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Mechanical properties and corrosion behavior of Mg-Gd-Ca-Zr alloys for medical applications
Shi, Ling-ling; Huang, Yuanding; Yang, Lei; Feyerabend, Frank; Mendis, Chamini; Willumeit, Regine; Kainer, Karl Ulrich; Hort, Norbert; llshi@imr.ac.cn
2015
Source PublicationJOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS
ISSN1751-6161
Volume47Pages:38-48
AbstractMagnesium alloys are promising candidates for biomedical applications. In this work, influences of composition and heat treatment on the microstructure, the mechanical properties and the corrosion behavior of Mg-Gd-Ca-Zr alloys as potential biomedical implant candidates were investigated. Mg5Gd phase was observed at the grain boundaries of Mg-10Gd-xCa-0.5Zr (x=0, 0.3, 1.2 wt%) alloys. Increase in the Ca content led to the formation of additional Mg2Ca phase. The Ca additions increased both the compressive and the tensile yield strengths, but reduced the ductility and the corrosion resistance in cell culture medium. After solution heat treatment, the Mg5Gd particles dissolved in the Mg matrix. The compressive strength decreased, while the corrosion resistance improved in the solution treated alloys. After ageing at 200 degrees C, metastable beta' phase formed on prismatic planes and a new type of basal precipitates have been observed, which improved the compressive and tensile ultimate strength, but decreased the ductility. (C) 2015 Elsevier Ltd. All rights reserved.
description.department[shi, ling-ling] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china ; [huang, yuanding ; yang, lei ; feyerabend, frank ; mendis, chamini ; willumeit, regine ; kainer, karl ulrich ; hort, norbert] helmholtz zentrum geesthacht, inst mat res, d-21502 geesthacht, germany
KeywordMagnesium Gadolinium Mechanical Properties Corrosion Behavior Biomedical Applications
Funding OrganizationChina Scholarship Council; Chinese Academy of Sciences; National Natural Science Foundation of China [51171180, 51001099]
Indexed Bysci
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/74959
Collection中国科学院金属研究所
Corresponding Authorllshi@imr.ac.cn
Recommended Citation
GB/T 7714
Shi, Ling-ling,Huang, Yuanding,Yang, Lei,et al. Mechanical properties and corrosion behavior of Mg-Gd-Ca-Zr alloys for medical applications[J]. JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS,2015,47:38-48.
APA Shi, Ling-ling.,Huang, Yuanding.,Yang, Lei.,Feyerabend, Frank.,Mendis, Chamini.,...&llshi@imr.ac.cn.(2015).Mechanical properties and corrosion behavior of Mg-Gd-Ca-Zr alloys for medical applications.JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS,47,38-48.
MLA Shi, Ling-ling,et al."Mechanical properties and corrosion behavior of Mg-Gd-Ca-Zr alloys for medical applications".JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS 47(2015):38-48.
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