Characterization of mechanical properties and microstructure of a biomedical magnesium-calcium alloy

Y. B. Guo, V. S. Brooks, B. A. Todd

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Magnesium (Mg) alloys have various applications in the electronics, automobile, and aerospace industries due to their special material properties. It is generally believed that Magnesium-Calcium (Mg-Ca) alloys can be used for biodegradable implants. Mg-Ca alloys can be safely absorbed in the human body and they offer superior mechanical properties when compared to the current degradable polymers used for temporary implants. However, very few studies have been done on the mechanical properties and microstructures of Mg-Ca alloy. In this study, the Mg-Ca0.8 mechanical properties were obtained using the quasi-static and split-Hopkinson pressure bar (SHPB) materials tests. The experimental elastic modulus for Mg-Ca0.8 was 44.9 GPa. Some trends in the stress-strain curves were an increasing ultimate strength and yield strength with increasing strain rate from medium to high levels. The average grain size of undeformed Mg-Ca0.8 was 500 microns. The microstructure of Mg-Ca0.8 alloy had branch-like grain boundaries similar to the microstructure observed in magnesium alloy Mg3Al1Zn.

Original languageEnglish (US)
Title of host publicationMedical Device Materials V - Proceedings of the Materials and Processes for Medical Devices Conference
Pages74-79
Number of pages6
Publication statusPublished - Aug 26 2010
Externally publishedYes
Event5th Materials and Processes for Medical Devices Conference, MPMD - Minneapolis, MN, United States
Duration: Aug 10 2009Aug 12 2009

Publication series

NameMedical Device Materials V - Proceedings of the Materials and Processes for Medical Devices Conference

Conference

Conference5th Materials and Processes for Medical Devices Conference, MPMD
CountryUnited States
CityMinneapolis, MN
Period8/10/098/12/09

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All Science Journal Classification (ASJC) codes

  • Biomedical Engineering
  • Materials Chemistry

Keywords

  • Biomaterial
  • Implant
  • Magnesium-calcium alloy
  • Mechanical property
  • Microstructure

Cite this

Guo, Y. B., Brooks, V. S., & Todd, B. A. (2010). Characterization of mechanical properties and microstructure of a biomedical magnesium-calcium alloy. In Medical Device Materials V - Proceedings of the Materials and Processes for Medical Devices Conference (pp. 74-79). (Medical Device Materials V - Proceedings of the Materials and Processes for Medical Devices Conference).