Mechanical and corrosion properties of biodegradable Mg-1.5Mn-1Ca-xSr alloys

被引：1
作者：
Sun, X. [1 ]
Sun, S. Y. [2 ]
Ning, Y. H. [1 ]
Ning, Y. T. [3 ]
机构：
[1] Datang Northeast Elect Power Test & Res Inst, 3195 Weishan St, Changchun 130000, Jilin, Peoples R China
[2] Changchun Vocat Inst Technol, Brand Sch Engn & Technol, Changchun 130033, Peoples R China
[3] State Grid Jilin Elect Power Co, 4969 Renmin St, Changchun 130000, Jilin, Peoples R China
来源：
17TH IUMRS INTERNATIONAL CONFERENCE IN ASIA (IUMRS-ICA 2016) | 2017年 / 182卷
关键词：
Biodegradable; T4; treatment; Microstructure; Mechanical properties; Corrosion; MAGNESIUM CORROSION; CA ALLOY; MG; CALCIUM; BEHAVIOR; STRONTIUM;
D O I：
10.1088/1757-899X/182/1/012049
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
The mechanical properties and corrosion mechanism of both as-cast and solution-naturally age (T4) treated Mg-1.5Mn-1Ca-xSr alloys were investigated. The results showed that Sr is helpful to decrease grain size and increase the strength. The corrosion process of alloys was mainly determined by the quantity and distribution of second phases. Mg17Sr2, alpha-Mn and Ca-Sr phases acted as cathodes accelerated the corrosion of Mg2Ca anodic phase and alpha-Mg matrix. However, continuous distributed Mg17Sr2 was beneficial to resist the happening of localized corrosion because of its barrier effect. T4 treatment could significantly improve the mechanical properties and corrosion resistance of Mg alloys because of the dissolution of Mg2Ca phase and the dispersive distribution of Mg17Sr2 and alpha-Mn phases.
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页数：11
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