About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advances in Titanium Technology
|
| Presentation Title |
Effect of varying titanium nitride fractions on high-temperature properties of titanium-titanium nitride metal matrix composites |
| Author(s) |
Shiraz Mujahid, Dawn Van Iderstine, YubRaj Paudel, Blake Stewart, Jong-Hoon Lee, Sang-Gyu Nam, Jungho Shin, Sangha Park, Hwi-Jun Kim, Hongjoo Rhee |
| On-Site Speaker (Planned) |
Shiraz Mujahid |
| Abstract Scope |
Titanium alloys exhibit excellent performance in corrosive environments, with grade 12 being known for resistance to crevice corrosion at elevated temperatures. High pressure acid leaching (HPAL) is a process for extracting nickel and cobalt by dissolution of ore in concentrated acids at temperatures up to 250°C. While grade 12 titanium is the material of choice for HPAL systems, the combination of harsh operating conditions and surface wear results in titanium ball valves accounting for ~40% of maintenance costs at HPAL facilities. To address this issue, titanium nitride (TiN) is introduced to enhance wear resistance, with additive manufacturing serving as a feasible method of cladding ball valves. The present study examines spark plasma sintered metal matrix composite samples with six different ratios of grade 12 titanium to TiN (0-50% TiN) using ambient and elevated temperature indentation as well as Gleeble thermomechanical testing, with microstructural characterization being used to establish structure-property relationships. |
| Proceedings Inclusion? |
Planned: |