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Microstructure, mechanical and corrosion properties of Mg–Dy–Gd–Zr alloys for medical applications ☆

Paper ID Volume ID Publish Year Pages File Format Full-Text
563 51 2013 10 PDF Available
Title
Microstructure, mechanical and corrosion properties of Mg–Dy–Gd–Zr alloys for medical applications ☆
Abstract

In previous investigations, a Mg–10Dy (wt.%) alloy with a good combination of corrosion resistance and cytocompatibility showed great potential for use as a biodegradable implant material. However, the mechanical properties of Mg–10Dy alloy are not satisfactory. In order to allow the tailoring of mechanical properties required for various medical applications, four Mg–10(Dy + Gd)–0.2Zr (wt.%) alloys were investigated with respect to microstructure, mechanical and corrosion properties. With the increase in Gd content, the number of second-phase particles increased in the as-cast alloys, and the age-hardening response increased at 200 °C. The yield strength increased, while the ductility reduced, especially for peak-aged alloys with the addition of Gd. Additionally, with increasing Gd content, the corrosion rate increased in the as-cast condition owing to the galvanic effect, but all the alloys had a similar corrosion rate (∼0.5 mm year−1) in solution-treated and aged condition.

Keywords
Mg–Dy–Gd–Zr alloys; Microstructure; Mechanical properties; Corrosion properties
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Microstructure, mechanical and corrosion properties of Mg–Dy–Gd–Zr alloys for medical applications ☆
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Publisher
Database: Elsevier - ScienceDirect
Journal: Acta Biomaterialia - Volume 9, Issue 10, November 2013, Pages 8499–8508
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
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Any Questions? feel free to contact us