In-situ neutron diffraction investigation on twinning/detwinning activities during tension-compression load reversal in a twinning induced plasticity steel

Q. Xie; Y. Chen; P. Yang; Z. Zhao; Y. D. Wang; K. An

doi:10.1016/j.scriptamat.2018.03.017

In-situ neutron diffraction investigation on twinning/detwinning activities during tension-compression load reversal in a twinning induced plasticity steel

Q. Xie, Y. Chen, P. Yang, Z. Zhao, Y. D. Wang, K. An

Materials Engineering

Research output: Contribution to journal › Article › peer-review

32 Scopus citations

Abstract

The tension-compression type of load reversal produces an asymmetric cyclic tension-compression behavior and varied yielding stresses in the subsequent monotonic tension and compression in a twinning induced plasticity steel. The micromechanical behavior was elucidated via the evolutions of the stacking fault probability and the grain orientation density captured by in-situ neutron diffraction. The latter indicates more profound detwinning activities in a reversal from tension to compression than those from compression to tension and more twinning involves in monotonic tension than in compression. This is confirmed by the calculated twinning activities in monotonic tension and compression using the visco-plastic self-consistent model.

Original language	English
Pages (from-to)	168-172
Number of pages	5
Journal	Scripta Materialia
Volume	150
DOIs	https://doi.org/10.1016/j.scriptamat.2018.03.017
State	Published - Jun 2018

Funding

QX thanks the funding from the Natural Science Foundation of China (grant no. 51571025 ) during his former post-doc period at the University of Science and Technology Beijing. QX thanks the support of Laboratory Directed Research and Development (LDRD) Program of Oak Ridge National Laboratory. This research used resources at the Spallation Neutron Source, a U.S. DOE Office of Science User Facility operated by ORNL.

Keywords

Detwinning
Grain orientation dependence
Stacking fault probability
TWIP
Tension-compression asymmetry

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title = "In-situ neutron diffraction investigation on twinning/detwinning activities during tension-compression load reversal in a twinning induced plasticity steel",

abstract = "The tension-compression type of load reversal produces an asymmetric cyclic tension-compression behavior and varied yielding stresses in the subsequent monotonic tension and compression in a twinning induced plasticity steel. The micromechanical behavior was elucidated via the evolutions of the stacking fault probability and the grain orientation density captured by in-situ neutron diffraction. The latter indicates more profound detwinning activities in a reversal from tension to compression than those from compression to tension and more twinning involves in monotonic tension than in compression. This is confirmed by the calculated twinning activities in monotonic tension and compression using the visco-plastic self-consistent model.",

keywords = "Detwinning, Grain orientation dependence, Stacking fault probability, TWIP, Tension-compression asymmetry",

author = "Q. Xie and Y. Chen and P. Yang and Z. Zhao and Wang, {Y. D.} and K. An",

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T1 - In-situ neutron diffraction investigation on twinning/detwinning activities during tension-compression load reversal in a twinning induced plasticity steel

AU - Xie, Q.

AU - Chen, Y.

AU - Yang, P.

AU - Zhao, Z.

AU - Wang, Y. D.

AU - An, K.

PY - 2018/6

Y1 - 2018/6

N2 - The tension-compression type of load reversal produces an asymmetric cyclic tension-compression behavior and varied yielding stresses in the subsequent monotonic tension and compression in a twinning induced plasticity steel. The micromechanical behavior was elucidated via the evolutions of the stacking fault probability and the grain orientation density captured by in-situ neutron diffraction. The latter indicates more profound detwinning activities in a reversal from tension to compression than those from compression to tension and more twinning involves in monotonic tension than in compression. This is confirmed by the calculated twinning activities in monotonic tension and compression using the visco-plastic self-consistent model.

AB - The tension-compression type of load reversal produces an asymmetric cyclic tension-compression behavior and varied yielding stresses in the subsequent monotonic tension and compression in a twinning induced plasticity steel. The micromechanical behavior was elucidated via the evolutions of the stacking fault probability and the grain orientation density captured by in-situ neutron diffraction. The latter indicates more profound detwinning activities in a reversal from tension to compression than those from compression to tension and more twinning involves in monotonic tension than in compression. This is confirmed by the calculated twinning activities in monotonic tension and compression using the visco-plastic self-consistent model.

KW - Detwinning

KW - Grain orientation dependence

KW - Stacking fault probability

KW - TWIP

KW - Tension-compression asymmetry

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In-situ neutron diffraction investigation on twinning/detwinning activities during tension-compression load reversal in a twinning induced plasticity steel

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