Investigation on microstructure and properties of 7B04 aluminum alloy under two-step aging treatments

被引：0
|
作者：
Li Zhihui [1 ]
Xiong Baiqing [1 ]
Zhang Yongan [1 ]
Zhu Baohong [1 ]
Wang Feng [1 ]
Liu Hongwei [1 ]
机构：
[1] Gen Res Inst Nonferrous Met, State Key Lab Fabricat & Proc Nonferrous Met, Beijing 100088, Peoples R China
来源：
RARE METAL MATERIALS AND ENGINEERING | 2008年 / 37卷 / 03期
关键词：
aluminum alloy 7B04; pre-stretched thick plate; two-step aging; electrical conductivity; microstructure;
D O I：
暂无
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The microstructure and properties of two-step aged 7BO4 aluminum alloy pre-stretched thick plate were investigated, using TEM, tensile and electrical conductivity test. The results show that precipitates in grain interior and boundary of the studied alloy have grown up and coarsened after two-step aging treatment. With the increase of second aging temperature, the tensile strength decreased and electrical conductivity increased. 7BO4 aluminum alloy after two-step aging with the second-step aging at 160 degrees C for 12-24 h can obtain the ultimate tensile strength of 512-532 MPa (sacrificed about 10%similar to 13% with respect to T651 temper), electrical conductivity of 21.3 similar to 22.3 MS/m and elongation of 10%similar to 11%.
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页码：521 / 524
页数：4
相关论文
共 15 条
  • [1] Clinch M.R., 2004, MATER FORUM, V28, P145
  • [2] A TEM STUDY OF MICROSTRUCTURAL CHANGES DURING RETROGRESSION AND REAGING IN 7075 ALUMINUM
    DANH, NC
    RAJAN, K
    WALLACE, W
    [J]. METALLURGICAL TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 1983, 14 (09): : 1843 - 1850
  • [3] Improvements in strength and stress corrosion cracking properties in aluminum alloy 7075 via low-temperature retrogression and re-aging heat treatments
    Ferrer, CP
    Koul, MG
    Connolly, BJ
    Moran, AL
    [J]. CORROSION, 2003, 59 (06) : 520 - 528
  • [4] 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
  • [5] Grain refinement in as-cast 7475 aluminum alloy under hot deformation
    Kaibyshev, R
    Sitdikov, O
    Goloborodko, A
    Sakai, T
    [J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2003, 344 (1-2): : 348 - 356
  • [6] Li Zhi-hui, 2005, Chinese Journal of Nonferrous Metals, V15, P1670
  • [7] Mukhopadhyay AK, 2004, P 9 INT C AL ALL, P883
  • [8] Influence Of critical surface defects and localized competition between anodic dissolution and hydrogen effects during stress corrosion cracking of a 7050 aluminium alloy
    Najjar, D
    Magnin, T
    Warner, TJ
    [J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 1997, 238 (02): : 293 - 302
  • [9] MICROSTRUCTURES OF THE COMMERCIAL-7075 AL-ALLOY IN THE T651-TEMPER AND T7-TEMPER
    PARK, JK
    ARDELL, AJ
    [J]. METALLURGICAL TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 1983, 14 (10): : 1957 - 1965
  • [10] Correlation of strength with hardness and electrical conductivity for aluminium alloy 7010
    Salazar-Guapuriche, M. A.
    Zhao, Y. Y.
    Pitman, A.
    Greene, A.
    [J]. ALUMINIUM ALLOYS 2006, PTS 1 AND 2: RESEARCH THROUGH INNOVATION AND TECHNOLOGY, 2006, 519-521 : 853 - 858
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