Tension/compression strength asymmetry in a simulated nanocrystalline metal

被引：72
作者：
Lund, AC
Nieh, TG
Schuh, CA
机构：
[1] MIT, Ctr Mat Sci & Engn, Cambridge, MA 02139 USA
[2] Lawrence Livermore Natl Lab, Div Mat Sci & Technol, Livermore, CA 94550 USA
来源：
PHYSICAL REVIEW B | 2004年 / 69卷 / 01期
关键词：
D O I：
10.1103/PhysRevB.69.012101
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We explore asymmetries in the plastic deformation of idealized nanocrystalline nickel through static molecular simulations. We find that both the yield and flow stresses of these materials are higher in compression than in tension. This result is discussed in the context of earlier work on metallic glasses, and it is suggested that very similar atomic-level mechanisms control yield in both of these materials classes.
引用
收藏
页数：4
相关论文
共 36 条
  • [1] Strength and tension/compression asymmetry in nanostructured and ultrafine-grain metals
    Cheng, S
    Spencer, JA
    Milligan, WW
    [J]. ACTA MATERIALIA, 2003, 51 (15) : 4505 - 4518
  • [2] A YIELD CRITERION FOR PD40NI40P20 METALLIC-GLASS
    DONOVAN, PE
    [J]. ACTA METALLURGICA, 1989, 37 (02): : 445 - 456
  • [3] Cooperative processes during plastic deformation in nanocrystalline fcc metals: A molecular dynamics simulation
    Hasnaoui, A
    Van Swygenhoven, H
    Derlet, PM
    [J]. PHYSICAL REVIEW B, 2002, 66 (18): : 1 - 8
  • [4] Strength of nanoscale polycrystalline copper under shear
    Heino, P
    Ristolainen, E
    [J]. PHILOSOPHICAL MAGAZINE A-PHYSICS OF CONDENSED MATTER STRUCTURE DEFECTS AND MECHANICAL PROPERTIES, 2001, 81 (04): : 957 - 970
  • [5] Compressive behavior of an electrodeposited nanostructured copper at quasistatic and high strain rates
    Jia, D
    Ramesh, KT
    Ma, E
    Lu, L
    Lu, K
    [J]. SCRIPTA MATERIALIA, 2001, 45 (05) : 613 - 620
  • [6] KOCH CC, 2001, MRS S P, V634
  • [7] Mechanical behavior of nanocrystalline metals and alloys
    Kumar, KS
    Van Swygenhoven, H
    Suresh, S
    [J]. ACTA MATERIALIA, 2003, 51 (19) : 5743 - 5774
  • [8] Effect of grain size on the elastic properties of nanocrystalline α-iron
    Latapie, A
    Farkas, D
    [J]. SCRIPTA MATERIALIA, 2003, 48 (05) : 611 - 615
  • [9] Microsample tensile testing of nanocrystalline metals
    Legros, M
    Elliott, BR
    Rittner, MN
    Weertman, JR
    Hemker, KJ
    [J]. PHILOSOPHICAL MAGAZINE A-PHYSICS OF CONDENSED MATTER STRUCTURE DEFECTS AND MECHANICAL PROPERTIES, 2000, 80 (04): : 1017 - 1026
  • [10] Effects of hydrostatic pressure on the flow and fracture of a bulk amorphous metal
    Lewandowski, JJ
    Lowhaphandu, P
    [J]. PHILOSOPHICAL MAGAZINE A-PHYSICS OF CONDENSED MATTER STRUCTURE DEFECTS AND MECHANICAL PROPERTIES, 2002, 82 (17-18): : 3427 - 3441
1234