An Acoustic Emission Study of Deformation Behavior of Wrought Mg Alloys

被引：0

作者：

Dobron, Patrik ^{[1
]}

Drozdenko, Daria ^{[1
]}

Yi, Sangbong ^{[2
]}

Bohlen, Jan ^{[2
]}

机构：

[1] Charles Univ Prague, Fac Math & Phys, Dept Phys Mat, Ke Karlovu 5, Prague 12116 2, Czech Republic

[2] Zentrum Mat & Kustenforsch GmbH, Helmholtz Zentrum Geesthacht, Max Planck Str 1, D-21502 Geesthacht, Germany

来源：

MAGNESIUM TECHNOLOGY 2017 | 2017年

关键词：

Magnesium alloy; Acoustic emission; Twinning; Detwinning; EBSD; GRAIN-SIZE; MAGNESIUM;

D O I：

10.1007/978-3-319-52392-7_84

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The influence of the pre-compression level on subsequent tensile deformation behavior has been investigated for two extruded Mg alloys with a different grain size distribution. The Mg-Zn-R are earth alloy has homogeneous microstructure, while the Mg-Al-Zn alloy exhibits bimodal microstructure. Deformation tests were performed at room temperature and at a constant strain rate of 10(-3) s(-1). Three pre-compression stress levels were chosen to receive microstructure containing a low number of twins, partially and fully twinned grains, respectively. The concurrent acoustic emission (AE) measurement provides real time information about collective dislocation motion and twin nucleation. Active deformation mechanisms during tensile loading are discussed in term of the AE response.

引用

页码：613 / 617

页数：5

共 14 条

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