About this Abstract |
Meeting |
12th International Conference on Magnesium Alloys and their Applications (Mg2021)
|
Symposium
|
12th International Conference on Magnesium Alloys and their Applications (Mg 2021)
|
Presentation Title |
Effects of Phase Fractions on Mechanical and Corrosion Properties of Mg-0.5Ca-0.5Mn-xZn Alloys |
Author(s) |
Thomas Avey, Alan Luo, David Dean |
On-Site Speaker (Planned) |
Thomas Avey |
Abstract Scope |
Magnesium alloys have the potential to be used in new bioabsorbable medical devices because of their similar elastic response as bone, low toxicity, and lightweight. Current commercial Mg alloys are lacking in mechanical strength or corrosion resistance or contain harmful elements. Mg-Ca-Zn alloys have been of particular interest due to their balanced corrosion resistance and mechanical properties. By using a phase-based CALPHAD (CALculation of PHAse Diagrams) approach, microstructure with the most desirable mechanical properties and lowest corrosion rate can be designed. The three secondary phases that are under investigation are Mg2Ca, Ca2Mg6Zn3, and MgZn. Four compositions, Mg-0.5Ca-xZn (x=0, 0.5, 1.2, 2) were selected that were calculated through CALPHAD to contain different amounts of these phases. Corrosion rate is determined through weight loss measurements after immersion in SBF (Simulated Body Fluid). Mechanical properties are measured by ASTM E9 tensile and compression tests |
Proceedings Inclusion? |
Planned: At-meeting proceedings |