|About this Abstract
||2016 TMS Annual Meeting & Exhibition
||Advanced Materials in Dental and Orthopedic Applications
||Room Temperature Aging of Ti-Nb based Beta Alloys
||Song Cai, J E Schaffer, Y Ren
|On-Site Speaker (Planned)
Recently, materials that have mechanical properties between the NiTi super-elastic alloys (e.g. nitinol) and stainless steels (e.g. 316L) are highly demanded by medical industries. In searching such materials, several Ti-Nb based alloys with various Cr and Fe content were melted, hot extruded and cold drawn into a wire form to a diameter of 0.5mm. After annealed at temperatures around 700˚C, all alloys show both shape memory and super-elastic properties. A maximum recovery strain of 3.8% was obtained. In the meantime, room temperature aging was also observed in these alloys, which quickly changed the stress-strain behavior and super-elastic properties. Synchrotron X-ray diffraction is used to study the room temperature aging behavior, which is found associated with the formation of the omega phase. In addition, In-situ synchrotron X-ray diffraction tensile test is used to study the influences of room temperature aging on the deformation mechanism of these materials.
||Planned: A print-only volume