Mechanochemical characteristics of Ca-added Mg-based alloys: A multimodality approach

被引：19
作者：
Bahmani, Ahmad [1 ]
Nayebi, Behzad [2 ]
Zonoozi, Soraya Bornay [3 ]
Wang, Lifei [4 ]
Shokouhimehr, Mohammadreza [5 ]
机构：
[1] Univ Tehran, Coll Engn, Sch Mat & Met Engn, Tehran, Iran
[2] Amirkabir Univ Technol, Tehran Polytech, Dept Mat & Met Engn, Tehran, Iran
[3] Mat & Energy Res Ctr MERC, Alborz, Iran
[4] Taiyuan Univ Technol, Coll Mat Sci & Engn, Taiyuan 030024, Shanxi, Peoples R China
[5] Seoul Natl Univ, Dept Mat Sci & Engn, Res Inst Adv Mat, Seoul 08826, South Korea
来源：
MATERIALS CHARACTERIZATION | 2020年 / 167卷
关键词：
Magnesium alloy; Extrusion; Corrosion rate; Tensile strength; Dynamic recrystallization; Microstructure; CORROSION BEHAVIOR; MAGNESIUM ALLOYS; CRYSTALLOGRAPHIC ORIENTATION; MECHANICAL-PROPERTIES; MICROSTRUCTURE; EXTRUSION; STRENGTH; MATRIX; AL; SI;
D O I：
10.1016/j.matchar.2020.110475
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Effect of calcium (Ca) addition in a novel magnesium (Mg) alloy including zinc, aluminum, and manganese from multimodal approaches was investigated to achieve a high strength and low corrosion rate material. Tensile and compression tests were carried out to measure the mechanical properties and precise analysis such as hydrogen evolution, weight loss, electro-chemical and scanning kelvin probe force microscopy to realize the corrosion behavior of the prepared Mg alloy. Ca addition had a significant effect in the ultimate strength of the alloy through second phase formation, effective grain refinement, and texture strengthening. However, it decreased the corrosion rate after long immersion time due to the secondary phase formation. Furthermore, low Ca content can be incorporated in the alloy because of the solubility limit of Ca in the matrix, which slightly increases the corrosion rate adjusting the optimum values of both strength and corrosion resistance.
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页数：16
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