|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Advanced Materials in Dental and Orthopedic Applications
||A New Ni-free Beta-Ti Alloy with Large and Stable Room Temperature Super-elasticity
||Song Cai, J E Schaffer
|On-Site Speaker (Planned)
NiTi alloys have been largely used in medical applications benefited from their large super-elastic properties. However, allergic reactions caused by Ni have been continuously reported in some patients. To solve this, a Ni-free Ti-Hf based beta alloy was recently developed. Its’ mechanical properties and deformation behavior were investigated by cyclic tensile testing and in-situ synchrotron X-ray diffraction. Due to the reversible stress-induced martensite phase transformation, this material was able to fully recover 4% deformation strain after proper heat treatment. A maximum recoverable strain of above 5% can be achieved after 6% deformation strain. In addition, this alloy does not show room temperature aging effect that often observed in other beta Ti alloys with similar super-elastic behavior. Therefore, its mechanical properties are more stable at room temperature, which makes it a very good candidate for medical applications that require large strain recovery and a Ni-free environment.
||Planned: Supplemental Proceedings volume