English
 
Help Privacy Policy Disclaimer
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT
  From single phase to dual-phase TRIP-TWIP titanium alloys: Design approach and properties

Lilensten, L., Danard, Y., Poulain, R., Guillou, R., Joubert, J.-M., Perrière, L., et al. (2020). From single phase to dual-phase TRIP-TWIP titanium alloys: Design approach and properties. Materialia, 12: 100700. doi:10.1016/j.mtla.2020.100700.

Item is

Basic

show hide
Genre: Journal Article

Files

show Files

Locators

show

Creators

show
hide
 Creators:
Lilensten, Lola1, 2, Author              
Danard, Yolaine3, Author              
Poulain, Raphaëlle3, Author
Guillou, R.4, Author
Joubert, Jean-Marc5, Author
Perrière, Loïc6, Author              
Vermaut, Philippe3, 7, Author              
Thiaudière, Dominique8, Author              
Prima, Frédéric3, Author              
Affiliations:
1Atom Probe Tomography, Microstructure Physics and Alloy Design, Max-Planck-Institut für Eisenforschung GmbH, Max Planck Society, ou_1863384              
2PSL Research University, Chimie ParisTech, Institut de Recherche de Chimie Paris, CNRS UMR 8247, Paris, France, ou_persistent22              
3PSL Research University, Chimie ParisTech-CNRS, Institut de Recherche de Chimie Paris, PARIS, 75005, France, ou_persistent22              
4DEN-Service de Recherches Métallurgiques Appliquées (SRMA), CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France, ou_persistent22              
5ICMPE (UMR 7182), CNRS, UPEC, Université Paris-Est, 2-8 Rue Henri Dunant, 94320 Thiais, France, ou_persistent22              
6Univ Paris Est Creteil, CNRS, ICMPE (UMR7182), 2 rue Henri Dunant, F-94320, Thiais, France, ou_persistent22              
7UFR926, Sorbonne Universités, UPMC Université Paris 06, 75005 Paris, France, ou_persistent22              
8Synchrotron SOLEIL, L'Orme des Merisiers, Saint-Aubin, Gif-sur-Yvette cedex, France, ou_persistent22              

Content

show
hide
Free keywords: Deformation; Linear transformations; Martensitic transformations; Strain hardening; Twinning; Yield stress, Back-scattered; Deformation mechanism; Deformation twinning; Design approaches; Design strategies; In-situ synchrotrons; Single phase; Twinning-induced plasticities, Titanium alloys
 Abstract: Aiming at increasing the yield strength of transformation and twinning induced plasticity (TRIP and TWIP) titanium alloys while maintaining a good work-hardening, a dual-phase α/β alloy is designed and studied. The composition Ti – 7 Cr – 1.5 Sn (wt.) is proposed, based on an approach coupling Calphad calculations and classical Bo-Md design tool used in Ti-alloys. Its microstructure is made of 20 of α precipitates in a β matrix, the matrix having optimal Bo and Md parameters for deformation twinning and martensitic transformation. The alloy indeed displays a yield strength of 760 MPa, about 200 MPa above that of a Ti – 8.5Cr – 1.5Sn (wt.) single β phase TRIP/TWIP alloy, combined with good work-hardening and ductility. In situ synchrotron X ray diffraction and post-mortem electron back-scattered analyses are performed to characterize the deformation mechanisms. They evidence that the TRIP and TWIP mechanisms are successfully obtained in the material, validating the design strategy. The interaction of the precipitates with the 332<113> β twins is analyzed, evidencing that the precipitates are sheared when hit by a twin, and therefore do not hinder the propagation of the twins. The nature of the interaction is discussed, as well as the impact of the precipitates on the mechanical properties. © 2020

Details

show
hide
Language(s): eng - English
 Dates: 2020-08
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: DOI: 10.1016/j.mtla.2020.100700
 Degree: -

Event

show

Legal Case

show

Project information

show

Source 1

show
hide
Title: Materialia
  Abbreviation : Materialia
Source Genre: Journal
 Creator(s):
Affiliations:
Publ. Info: Elsevier Ltd.
Pages: - Volume / Issue: 12 Sequence Number: 100700 Start / End Page: - Identifier: ISSN: 2589-1529
CoNE: https://pure.mpg.de/cone/journals/resource/2589-1529