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Title: In-situ neutron diffraction study on the tension-compression fatigue behavior of a twinning induced plasticity steel

Journal Article · · Scripta Materialia
 [1];  [2];  [1];  [2];  [2];  [2];  [2];  [3];  [2];  [1]
  1. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  2. Univ. of Science and Technology Beijing, Beijing (China)
  3. Jiangsu Univ. of Science and Technology, Jiangsu (China)

Grain orientation dependent behavior during tension-compression type of fatigue loading in a TWIP steel was studied using in-situ neutron diffraction. Orientation zones with dominant behavior of (1) twinning-de-twinning, (2) twinning-re-twinning followed by twinning-de-twinning, (3) twinning followed by dislocation slip and (4) dislocation slip were identified. Jumps of the orientation density were evidenced in neutron diffraction peaks which explains the macroscopic asymmetric behavior. The asymmetric behavior in early stage of fatigue loading is mainly due to small volume fraction of twins in comparison with that at later stage. As a result, easy activation of the de-twin makes the macroscopically unloading behavior nonlinear.

Research Organization:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Spallation Neutron Source (SNS)
Sponsoring Organization:
USDOE Laboratory Directed Research and Development (LDRD) Program; USDOE Office of Science (SC)
Grant/Contract Number:
AC05-00OR22725
OSTI ID:
1357973
Alternate ID(s):
OSTI ID: 1459218
Journal Information:
Scripta Materialia, Vol. 137, Issue C; ISSN 1359-6462
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 21 works
Citation information provided by
Web of Science

References (26)

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Cold rolling behaviour of an austenitic Fe–30Mn–3Al–3Si TWIP-steel: the importance of deformation twinning journal April 2004
On the strain hardening and texture evolution in high manganese steels: Experiments and numerical investigation journal December 2013
Microbanding mechanism in an Fe–Mn–C high-Mn twinning-induced plasticity steel journal July 2013
The influence of stacking fault energy on the microstructural and strain-hardening evolution of Fe–Mn–Al–Si steels during tensile deformation journal November 2015
State-of-the-knowledge on TWIP steel journal May 2012
Deformation twinning journal January 1995
Revealing the strain-hardening behavior of twinning-induced plasticity steels: Theory, simulations, experiments journal January 2013
Ab initio -guided design of twinning-induced plasticity steels journal April 2016
Dislocation and twin substructure evolution during strain hardening of an Fe–22wt.% Mn–0.6wt.% C TWIP steel observed by electron channeling contrast imaging journal September 2011
Intragranular twinning, detwinning, and twinning-like lattice reorientation in magnesium alloys journal December 2016
On the evolution and modelling of lattice strains during the cyclic loading of TWIP steel journal August 2013
The effect of grain size on the twin initiation stress in a TWIP steel journal May 2015
Evolution of dislocations and twins in high cycle fatigue of a twinning-induced plasticity steel journal October 2015
Plastic deformation and damage induced by fatigue in TWIP steels journal March 2015
The effect of grain size and grain orientation on deformation twinning in a Fe–22wt.% Mn–0.6wt.% C TWIP steel journal June 2010
Observations on the Nonlinear Unloading Behavior of Advanced High Strength Steels journal December 2014
Orientation dependence of twinning and strain hardening behaviour of a high manganese twinning induced plasticity steel with polycrystalline structure journal December 2011
Appearance of dislocation-mediated and twinning-induced plasticity in an engineering-grade FeMnNiCr alloy journal December 2011
Dependence of deformation twinning on grain orientation in a high manganese steel journal October 2006
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On the stress state dependence of the twinning rate and work hardening in twinning-induced plasticity steels journal June 2012
Direct observation of twinning–detwinning–retwinning on magnesium single crystal subjected to strain-controlled cyclic tension–compression in [0 0 0 1] direction journal September 2011
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Cited By (4)

Bending Behavior of a Wrought Magnesium Alloy Investigated by the In Situ Pinhole Neutron Diffraction Method journal August 2018
Grain Orientation Dependence of the Residual Lattice Strain in a Cold Rolled Interstitial-Free Steel journal January 2018
Applying neutron transmission physics and 3D statistical full-field model to understand 2D Bragg-edge imaging journal February 2018
Event-based processing of neutron scattering data at the Spallation Neutron Source journal May 2018

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