On the feasibility of partial slip reversal and de-twinning during the cyclic loading of TWIP steel

Saleh, Ahmed A.; Clausen, Bjorn; Brown, Donald William; Perelome, Elena V.; Davies, Christopher H.J.; Tome, Carlos; Gazder, Azdiar A.

doi:10.1016/j.matlet.2016.07.005

Title: On the feasibility of partial slip reversal and de-twinning during the cyclic loading of TWIP steel

Journal Article · Mon Jul 04 00:00:00 EDT 2016 · Materials Letters

DOI:https://doi.org/10.1016/j.matlet.2016.07.005· OSTI ID:1498036

Saleh, Ahmed A. ^[1];

^[2];

^[2]; Perelome, Elena V. ^[1]; Davies, Christopher H.J. ^[3]; Tome, Carlos ^[4]; Gazder, Azdiar A. ^[1]

University of Wollongong, NSW (Australia)
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Monash Univ., Melbourne, VIC (Australia)
Los Alamos National Laboratory

We report that a recently modified Elasto-Plastic Self-Consistent (EPSC) model which empirically accounts for both intergranular and intragranular back stresses has been successfully used to simulate the cyclic (tension-compression) loading behaviour of an Fe-24Mn-3Al-2Si-1Ni-0.06C TWinning Induced Plasticity (TWIP) steel between strain limits of ±1%. Lattice strain measurements acquired via in-situ neutron diffraction were used to further validate the modelling results. An improved prediction of the pronounced Bauschinger effect during unloading is achieved when the reversibility of partial slip in the <112> direction is accounted for. In conclusion, this result indicates a potential contribution of the stress-induced separation of partial dislocations to the observed early yielding at the low strain levels employed in this study. It also raises the possibility that de-twinning events could be operative during load reversal.

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Research Organization:: Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

Sponsoring Organization:: USDOE

Grant/Contract Number:: 89233218CNA000001; AC52-06NA25396; FWP 06SCPE401; W-7405-ENG-36

OSTI ID:: 1498036

Alternate ID(s):: OSTI ID: 1433015

Report Number(s):: LA-UR-15-29463

Journal Information:: Materials Letters, Vol. 182, Issue C; ISSN 0167-577X

Publisher:: ElsevierCopyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 7 works

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References (16)

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Cited By (1)

Experimental and Self-Consistent Modeling Study of De-twinning in a Twinning-Induced Plasticity Steel Saleh, Ahmed A.; Wen, Wei; Pereloma, Elena V. JOM, Vol. 71, Issue 4 https://doi.org/10.1007/s11837-019-03374-2	journal	February 2019

Figures / Tables (3)

Figure 1(p. 9)

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Table 1(p. 10)

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Related Subjects

36 MATERIALS SCIENCE
42 ENGINEERING
TWIP
Neutron diffraction
Simulation and modelling
EPSC
Bauschinger effect