An investigation into the hot deformation characteristics of 7075 aluminum alloy

被引:164
作者
Rokni, M. R. [1 ]
Zarei-Hanzaki, A. [1 ]
Roostaei, Ali A. [1 ]
Abedi, H. R. [1 ]
机构
[1] Univ Tehran, Sch Met & Mat Engn, Tehran, Iran
关键词
AL-MG-SI; DYNAMIC RECRYSTALLIZATION; BEHAVIOR; COMPRESSION; EVOLUTION;
D O I
10.1016/j.matdes.2010.12.047
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The deformation behavior and microstructural evolution of a 7075-T6 aluminum alloy have been investigated through applying hot compression tests at different temperatures and strain rates (450, 500, 520, 550, 580 degrees C and 0.004, 0.04 and 0.4 s(-1)). The peak stress levels in different conditions were extracted from the related true stress-true strain curves. Different dynamic recrystallization (DRX) mechanisms including continuous, discontinuous and geometrical ones were proposed to justify the corresponding results of various thermomechanical processing conditions. Furthermore, the results indicated that the recrystallized structure had been spheroidized in the semi-solid temperature range due to the liquid pressure and their sizes were reduced with increasing the strain rate. (C) 2010 Elsevier Ltd. All rights reserved.
引用
收藏
页码:2339 / 2344
页数:6
相关论文
共 25 条
  • [1] The semi-solid tensile deformation behavior of wrought AZ31 magnesium alloy
    Abedi, H. R.
    Zarei-Hanzaki, A.
    Fatemi-Varzaneh, S. M.
    Roostaei, Ali A.
    [J]. MATERIALS & DESIGN, 2010, 31 (09): : 4386 - 4391
  • [2] Recrystallisation in the semi-solid state in 7075 aluminium alloy
    Atkinson, H. V.
    Burke, K.
    Vaneetveld, G.
    [J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2008, 490 (1-2): : 266 - 276
  • [3] Modelling the semisolid processing of metallic alloys
    Atkinson, HV
    [J]. PROGRESS IN MATERIALS SCIENCE, 2005, 50 (03) : 341 - 412
  • [4] Strengthening in the new aluminum alloy AA 6069
    Bergsma, SC
    Kassner, ME
    Li, X
    Wall, MA
    [J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 1998, 254 (1-2): : 112 - 118
  • [5] Geometric dynamic recrystallization in hot torsion of Al-SMg-0.6Mn (AA5083)
    Blum, W
    Zhu, Q
    Merkel, R
    McQueen, HJ
    [J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 1996, 205 (1-2): : 23 - 30
  • [6] Thixoforming 7075 aluminium alloys
    Chayong, S
    Atkinson, HV
    Kapranos, P
    [J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2005, 390 (1-2): : 3 - 12
  • [7] An investigation of compressive deformation behaviour for AZ91 Mg alloy containing a small volume of liquid
    Chino, Y
    Kobata, M
    Iwasaki, H
    Mabuchi, M
    [J]. ACTA MATERIALIA, 2003, 51 (11) : 3309 - 3318
  • [8] BEHAVIOR OF METAL-ALLOYS IN THE SEMISOLID STATE
    FLEMINGS, MC
    [J]. METALLURGICAL TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 1991, 22 (05): : 957 - 981
  • [9] A model of continuous dynamic recrystallization
    Gourdet, S
    Montheillet, F
    [J]. ACTA MATERIALIA, 2003, 51 (09) : 2685 - 2699
  • [10] Recent development in aluminium alloys for aerospace applications
    Heinz, A
    Haszler, A
    Keidel, C
    Moldenhauer, S
    Benedictus, R
    Miller, WS
    [J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2000, 280 (01): : 102 - 107