Grain boundary mediated plasticity: The role of grain boundary atomic structure and thermal activation

被引：21

作者：

Terentyev, D. ^{[1
]}

Bakaev, A. ^{[1
]}

Serra, A. ^{[2
]}

Pavia, F. ^{[3
]}

Baker, K. L. ^{[4
]}

Anento, N. ^{[2
]}

机构：

[1] SCK CEN, Nucl Mat Sci Inst, Boeretang 200, B-2400 Mol, Belgium

[2] Univ Politecn Cataluna, BarcelonaTech, Dept Civil & Environm Engn, ETS Engn Camins, Jordi Girona 1-3, ES-08034 Barcelona, Spain

[3] ANSYS Switzerland GmbH, Technopk Str 1, CH-8005 Zurich, Switzerland

[4] Ecole Polytech Fed Lausanne, Lausanne, Switzerland

来源：

SCRIPTA MATERIALIA | 2018年 / 145卷

基金：

欧洲研究理事会;

关键词：

Dislocations; Grain boundary; Plasticity; DISLOCATION; COPPER; STRENGTH; STRAIN;

D O I：

10.1016/j.scriptamat.2017.10.002

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The interaction of dislocation pile-ups with several tilt grain boundaries (GB) is studied in copper by using a hybrid continuum-atomistic approach. The effects of temperature, pile-up intensity and GB structure on absorption and transmission of slip as a function of local stress state are explored. By considering several high-angle GBs with different misorientation angles, we demonstrate that GB atomic structure primarily defines its ability to accommodate incoming pile-up dislocations, thus limiting the direct transmission of pile-ups through the interface. (C) 2017 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：1 / 4

页数：4

共 20 条

[1] Influence of irradiation damage on slip transfer across grain boundaries [J].

Cui, B. ;

Kacher, J. ;

McMurtrey, M. ;

Was, G. ;

Robertson, I. M. .

ACTA MATERIALIA, 2014, 65 :150-160

[2] Strength, strain-rate sensitivity and ductility of copper with nanoscale twins [J].

Dao, M. ;

Lu, L. ;

Shen, Y. F. ;

Suresh, S. .

ACTA MATERIALIA, 2006, 54 (20) :5421-5432

[3] Multiscale modelling of plastic flow localization in irradiated materials [J].

de la Rubia, TD ;

Zbib, HM ;

Khraishi, TA ;

Wirth, BD ;

Victoria, M ;

Caturla, MJ .

NATURE, 2000, 406 (6798) :871-874

[4] Multiscale modeling of dislocation/grain-boundary interactions: III. 60° dislocations impinging on Σ3, Σ9 and Σ11 tilt boundaries in Al [J].

Dewald, M. ;

Curtin, W. A. .

MODELLING AND SIMULATION IN MATERIALS SCIENCE AND ENGINEERING, 2011, 19 (05)

[5] Multiscale modelling of dislocation/grain boundary interactions. II. Screw dislocations impinging on tilt boundaries in Al [J].

Dewald, M. P. ;

Curtin, W. A. .

PHILOSOPHICAL MAGAZINE, 2007, 87 (30) :4615-4641

[6] Multiscale modelling of dislocation/grain-boundary interactions:: I.: Edge dislocations impinging on Σ11 (113) tilt boundary in Al [J].

Dewald, M. P. ;

Curtin, W. A. .

MODELLING AND SIMULATION IN MATERIALS SCIENCE AND ENGINEERING, 2007, 15 (01) :S193-S215

[7]

Ghoniem NM, 2001, PHILOS MAG A, V81, P2743, DOI 10.1080/01418610110049725

[8] Ultrahigh strength and high electrical conductivity in copper [J].

Lu, L ;

Shen, YF ;

Chen, XH ;

Qian, LH ;

Lu, K .

SCIENCE, 2004, 304 (5669) :422-426

[9] Structural stability and lattice defects in copper:: Ab initio, tight-binding, and embedded-atom calculations -: art. no. 224106 [J].

Mishin, Y ;

Mehl, MJ ;

Papaconstantopoulos, DA ;

Voter, AF ;

Kress, JD .

PHYSICAL REVIEW B, 2001, 63 (22) :2241061-22410616

[10] Atomic-scale plasticity in the presence of Frank loops [J].

Nogaret, T. ;

Robertson, C. ;

Rodney, D. .

PHILOSOPHICAL MAGAZINE, 2007, 87 (06) :945-966

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