Intrinsic structure of acoustic emission events during jerky flow in an Al alloy

被引：34

作者：

Lebyodkin, M. A. ^{[1
]}

Lebedkina, T. A. ^{[2
]}

Chmelik, F. ^{[3
]}

Lamark, T. T. ^{[4
]}

Estrin, Y. ^{[5
,6
,7
]}

Fressengeas, C. ^{[1
]}

Weiss, J. ^{[8
]}

机构：

[1] Univ Paul Verlaine Metz, CNRS, Lab Phys & Mecan Mat, F-57405 Metz, France

[2] Russian Acad Sci, Inst Solid State Phys, Chernogolovka 142432, Russia

[3] Charles Univ Prague, Dept Phys Mat, CZ-12116 Prague 2, Czech Republic

[4] Bergen Engn AS, N-5862 Bergen, Norway

[5] ARC Ctr Excellence Design Light Met, Clayton, Vic 3217, Australia

[6] Monash Univ, Dept Mat Engn, Clayton, Vic 3800, Australia

[7] CSIRO, Div Mat Sci & Engn, Clayton, Vic 3169, Australia

[8] CNRS, Lab Glaciol & Geophys Environm, F-38402 St Martin Dheres, France

来源：

PHYSICAL REVIEW B | 2009年 / 79卷 / 17期

关键词：

acoustic emission; aluminium alloys; plastic flow; self-assembly; PLASTIC-FLOW; SINGLE-CRYSTALS; DEFORMATION; METALS; STATISTICS;

D O I：

10.1103/PhysRevB.79.174114

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Scaling behavior is found in acoustic-emission events associated with stress drops observed in velocity-driven plastic deformation of an Al alloy, which exhibits jerky plastic flow. The occurrence of scaling proves that these acoustic-emission events, which are commonly regarded as "elementary" ones, have a small-scale self-organized structure comprising a group of peaks correlated in time. This structure reveals details of the temporal variation in elementary plastic events at a microsecond scale, which are hardly accessible by other measurement techniques.

引用

页数：6

共 30 条

[1] Crossover from chaotic to self-organized critical dynamics in jerky flow of single crystals [J].

Ananthakrishna, G ;

Noronha, SJ ;

Fressengeas, C ;

Kubin, LP .

PHYSICAL REVIEW E, 1999, 60 (05) :5455-5462

[2] Multifractal burst in the spatiotemporal dynamics of jerky flow [J].

Bharathi, MS ;

Lebyodkin, M ;

Ananthakrishna, G ;

Fressengeas, C ;

Kubin, LP .

PHYSICAL REVIEW LETTERS, 2001, 87 (16) :1-165508

[3] LOW-TEMPERATURE ABRUPT DEFORMATION PROCESSES IN METALS - KINETIC AND STATISTICAL PROPERTIES OBSERVED BY MEANS OF ELECTRONIC RESPONSE [J].

BOBROV, VS ;

KRAVCHENKO, YY ;

LEBYODKIN, MA .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 1993, 164 (1-2) :252-254

[4] Geometrically non-linear modeling of the Portevin-Le Chatelier effect [J].

Boehlke, T. ;

Bondar, G. ;

Estrin, Y. ;

Lebyodkin, M. A. .

COMPUTATIONAL MATERIALS SCIENCE, 2009, 44 (04) :1076-1088

[5] DIRECT DETERMINATION OF THE F(ALPHA) SINGULARITY SPECTRUM [J].

CHHABRA, A ;

JENSEN, RV .

PHYSICAL REVIEW LETTERS, 1989, 62 (12) :1327-1330

[6] Investigating the Portevin-Le Chatelier effect by the acoustic emission and laser extensometry techniques [J].

Chmelík, F ;

Ziegenbein, A ;

Neuhäuser, H ;

Lukác, P .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2002, 324 (1-2) :200-207

[7] Scale-free intermittent flow in crystal plasticity [J].

Dimiduk, Dennis M. ;

Woodward, Chris ;

LeSar, Richard ;

Uchic, Michael D. .

SCIENCE, 2006, 312 (5777) :1188-1190

[8]

Estrin Y., 1989, J. Mech. Behav. Mater, V2, P255, DOI DOI 10.1515/JMBM.1989.2.3-4.255

[9]

Feder Jens, 1988, FRACTALS

[10] FRACTAL MEASURES AND THEIR SINGULARITIES - THE CHARACTERIZATION OF STRANGE SETS [J].

HALSEY, TC ;

JENSEN, MH ;

KADANOFF, LP ;

PROCACCIA, I ;

SHRAIMAN, BI .

PHYSICAL REVIEW A, 1986, 33 (02) :1141-1151

← 1 2 3 →