Growth of deformation twins in room-temperature rolled nanocrystalline nickel

被引：20

作者：

Zhang, X. Y. ^{[1
,2
]}

Wu, X. L. ^{[3
]}

Zhu, A. W. ^{[2
]}

机构：

[1] Chongqing Univ, Sch Mat Sci & Engn, Chongqing 400030, Peoples R China

[2] Guangxi Univ, Phys Sci & Engn Technol Sch, Nanning 530004, Peoples R China

[3] Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China

来源：

APPLIED PHYSICS LETTERS | 2009年 / 94卷 / 12期

关键词：

dislocations; grain boundaries; nanostructured materials; nanotechnology; nickel; transmission electron microscopy; twin boundaries; twinning; MOLECULAR-DYNAMICS SIMULATION; AL; MECHANISM; METALS; SLIP; NI;

D O I：

10.1063/1.3104858

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Deformation twinning has been observed in room-temperature rolled nanocrystalline Ni. The growth of the deformation twins via the emission of partial dislocations from a grain boundary has been examined in detail. Partial dislocations on neighboring slip planes may migrate for different distances and then remain in the grain interior, leading to the formation of a steplike twin boundary (TB). With continued twin growth, the TBs become gradually distorted and lose their coherent character due to accumulated high stresses. Moreover, we propose that microtwins may form near such TBs due to the emission of partial dislocations from the TB.

引用

页数：3

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