Paper Title:
In-Situ Neutron Diffraction Study of the Deformation Behaviour of Two High-Manganese Austenitic Steels
  Abstract

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.

  Info
Periodical
Edited by
Paolo Scardi and Cristy L. Azanza Ricardo
Pages
474-479
DOI
10.4028/www.scientific.net/MSF.681.474
Citation
R. L. Peng, X. P. Liu, Y. D. Wang, S. Y. Zhang, Y. F. Shen, S. Johansson, "In-Situ Neutron Diffraction Study of the Deformation Behaviour of Two High-Manganese Austenitic Steels", Materials Science Forum, Vol. 681, pp. 474-479, 2011
Online since
March 2011
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