectively. The microstructures generated during the heat treatment were assessed using SEM, X-ray diffraction and Mössbauer spectrometry. The mechanical properties were evaluated by uniaxial tensilte testing and the strain-hardening behaviour was characterised by means of an incremental strain-hardening exponent. The relations between the observed microstructures and the mechanical properties were discussed and, as a consequence, the importance of a careful control of the isothermal bainitic holding was highlighted.
Researchers ; Professionals
http://hdl.handle.net/2268/105216

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