Strain effects on the coarsening and softening of electrodeposited nanocrystalline Ni subjected to high pressure torsion

被引：46
作者：
Yang, Bo [1 ]
Vehoff, Horst [2 ]
Hohenwarter, Anton [3 ,4 ]
Hafok, Martin [3 ]
Pippan, Reinhard [3 ,4 ]
机构：
[1] Mat Ctr Leoben, Forschungs GmbH, A-8700 Leoben, Austria
[2] Univ Saarland, Dept Mat Sci, D-66041 Saarbrucken, Germany
[3] Austrian Acad Sci, Erich Schmid Inst Festkorperphys, A-8700 Leoben, Austria
[4] CD Lab Local Analysis Deofrmat & Fracture, A-8700 Leoben, Austria
来源：
SCRIPTA MATERIALIA | 2008年 / 58卷 / 09期
关键词：
nanocrystalline Ni; high pressure torsion; grain coarsening; strain effect;
D O I：
10.1016/j.scriptamat.2007.12.039
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The softening of electrodeposited nanocrystalline nickel due to grain coarsening caused by high pressure torsion at room temperature was studied. The extent of coarsening and softening increases with increasing applied strains, indicating that large strains and high stresses are required to induce grain growth in nanocrystalline metals. (C) 2008 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：790 / 793
页数：4
相关论文
共 30 条
  • [1] Cyclic softening of ultrafine grain copper
    Agnew, SR
    Weertman, JR
    [J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 1998, 244 (02): : 145 - 153
  • [2] Grain coarsening during compression of bulk nanocrystalline nickel and copper
    Brandstetter, S.
    Zhang, Kai
    Escuadro, A.
    Weertman, J. R.
    Van Swygenhoven, H.
    [J]. SCRIPTA MATERIALIA, 2008, 58 (01) : 61 - 64
  • [3] Grain growth in a bulk nanocrystalline Co alloy during tensile plastic deformation
    Fan, GJ
    Fu, LF
    Qiao, DC
    Choo, H
    Liaw, PK
    Browning, ND
    [J]. SCRIPTA MATERIALIA, 2006, 54 (12) : 2137 - 2141
  • [4] THE DEFORMATION AND AGEING OF MILD STEEL .3. DISCUSSION OF RESULTS
    HALL, EO
    [J]. PROCEEDINGS OF THE PHYSICAL SOCIETY OF LONDON SECTION B, 1951, 64 (381): : 747 - 753
  • [5] Microstructural study of the parameters governing coarsening and cyclic softening in fatigued ultrafine-grained copper
    Höppel, HW
    Zhou, ZM
    Mughrabi, H
    Valiev, RZ
    [J]. PHILOSOPHICAL MAGAZINE A-PHYSICS OF CONDENSED MATTER STRUCTURE DEFECTS AND MECHANICAL PROPERTIES, 2002, 82 (09): : 1781 - 1794
  • [6] JI M, 2004, ACTA MAT, V52, P5381
  • [7] Ductility of nanostructured materials
    Koch, CC
    Morris, DG
    Lu, K
    Inoue, A
    [J]. MRS BULLETIN, 1999, 24 (02) : 54 - 58
  • [8] Deformation of electrodeposited nanocrystalline nickel
    Kumar, KS
    Suresh, S
    Chisholm, MF
    Horton, JA
    Wang, P
    [J]. ACTA MATERIALIA, 2003, 51 (02) : 387 - 405
  • [9] High-pressure torsion-induced grain growth in electrodeposited nanocrystalline Ni
    Liao, XZ
    Kilmametov, AR
    Valiev, RZ
    Gao, HS
    Li, XD
    Mukherjee, AK
    Bingert, JF
    Zhu, YT
    [J]. APPLIED PHYSICS LETTERS, 2006, 88 (02) : 1 - 3
  • [10] Deformation twins in nanocrystalline Al
    Liao, XZ
    Zhou, F
    Lavernia, EJ
    He, DW
    Zhu, YT
    [J]. APPLIED PHYSICS LETTERS, 2003, 83 (24) : 5062 - 5064
123