3D atom probe investigation of cementite dissolution in a pearlitic steel processed by high pressure torsion

被引：0
|
作者：
Sauvage, X [1 ]
Dacosta, G [1 ]
Valiev, RZ [1 ]
机构：
[1] Univ Rouen, CNRS, UMR 6634, UFR Sci & Tech,Grp Phys Mat, F-76801 St Etienne, France
来源：
ULTRAFINE GRAINED MATERIALS III | 2004年
关键词：
pearlitic steel; 3D atom probe; severe plastic deformation;
D O I：
暂无
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The nanostructure of a pearlitic steel processed by high pressure torsion was investigated using Field Ion Microscopy and the 3D Atom Probe technique. The dissolution of cementite was pointed out and the data show that carbon atoms are located in dislocation arrays along the former ferrite/cementite interfaces. Moreover, 3D Atom Probe analysis revealed a significant redistribution of allowing elements (Si, Cr and Mn) which suggest a strong increase of the vacancy density during the severe plastic deformation.
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页码：31 / 36
页数：6
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