Experimental investigations on the temporal and spatial behaviors of the PLC effect in Al-Cu alloys

被引：0
|
作者：
Jiang, HF [1 ]
Zhang, QC [1 ]
Jiang, ZY [1 ]
Wu, XP [1 ]
机构：
[1] Univ Sci & Technol China, CAS Key Lab Mech Behav & Design Mat, Hefei 230027, Peoples R China
来源：
ACTA METALLURGICA SINICA | 2005年 / 41卷 / 07期
关键词：
Al-Cu alloy; PLC effect; dynamic strain aging; plastic instability;
D O I：
暂无
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
The temporal and spatial behaviors of the PLC (Portevin-Le Chatlier) effect in Al-Cu alloy are systemically investigated and analyzed. Under different applied strain rates, three types of serrated stress-time curves are obtained respectively. And the similarities and differences of them are compared and interpreted qualitatively. Correspondingly, the spatial propagating characteristics of the three types of PLC deformation bands are observed and analyzed. The evolutions of the propagating velocity for type A and B bands are discussed with respect to different tensile strains in the 3mm thick specimens. At the same tensile strain, the power law relationship between band propagating velocity and applied strain rate is also obtained. Contrasting the serrated stress-time curves with the position-time plots, the relationship between the macroscopic spatiotemporal behaviors is compared for the PLC effect. The influence of specimen thickness to the spatial correlation of PLC deformation bands is also discussed.
引用
收藏
页码：727 / 732
页数：6
相关论文
共 18 条
  • [1] BELL JF, 1973, ENCY PHYS MECH SOL A, V6, P649
  • [2] Chatelier Le F., 1923, CR HEBD ACAD SCI, V176, P507
  • [3] The kinetics of the Portevin-Le Chatelier bands in an Al-5at%Mg alloy
    CHIHAB, K
    ESTRIN, Y
    KUBIN, LP
    VERGNOL, J
    [J]. SCRIPTA METALLURGICA, 1987, 21 (02): : 203 - 208
  • [4] Cottrell A.H, 1953, Dislocations and Plastic Flow in Crystals, DOI DOI 10.1119/1.1933704
  • [5] Spatiotemporal analysis of Portevin-Le Chatelier deformation bands:: Theory, simulation, and experiment -: art. no. 134109
    Hähner, P
    Ziegenbein, A
    Rizzi, E
    Neuhäuser, H
    [J]. PHYSICAL REVIEW B, 2002, 65 (13)
  • [6] JIANG HF, IN PRESS J EXP MECH
  • [7] Analysis of Portevin-Le Chatelier serrations of type Bin Al-Mg
    Klose, FB
    Ziegenbein, A
    Hagemann, F
    Neuhäuser, H
    Hähner, P
    Abbadi, M
    Zeghloul, A
    [J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2004, 369 (1-2): : 76 - 81
  • [8] EVOLUTION OF DISLOCATION DENSITIES AND THE CRITICAL CONDITIONS FOR THE PORTEVIN-LECHATELIER EFFECT
    KUBIN, LP
    ESTRIN, Y
    [J]. ACTA METALLURGICA ET MATERIALIA, 1990, 38 (05): : 697 - 708
  • [9] Spatio-temporal dynamics of the Portevin-Le Chatelier effect:: Experiment and modelling
    Lebyodkin, M
    Dunin-Barkowskii, L
    Bréchet, Y
    Estrin, Y
    Kubin, LP
    [J]. ACTA MATERIALIA, 2000, 48 (10) : 2529 - 2541
  • [10] MODEL FOR PORTEVIN-LE CHATELIER EFFECT IN SUBSTITUTIONAL ALLOYS
    MCCORMICK, PG
    [J]. ACTA METALLURGICA, 1972, 20 (03): : 351 - +
12