|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Magnesium Technology 2017
||A Comparative Study on the Microstructure, Mechanical Properties, and Hot Deformation of Magnesium Alloys Containing Zinc, Calcium and Yttrium
||K.P. Rao, K. Suresh, Hajo Dieringa, Norbert Hort
|On-Site Speaker (Planned)
Some magnesium alloys are considered as biocompatible materials because they are biodegradable or bioabsorable in body fluids without causing health hazards. Zn and Ca are essential micronutrients in the body and their bio-absorption is beneficial when an orthopedic implant corrodes in a controlled manner. Yttrium in small quantity can be added to improve the mechanical properties. Cast alloys are hot worked to obtain wrought microstructures so as to develop components of superior and consistent properties. In this study, the microstructure and mechanical properties of four magnesium alloys containing zinc, calcium and yttrium in different combinations are compared. It is found that calcium is an excellent grain refiner whereas yttrium increases the grain size. While all these elements provide strengthening, calcium is found to be the most effective one in combination with zinc. The hot working of these alloys over broad ranges of temperature and strain rate will also be compared.