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Effects of Nd on the microstructures, mechanical properties and in vitro corrosion behavior of cast Mg-1Mn-2Zn-xNd alloys

Zhou, Ying-Long, Li, Yuncang and Luo, Dong-Mei 2015, Effects of Nd on the microstructures, mechanical properties and in vitro corrosion behavior of cast Mg-1Mn-2Zn-xNd alloys, Materials transactions, vol. 56, no. 2, pp. 253-258, doi: 10.2320/matertrans.M2014338.

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Title Effects of Nd on the microstructures, mechanical properties and in vitro corrosion behavior of cast Mg-1Mn-2Zn-xNd alloys
Author(s) Zhou, Ying-Long
Li, Yuncang
Luo, Dong-Mei
Journal name Materials transactions
Volume number 56
Issue number 2
Start page 253
End page 258
Total pages 6
Publisher Japan Institute of Metals and Materials
Place of publication Sendai, Japan
Publication date 2015
ISSN 1345-9678
Keyword(s) magnesium alloy
microstructure
mechanical property
corrosion behavior
biodegradable material
Summary Effects of neodymium (Nd) on the microstructures, mechanical properties, in vitro corrosion behavior, and cytotoxicity of as-cast Mg- 1Mn-2Zn-xNd alloys (x = 0.5, 1.0, 1.5, mass%) have been investigated to assess whether Nd is an effective element to increase the strength and corrosion resistance of Mg alloys, and to evaluate whether those alloys are suitable for biomedical applications. The microstructures were examined by X-ray diffraction analysis and optical microscopy. The mechanical properties were determined from uniaxial tensile and compressive tests. The corrosion behavior was studied using electrochemical measurement and cytotoxicity was evaluated using osteoblast-like SaOS2 cell. The results indicate that all the cast Mg-1Mn-2Zn-xNd alloys are composed of both alpha phase of magnesium (Mg) and a compound of Mg7Zn3, and their grain sizes decrease with Nd content. Nd is not an effective element to improve the strength and corrosion resistance of cast Mg-Mn-Zn alloys. Increase of Nd content from 0.5 to 1.5 does not significantly change biocompatibility of alloys. The cast alloys exhibit much better corrosion resistance than pure Mg and good biocompatibility.
Language eng
DOI 10.2320/matertrans.M2014338
Field of Research 091207 Metals and Alloy Materials
0912 Materials Engineering
Socio Economic Objective 970109 Expanding Knowledge in Engineering
HERDC Research category C1 Refereed article in a scholarly journal
ERA Research output type C Journal article
Copyright notice ©2015, Japan Institute of Metals and Materials
Persistent URL http://hdl.handle.net/10536/DRO/DU:30080695

Document type: Journal Article
Collection: Institute for Frontier Materials
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