3D atom probe investigation of nanocomposite wires

被引：0
|
作者：
Sauvage, X [1 ]
Guillet, A [1 ]
Danoix, F [1 ]
Blavette, D [1 ]
机构：
[1] Univ Rouen, CNRS, UMR 6634, F-76821 Mt St Aignan, France
来源：
JOURNAL DE PHYSIQUE IV | 2000年 / 10卷 / P6期
关键词：
D O I：
10.1051/jp4:2000616
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Two kinds of high strength nanocomposite wires produced under heavy plastic deformation were investigated using 3D Atom Probe. First, cold drawn pearlitic steel wires were analysed. Partly dissolved cementite lamellae were mapped out in 3D. The surface to volume ratio of cementite lamellae was correlated to their dissolution rate. Considering the increase of the interfacial energy during drawing, a model based on simple thermodynamical arguments was developed to estimate the global dissolution rate of cementite. Cu/Nb nanocomposite wires were also studied. Their nanoscale cross-section microstructure was revealed for the first time. 3D Atom Probe analysis pointed out a slight inter-diffusion of copper and niobium, and steps in copper channels attributed to tracks of moving dislocations in the (111) Cu plane, along the < 110 > direction.
引用
收藏
页码：91 / 96
页数：6
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