Improvement of corrosion resistance and mechanical properties of a magnesium alloy using screw rolling

被引：34
作者：
Bahmani, Ahmad [1 ]
Arthanari, Srinivasan [1 ]
Shin, Kwang Seon [1 ]
机构：
[1] Seoul Natl Univ, Magnesium Technol Innovat Ctr, Sch Mat Sci & Engn, 1 Gwanak Ro, Seoul 08826, South Korea
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2020年 / 813卷
基金：
新加坡国家研究基金会;
关键词：
Magnesium alloy; Screw rolling; Corrosion rate; Volta-potential; Secondary phase; PURE MAGNESIUM; BEHAVIOR; MG; MICROSTRUCTURE; CA; AL; TEMPERATURE; EVOLUTION; NI; SI;
D O I：
10.1016/j.jallcom.2019.152155
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
An extruded Mg alloy was subjected to the screw rolling (SR) at different temperatures. The microstructure, corrosion behavior, and mechanical properties were analyzed. Electrochemical and immersion techniques were applied for corrosion behavior analysis. Moreover, scanning Kelvin probe force microscopy (SKPFM) was utilized to measure the surface Volta-potential. It was found that an increase in SR temperature decreased the strength by increasing the grain size and reducing the intermetallics. However, the corrosion rate was decreased from SR at 220-300 degrees C due to the dissolution of the intermetallics into the matrix and increased for the sample SRed at 340 degrees C due to significant grain growth. (C) 2019 Elsevier B.V. All rights reserved.
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页数：9
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