Migration of the Σ7 tilt grain boundary in Al under an applied external stress

被引：57

作者：

Molodov, Dmitri A. ^{[1
]}

Gorkaya, Tatiana ^{[1
]}

Gottstein, Guenter ^{[1
]}

机构：

[1] Rhein Westfal TH Aachen, Inst Phys Met & Met Phys, D-52056 Aachen, Germany

来源：

SCRIPTA MATERIALIA | 2011年 / 65卷 / 11期

关键词：

Grain boundary migration; Bicrystal; In situ measurements; Shear stress; SEM; SHEAR DEFORMATION; MOTION; INCLINATION; BICRYSTALS;

D O I：

10.1016/j.scriptamat.2011.08.030

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Stress-driven migration of symmetrical tilt grain boundaries with misorientations close to 38.2 degrees < 1 1 1 >, 73.4 degrees < 2 0 1 > and 135.6 degrees < 1 1 2 > rotations related to the same special Sigma 7{1 3 2} CSL boundary was measured by in situ observations in a scanning electron microscope. Contrary to expectations and theoretical predictions, the investigated boundaries moved under an applied stress, but their motion did not produce shear. The three crystallographically equivalent Sigma 7 boundaries were found to behave differently with respect to the migration rate and its temperature dependence. (C) 2011 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：990 / 993

页数：4

共 20 条

[1] Coupling grain boundary motion to shear deformation [J].

Cahn, John W. ;

Mishin, Yuri ;

Suzuki, Akira .

ACTA MATERIALIA, 2006, 54 (19) :4953-4975

[2] Grain-boundary shear-migration coupling. II. Geometrical model for general boundaries [J].

Caillard, D. ;

Mompiou, F. ;

Legros, M. .

ACTA MATERIALIA, 2009, 57 (08) :2390-2402

[3] SLIDING BEHAVIOR OF COINCIDENCE GRAIN-BOUNDARIES DEVIATING FROM IDEAL SYMMETRICAL TILT RELATIONSHIP [J].

FUKUTOMI, H ;

ISEKI, T ;

ENDO, T ;

KAMIJO, T .

ACTA METALLURGICA ET MATERIALIA, 1991, 39 (07) :1445-1448

[4] Concurrent grain boundary motion and grain rotation under an applied stress [J].

Gorkaya, Tatiana ;

Molodov, Konstantin D. ;

Molodov, Dmitri A. ;

Gottstein, Guenter .

ACTA MATERIALIA, 2011, 59 (14) :5674-5680

[5] Experimental method for true in situ measurements of shear-coupled grain boundary migration [J].

Gorkaya, Tatiana ;

Burlet, Thomas ;

Molodov, Dmitri A. ;

Gottstein, Guenter .

SCRIPTA MATERIALIA, 2010, 63 (06) :633-636

[6] Stress-driven migration of symmetrical ⟨1 0 0⟩ tilt grain boundaries in Al bicrystals [J].

Gorkaya, Tatiana ;

Molodov, Dmitri A. ;

Gottstein, Guenter .

ACTA MATERIALIA, 2009, 57 (18) :5396-5405

[7]

Horiuchi R., 1987, Fundamentals of Diffusion Bonding, P347

[8] Dynamics of grain boundary motion coupled to shear deformation: An analytical model and its verification by molecular dynamics [J].

Ivanov, V. A. ;

Mishin, Y. .

PHYSICAL REVIEW B, 2008, 78 (06)

[9] Inclination dependence of grain boundary energy and its impact on the faceting and kinetics of tilt grain boundaries in aluminum [J].

Kirch, D. M. ;

Jannot, E. ;

Barrales-Mora, L. A. ;

Molodov, D. A. ;

Gottstein, G. .

ACTA MATERIALIA, 2008, 56 (18) :4998-5011

[10]

KIRCH DM, 2008, IN SITU SEM INVESTIG

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