Characterisation of PLC band parameters using laser speckle technique

被引：86

作者：

Shabadi, R

Kumar, S ^{[1
]}

Roven, HJ

Dwarakadasa, ES

机构：

[1] Indian Inst Sci, UGC Ctr Adv Studies, Dept Met, Bangalore 560012, Karnataka, India

[2] Norwegian Univ Sci & Technol, Dept Mat Technol & Electrochem, N-7491 Trondheim, Norway

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2004年 / 364卷 / 1-2期

关键词：

deformation bands; Portevin-Le Chatelier effect; serrated flow; aluminium alloys; precipitates;

D O I：

10.1016/j.msea.2003.08.013

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

A newly developed laser speckle technique was used in situ during tensile testing to directly observe PLC bands. Some of the observations are quite different from those hitherto reported. Effect of strain, strain rate, specimen thickness and ageing on band width, band velocity and band temperature and time on band parameters is reported for the first time. It is found that different types of precipitates obtained at different ageing temperatures affect PLC band behaviour in somewhat different manner. (C) 2003 Elsevier B.V. All rights reserved.

引用

页码：140 / 150

页数：11

共 13 条

[1]

Chatelier Le F., 1923, CR HEBD ACAD SCI, V176, P507

[2] The kinetics of the Portevin-Le Chatelier bands in an Al-5at%Mg alloy [J].

CHIHAB, K ;

ESTRIN, Y ;

KUBIN, LP ;

VERGNOL, J .

SCRIPTA METALLURGICA, 1987, 21 (02) :203-208

[3] Spatiotemporal analysis of Portevin-Le Chatelier deformation bands:: Theory, simulation, and experiment -: art. no. 134109 [J].

Hähner, P ;

Ziegenbein, A ;

Rizzi, E ;

Neuhäuser, H .

PHYSICAL REVIEW B, 2002, 65 (13)

[4] ON DISCONTINUOUS PLASTIC STATES, WITH SPECIAL REFERENCE TO LOCALIZED NECKING IN THIN SHEETS [J].

HILL, R .

JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS, 1952, 1 (01) :19-30

[5] PROPAGATIVE INSTABILITIES - AN EXPERIMENTAL VIEW [J].

MCCORMICK, PG ;

VENKADESAN, S ;

LING, CP .

SCRIPTA METALLURGICA ET MATERIALIA, 1993, 29 (09) :1159-1164

[6] THE INFLUENCE OF SPECIMEN GEOMETRY ON THE PORTEVIN-LECHATELIER EFFECT IN AN AL-MG ALLOY [J].

ROBINSON, JM ;

SHAW, MP .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 1992, 159 (02) :159-165

[7] Assessing formability of sheet metals through advanced tensile and LASER speckle analysis [J].

Shabadi, R ;

Roven, HJ ;

Kumar, S ;

Dwarakadasa, ES .

ALUMINUM ALLOYS 2002: THEIR PHYSICAL AND MECHANICAL PROPERTIES PTS 1-3, 2002, 396-4 :1623-1628

[8]

SHABADI R, 2002, METALL ITAL, V10, P21

[9]

SORENG A, 1997, P NAT C ADV LIGHT AL, P6

[10]

Van Den Brink S. H., 1977, Physica Status Solidi A, V41, P513, DOI 10.1002/pssa.2210410222

← 1 2 →