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In-situ Neutron Diffraction Study of the Deformation Behaviour of two High-Manganese Austenitic Steels
Linköping University, Department of Management and Engineering, Engineering Materials. Linköping University, The Institute of Technology.
Northeastern University, Shenyang, China.
Key Lab for Anisotropy & Texture of Mater., Northeastern Univ., Shenyang, China and Beijing Institute of Technology, Beijing, China.
ISIS Facility, CCLRC Rutherford Appleton lab, Didcot, UK.
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2011 (English)In: Materials Science Forum, ISSN 0255-5476, Vol. 681, 474-479 p.Article in journal (Refereed) Published
Abstract [en]

In-situ neutron diffraction experiments under tensile loading were carried out to study the micromechanical behaviour of two iron-manganese based steels, a TWIP (twinning induced plasticity) steel with 30 wt% Mn and a TRIP steel (transformation induced plasticity) with 20 wt% Mn. The former was loaded to 31.3% strain and the latter to 20% strain. The 30 wt.% Mn steel had a fully austenitic microstructure which remained stable over the loading range studied, while stress induced austenite to α´- and ε-martensite transformations occur in the 20 wt.% Mn steel which initially contained an α´-martensite in addition to the austenite. The evolution of lattice strains under tensile loading differs between the two steels, reflected their different plastic deformation mechanisms. A stronger grain-orientation dependent behaviour is observed during deformation for the 20 wt.% Mn in contrast to the 30wt.% Mn steel.

Place, publisher, year, edition, pages
Stafa-Zurich, Switzerland: Trans Tech Publications Inc., 2011. Vol. 681, 474-479 p.
Keyword [en]
Mn:Steels, TWIP, TRIP, In-situ neutron diffraction, Micromechanical behaviour, Phase transformation
National Category
Engineering and Technology Other Materials Engineering
URN: urn:nbn:se:liu:diva-66454DOI: 10.4028/ 000303432600079OAI: diva2:404163
8th European Conference on Residual Stresses (ECRS8), Trento, Italy, June 26-28, 2010
Available from: 2011-03-16 Created: 2011-03-16 Last updated: 2014-05-23Bibliographically approved

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