Thermo-Mechanical Treatment of Extruded Mg-1Zn Alloy: Cluster Analysis of AE Signals

被引：0

作者：

Dobron, Patrik ^{[1
]}

Drozdenko, Daria ^{[1
]}

Hegedus, Marius ^{[1
]}

Olejnak, Juraj ^{[1
]}

Horvath, Klaudia ^{[1
,2
]}

Bohlen, Jan ^{[3
]}

机构：

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

[2] Czech Acad Sci, Nucl Phys Inst, Rez 130, Prague 25068, Czech Republic

[3] Helmholtz Zentrum Geesthaeht, Magnesium Innovat Ctr, Max Planck Str 1, D-21502 Geesthacht, Germany

来源：

MAGNESIUM TECHNOLOGY 2018 | 2018年

关键词：

Magnesium; Twinning; Annealing; Acoustic emission; Cluster analysis; ACOUSTIC-EMISSION; MAGNESIUM; DEFORMATION; COMPRESSION; MECHANISMS;

D O I：

10.1007/978-3-319-72332-7_34

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

The proper thermo-mechanical treatment can improve mechanical properties of extruded Mg alloys through a solute segregation and precipitation along twin boundaries. The effect of heat treatment on mobility of twin boundaries with respect to applied loading direction was studied in extruded Mg-1Zn alloy using the acoustic emission (AE) technique. The adaptive sequential k-means clustering (ASKC) was applied to analyze the AE data in order to determine the dominant deformation mechanism in a given time period. The AE energy, median frequency and the number of elements in individual AE clusters are the main parameters of presented clustering analysis. Active deformation mechanisms are discussed with respect to mutual orientation of grains and loading direction.

引用

页码：217 / 221

页数：5

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