Grain boundary sliding in a superplastic zinc-aluminum alloy processed using severe plastic deformation

被引：53
|
作者：
Kawasaki, Megumi [1 ,2 ]
Langdon, Terence G. [1 ,2 ,3 ]
机构：
[1] Univ So Calif, Dept Aerosp & Mech Engn, Los Angeles, CA 90089 USA
[2] Univ So Calif, Dept Mat Sci, Los Angeles, CA 90089 USA
[3] Univ Southampton, Sch Engn Sci, Mat Res Grp, Southampton SO17 1BJ, Hants, England
来源：
MATERIALS TRANSACTIONS | 2008年 / 49卷 / 01期
关键词：
equal-channel angular pressing; grain boundary sliding; superplasticity; ultrafine grains; zinc-aluminum alloy;
D O I：
10.2320/matertrans.ME200720
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A Zn-22% Al eutectoid alloy was processed by Equal-Channel Angular Processing (ECAP) to produce a grain size of similar to 0.8 mu m. Tensile testing at 473 K gave a maximum elongation of similar to 2230% at a strain rate of 1.0 x 10(-2) s(-1). The significance of grain boundary sliding was evaluated by taking measurements of offsets in surface marker lines at an elongation of 30%. The highest sliding contribution was recorded under testing conditions corresponding to the maximum superplastic elongation. Detailed measurements showed that relatively large offsets occurred at the Zn-Zn and Zn-Al interfaces but there were smaller offsets at the Al-Al interfaces. It is concluded that grain boundary sliding is the dominant flow process during superplastic deformation.
引用
收藏
页码：84 / 89
页数：6
相关论文
共 50 条
  • [41] Grain boundary character distribution of CuNiSi and FeNi alloys processed by severe plastic deformation
    Azzeddine, H.
    Baudin, T.
    Helbert, A. L.
    Brisset, F.
    Larbi, F. Hadj
    Tirsatine, K.
    Kawasaki, M.
    Bradai, D.
    Langdon, T. G.
    17TH INTERNATIONAL CONFERENCE ON TEXTURES OF MATERIALS (ICOTOM 17), 2015, 82
  • [42] Grain-boundary diffusion of nickel in submicrocrystalline molybdenum processed by severe plastic deformation
    G. P. Grabovetskaya
    I. P. Mishin
    I. V. Ratochka
    S. G. Psakhie
    Yu. R. Kolobov
    Technical Physics Letters, 2008, 34 : 136 - 138
  • [43] Deformation bands and the formation of grain boundaries in a superplastic aluminum alloy
    McNelley, TR
    Swisher, DL
    Pérez-Prado, MT
    METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 2002, 33 (02): : 279 - 290
  • [44] Deformation bands and the formation of grain boundaries in a superplastic aluminum alloy
    T. R. McNelley
    D. L. Swisher
    M. T. Pérez-Prado
    Metallurgical and Materials Transactions A, 2002, 33 : 279 - 290
  • [45] Computer simulation of grain boundary character in a superplastic aluminum alloy
    McNelley, TR
    Peréz-Prado, MT
    SUPERPLASTICITY-CURRENT STATUS AND FUTURE POTENTIAL, 2000, 601 : 3 - 14
  • [46] Grain boundary sliding contribution to superplastic deformation in alumina–zirconia composites
    O FLACHER
    J. J BLANDIN
    Journal of Materials Science, 1997, 32 : 3451 - 3456
  • [47] Aging behavior and mechanical properties of 6013 aluminum alloy processed by severe plastic deformation
    Liu, Man-ping
    Jiang, Ting-hui
    Wang, Jun
    Liu, Qiang
    Wu, Zhen-jie
    Yu, Ying-da
    Skaret, Pal C.
    Roven, Hans J.
    TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA, 2014, 24 (12) : 3858 - 3865
  • [48] Mechanical properties of a spray-cast aluminum alloy processed by severe plastic deformation
    Xu, Cheng
    Kawasaki, Megumi
    Furukawa, Minoru
    Horita, Zenji
    Langdon, Terence G.
    THERMEC 2006, PTS 1-5, 2007, 539-543 : 141 - +
  • [49] INTERFACE SLIDING, MIGRATION, AND CRACKING DURING FATIGUE DEFORMATION OF A SUPERPLASTIC ALUMINUM-ZINC EUTECTOID ALLOY
    BOWDEN, JW
    RAMASWAMI, B
    METALLURGICAL TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 1990, 21 (09): : 2497 - 2504
  • [50] Microstructure evolution and hardening behavior of 2024 aluminum alloy processed by the severe plastic deformation
    Kang, SB
    Lim, CY
    Kim, HW
    Mao, JF
    ALUMINUM ALLOYS 2002: THEIR PHYSICAL AND MECHANICAL PROPERTIES PTS 1-3, 2002, 396-4 : 1163 - 1168
12345