Processing—Microstructure—Property Relationships of Titanium and Titanium Alloys: Poster Session
Sponsored by: TMS Titanium Committee
Program Organizers: Yufeng Zheng, University of North Texas; Rongpei Shi, Harbin Institute of Technology; Michael Gram, Pratt & Whitney
Tuesday 11:00 AM
October 19, 2021
Room: Exhibit Hall B
Location: Greater Columbus Convention Center
P1-29: Hierarchical Twinning Microstructure in the Metastable β Ti-24Nb-4Zr-8Sn Alloy: Wenrui Zhao1; Dian Li1; Yufeng Zheng1; 1University of Nevada, Reno
Ti-24Nb-4Zr-8Sn (wt.%, Ti2448) is a novel metastable β titanium alloy which has attracted significant attentions in recent years as a promising bio-medical used vanadium free titanium alloy, due to its combination of excellent properties, such as ultra-low modulus, great ductility, and excellent biocompatibility. Both twinning induced plasticity (TWIP) and transformation induced plasticity (TRIP) have been found in Ti2448, which plays important role in improving the ductility of Ti2448. In this work, the microstructure of solution-treated and cold-rolled Ti2448 alloy has been systematically investigated using scanning electron microscopy (SEM) and transmission electron microscopy (TEM). A large number of hierarchical deformation twins were observed in Ti2448 after the cold rolling process, including primary {332}<113> deformation twin and secondary {112}<111> deformation twin. Interestingly, some unusual twinning substructures were characterized in Ti2448 via TEM, which will be introduced in detail in this presentation.
Poster
P1-30: Analysis of Temperature Factor Influence on the Nature of the Titanium Alloy Deformation during Extrusion: Anton Matiukhin1; Anna Ben1; Vitalii Shyrokobokov1; Sergey Sheyko1; Elena Kulabneva1; 1“Zaporizhzhia Polytechnic” National University
A method for determining the strain temperature influence on the stress-strain state and structural titanium alloy transformations is proposed. Based on the process calculation by the finite element method (QForm) and experimental studies of structural transformations, the relationship between the stress-strain state and the state of the workpiece after deformation is shown. The obtained technique can be used in order to develop technological parameters for the titanium blanks manufacture by the extrusion with specified properties.