Tension/compression strength asymmetry in a simulated nanocrystalline metal

被引：75
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.
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页数：4
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