Electrochemical behavior of a magnesium ZK60 alloy processed by high-pressure torsion

被引：59
|
作者：
Torbati-Sarraf, Hamidreza [1 ]
Torbati-Sarraf, Seyed Alireza [2 ,3 ]
Poursaee, Amir [1 ,4 ]
Langdon, Terence G. [2 ,3 ,5 ]
机构：
[1] Clemson Univ, Glenn Dept Civil Engn, Clemson, SC 29634 USA
[2] Univ Southern Calif, Dept Aerosp & Mech Engn, Los Angeles, CA 90089 USA
[3] Univ Southern Calif, Dept Mat Sci, Los Angeles, CA 90089 USA
[4] Clemson Univ, Dept Mat Sci & Engn, Clemson, SC 29634 USA
[5] Univ Southampton, Mat Res Grp, Dept Mech Engn, Southampton SO17 1BJ, Hants, England
来源：
CORROSION SCIENCE | 2019年 / 154卷
关键词：
HPT; Magnesium ZK60; EIS; Polarization; Mott-Schottky; ENHANCED CORROSION-RESISTANCE; AC-IMPEDANCE SPECTROSCOPY; GRAIN-SIZE; PURE MAGNESIUM; CRYSTALLOGRAPHIC ORIENTATION; HYDROGEN EVOLUTION; AZ91; AZ31; REFINEMENT; BODY;
D O I：
10.1016/j.corsci.2019.04.006
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
High-pressure torsion (HPT) was used to evaluate the effect of straining on the electrochemical properties of a ZK60 magnesium alloy. The samples were processed using HPT up to 20 turns and the electrochemical responses were examined through polarization, EIS, Mott-Schottky and hydrogen evolution tests. Electron back-scatter diffraction (EBSD) studies showed more homogeneity with finer average grain sizes accompanied by the evolution of a nobler texture when increasing the numbers of HPT turns. Ultimately, this led to improved corrosion behavior for the HPT-processed disks. Post corrosion observations revealed improved protective layers after higher turns of HPT.
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页码：90 / 100
页数：11
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