Influence of ageing treatment on microstructure, mechanical and bio-corrosion properties of Mg-Dy alloys

被引：66

作者：

Yang, Lei ^{[1
]}

Huang, Yuanding ^{[1
]}

Feyerabend, Frank ^{[1
]}

Willumeit, Regine ^{[1
]}

Kainer, Karl Ulrich ^{[1
]}

Hort, Norbert ^{[1
]}

机构：

[1] Helmholtz Zentrum Geesthacht, MagIC Magnesium Innovat Ctr, Inst Mat Res, D-21502 Geesthacht, Germany

来源：

JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS | 2012年 / 13卷

关键词：

Mg-Dy alloys; Heat treatment; Mechanical properties; Bio-corrosion properties; IN-VIVO CORROSION; RARE EARTH ALLOYS; MAGNESIUM ALLOYS; WT.PERCENT ALLOY; BIOMEDICAL APPLICATION; HEAT-TREATMENT; PRECIPITATION; 250-DEGREES-C; EVOLUTION; BEHAVIOR;

D O I：

10.1016/j.jmbbm.2012.04.007

中图分类号：

R318 [生物医学工程];

学科分类号：

0831 ;

摘要：

Mg-Dy alloys have shown to be promising for medical applications. In order to investigate the influence of ageing treatment on their mechanical and corrosion properties, three Mg-xDy alloys (x=10, 15, 20 wt%) were prepared. Their microstructure, mechanical and corrosion behavior were investigated. The results indicate that ageing at 250 degrees C has little influence on the mechanical and corrosion properties. In contrast, ageing at 200 degrees C significantly increases the yield strength, and reduces the ductility. After ageing at 200 degrees C, the corrosion rate of Mg-20Dy alloy increases largely in 0.9 wt% NaCl solution, but remains unchanged in cell culture medium. (C) 2012 Elsevier Ltd. All rights reserved.

引用

页码：36 / 44

页数：9

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