Plastic behavior of nanophase metals studied by molecular dynamics

被引:162
作者
Van Swygenhoven, H [1 ]
Caro, A
机构
[1] Paul Scherrer Inst, CH-5232 Villigen, Switzerland
[2] Inst Balseiro, Ctr Atom Bariloche, RA-8400 San Carlos De Bariloche, Rio Negro, Argentina
来源
PHYSICAL REVIEW B | 1998年 / 58卷 / 17期
关键词
D O I
10.1103/PhysRevB.58.11246
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
We report molecular-dynamics simulations of plastic deformation of Ni nanophase samples with different grain structures, temperature, and applied stress. We analyze the mechanical and thermal activation of the elementary process contributing to plastic deformation at the grain boundaries and provide a quantitative interpretation in terms of a gene;al nonlinear viscous behavior whose temperature, stress, and grain-size dependence is determined. [S0163-1829(98)07941-7].
引用
收藏
页码:11246 / 11251
页数:6
相关论文
共 34 条
[21]  
RIDLEY N, 1995, SUPERPLASTICITY 60 Y
[22]   The strength of nanocrystalline metals with and without flaws [J].
Sanders, PG ;
Youngdahl, CJ ;
Weertman, JR .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 1997, 234 :77-82
[23]  
SANDERS PG, 1997, NANOSTRUCT MATER, V9, P669
[24]   Softening of nanocrystalline metals at very small grain sizes [J].
Schiotz, J ;
Di Tolla, FD ;
Jacobsen, KW .
NATURE, 1998, 391 (6667) :561-563
[25]  
SCHONFELDER B, 1997, INTERFACE SCI, V5, P1
[26]   Mechanical properties of nanophase metals [J].
Siegel, RW ;
Fougere, GE .
NANOSTRUCTURED MATERIALS, 1995, 6 (1-4) :205-216
[27]   Comparative structural studies of nanocrystalline materials processed by different techniques [J].
Valiev, RZ ;
Alexandrov, IV ;
Chiou, WA ;
Mishra, RS ;
Mukherjee, AK .
SYNTHESIS AND PROPERTIES OF MECHANICALLY ALLOYED AND NANOCRYSTALLINE MATERIALS, PTS 1 AND 2 - ISMANAM-96, 1997, 235-2 :497-505
[28]   Plastic behavior of nanophase Ni: A molecular dynamics computer simulation [J].
VanSwygenhoven, H ;
Caro, A .
APPLIED PHYSICS LETTERS, 1997, 71 (12) :1652-1654
[29]   Molecular dynamics computer simulation of nanophase Ni: Structure and mechanical properties [J].
VanSwygenhoven, H ;
Caro, A .
NANOSTRUCTURED MATERIALS, 1997, 9 (1-8) :669-672
[30]  
VANSWYGENHOVEN H, 1997, MATER RES SOC S P, V1492, P29