Please consider attending the following: MATERIALS ENGINEERING SEMINAR "Fe-Mn Alloys as Biodegradable Metallic Materials" By Duo Huang Purdue MSE Ph.D. Preliminary Exam Advisors: Professors David Johnson and Professor Matthew J. M. Krane ABSTRACT Biodegradable metallic materials are considered promising candidates to replace traditional permanent implants. Among all the metallic materials studied, Fe-Mn alloys show their potential to be a new type of biodegradable alloys. In this study, the design strategy of Fe-Mn alloys and the factors affecting Fe-Mn alloys' biodegradation behavior as well as mechanical properties are discussed. For alloy designing, adding less noble elements to form a solid solution and adding nobler elements to form intermetallic phases can both accelerate corrosion rates. The mechanical properties of Fe-Mn alloys are also discussed in the study. The effect of Mn concentration and intermetallic phases can modify alloys' mechanical properties. Considering all the factors discussed, a type of high manganese steel, Hadfield steel with 1.0 - 1.4 wt.% C and 10 - 14 wt.% Mn is proposed. Its unique properties make it possible to improve corrosion rate and mechanical properties at the meantime. Date: Friday, December 8, 2017 Time: 1:30 P.M. Place: HAMP 1113