On the first direct observation of de-twinning in a twinning-induced plasticity steel

被引：33

作者：

McCormack, Scott J. ^{[1
]}

Wen, Wei ^{[2
]}

Pereloma, Elena V. ^{[1
,3
]}

Tome, Carlos N. ^{[2
]}

Gazder, Azdiar A. ^{[3
]}

Saleh, Ahmed A. ^{[1
]}

机构：

[1] Univ Wollongong, Sch Mech Mat & Mechatron Engn, Wollongong, NSW 2522, Australia

[2] Los Alamos Natl Lab, Mat Sci & Technol Div, Los Alamos, NM 87545 USA

[3] Univ Wollongong, Elect Microscopy Ctr, Wollongong, NSW 2500, Australia

来源：

ACTA MATERIALIA | 2018年 / 156卷

基金：

澳大利亚研究理事会;

关键词：

TWIP steel; De-twinning; Reverse loading; Electron back-scattering diffraction (EBSD); VPSC; STRAIN-PATH CHANGES; MECHANICAL-BEHAVIOR; MAGNESIUM ALLOY; TWIP STEEL; CYCLIC DEFORMATION; STRESS-RELAXATION; TEXTURE EVOLUTION; LATTICE STRAINS; PURE TI; DISLOCATION;

D O I：

10.1016/j.actamat.2018.06.029

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Electron back-scattering diffraction was used to track the microstructure evolution of a fully annealed Fe-24Mn-3Al-2Si-1Ni-0.06C TWinning Induced Plasticity (TWIP) steel during interrupted reverse (tension compression) loading. Direct observation of the same selected area revealed that all deformation twins formed during forward tension loading (0.128 true strain) were removed upon subsequent reverse compression loading (0.031 true strain). Consequently, the present study provides the first unambiguous experimental evidence of de-twinning during the reverse loading of a polycrystalline TWIP steel. The reverse loading behaviour was simulated by a dislocation-based hardening model embedded in the Visco-Plastic Self-Consistent (VPSC) polycrystal framework taking into account the accumulation and annihilation of dislocations and back-stress effects. The model has been extended to account for the processes of twinning and de-twinning, as well as the twin barrier effect under load reversal. A new formulation based on the changes in the dislocation mean free path is proposed to track twin lamellae generation/annihilation throughout deformation along with its associated effect on hardening. (C) 2018 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：172 / 182

页数：11

共 52 条

[1] On the deformation twinning of Mg AZ31B: A three-dimensional synchrotron X-ray diffraction experiment and crystal plasticity finite element model [J].

Abdolvand, Hamidreza ;

Majkut, Marta ;

Oddershede, Jette ;

Schmidt, Soren ;

Lienert, Ulrich ;

Diak, Bradley J. ;

Withers, Philip J. ;

Daymond, Mark R. .

INTERNATIONAL JOURNAL OF PLASTICITY, 2015, 70 :77-97

[2] Modeling of mechanical twinning in a high manganese content austenitic steel [J].

Allain, S ;

Chateau, JP ;

Dahmoun, D ;

Bouaziz, O .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2004, 387 :272-276

[3] Evolution of stress in individual grains and twins in a magnesium alloy aggregate [J].

Aydiner, C. C. ;

Bernier, J. V. ;

Clausen, B. ;

Lienert, U. ;

Tome, C. N. ;

Brown, D. W. .

PHYSICAL REVIEW B, 2009, 80 (02)

[4] Spatially resolved in situ strain measurements from an interior twinned grain in bulk polycrystalline AZ31 alloy [J].

Balogh, L. ;

Niezgoda, S. R. ;

Kanjarla, A. K. ;

Brown, D. W. ;

Clausen, B. ;

Liu, W. ;

Tome, C. N. .

ACTA MATERIALIA, 2013, 61 (10) :3612-3620

[5] On the strength of dislocation interactions and their effect on latent hardening in pure Magnesium [J].

Bertin, N. ;

Tome, C. N. ;

Beyerlein, I. J. ;

Barnett, M. R. ;

Capolungo, L. .

INTERNATIONAL JOURNAL OF PLASTICITY, 2014, 62 :72-92

[6] A dislocation-based constitutive law for pure Zr including temperature effects [J].

Beyerlein, I. J. ;

Tome, C. N. .

INTERNATIONAL JOURNAL OF PLASTICITY, 2008, 24 (05) :867-895

[7] In Situ Characterization of Twin Nucleation in Pure Ti Using 3D-XRD [J].

Bieler, Thomas R. ;

Wang, Leyun ;

Beaudoin, Armand J. ;

Kenesei, Peter ;

Lienert, Ulrich .

METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 2014, 45A (01) :109-122

[8] Effect of grain and twin boundaries on the hardening mechanisms of twinning-induced plasticity steels [J].

Bouaziz, O. ;

Allain, S. ;

Scott, C. .

SCRIPTA MATERIALIA, 2008, 58 (06) :484-487

[9] On the stress dependence of partial dislocation separation and deformation microstructure in austenitic stainless steels [J].

Byun, TS .

ACTA MATERIALIA, 2003, 51 (11) :3063-3071

[10] CYCLIC STRESS-STRAIN RESPONSE OF TITANIUM-VANADIUM ALLOYS [J].

CHAKRABORTTY, SB ;

MUKHOPADHYAY, TK ;

STARKE, EA .

ACTA METALLURGICA, 1978, 26 (06) :909-920

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