| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Ultrafine-grained and Heterostructured Materials (UFGH XI)
|
| Presentation Title |
N-38: Optimization of Mechanical Properties and Corrosion Resistance of Ultra-fine Grained Titanium By Low-temperature Annealing |
| Author(s) |
Agata Sotniczuk, Krzysztof Topolski, Halina Garbacz |
| On-Site Speaker (Planned) |
Agata Sotniczuk |
| Abstract Scope |
Annealing deformed metals usually leads to reduced strength. In the case of nano and ultra-fine grained (UFG) materials, the opposite effect was observed after low-temperature annealing. This unusual phenomenon may be related to the 1) reduction of mobile dislocation density and changes in the grain boundaries state, 2) segregation of impurities, 3) crystallographic texture changes. This factors may also affect the quality of the protective passive layers formed spontaneously on UFG titanium surface and, thereby its corrosion resistance. Hence, in this work the possibility of increase both hardness and corrosion resistance of UFG Ti was investigated. UFG Ti was fabricated by multiple-pass cold rolling performed by different deformation paths. The changes of mechanical and corrosion properties were explained based on the microstructure evolution induced by low-temperature annealing.
This work was supported by NCN Poland [2018/29/B/ST8/02883] |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume; Planned: Supplemental Proceedings volume |