Controlled grain size distribution and refinement of an EN AW-6082 aluminium alloy

被引：2
|
作者：
Lampke, Thomas [1 ]
Dietrich, Dagmar [1 ]
Nickel, Daniela [1 ]
Bergmann, Markus [2 ]
Zachaeus, Rene [3 ]
Neugebauer, Reimund [2 ,3 ]
机构：
[1] Tech Univ Chemnitz, Inst Mat Sci & Engn, D-09107 Chemnitz, Germany
[2] Tech Univ Chemnitz, Inst Machine Tools & Prod Proc, D-09107 Chemnitz, Germany
[3] Fraunhofer Inst Machine Tools & Forming Technol I, Chemnitz, Germany
来源：
INTERNATIONAL JOURNAL OF MATERIALS RESEARCH | 2011年 / 102卷 / 08期
关键词：
Severe plastic deformation; Incremental forming; Graded grain size; Hardening; SEVERE PLASTIC-DEFORMATION; IMPROVEMENT;
D O I：
10.3139/146.110546
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
An EN AW-6082 aluminium alloy was subjected to incremental deformation by a new process named gradation rolling. The process has been used to generate a grain size distribution in a rod-shaped billet. A grain size gradient ranging from coarse-grained in the billet core to ultrafine-grained at the surface of the billet can be obtained. The grain size distribution has been confirmed by electron back-scatter diffraction showing the grain refinement related to the true strain. The fibre texture of the base material has been transformed to a rolling texture in the surface region. This results in strain-hardening and grain-boundary strengthening in the surface region (130 HV0.5) as compared to the unchanged core material (110 HV0.5).
引用
收藏
页码：977 / 981
页数：5
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