Computationally-designed transformation-toughened near-alpha titanium alloy
US10053759B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 28, 2015 |
| Grant date | Aug 21, 2018 |
| Priority date | — |
| Expiry date | Jul 19, 2036 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22C14/00
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
In one aspect, a method of computationally designing a near-α transformation-induced plasticity (TRIP) titanium (Ti) alloy is provided. A thermodynamic database of Ti alloys is created. The data of the thermodynamic database is tailored for martensitic transformations in the Ti alloys near room temperature. Then an overall composite of the near-α TRIP Ti alloy may be obtained by adjusting a reference overall composite of a reference near-α Ti alloy based on the tailored data in the thermodynamic database. In certain embodiments, an annealing temperature of the near-α TRIP Ti alloy may be determined such that a MSσ(ct) temperature of the near-α TRIP Ti alloy is about room temperature. In certain embodiments, the near-α TRIP Ti alloy is Ti-8Al-1V-1Sn-1Zr-0.6Mo-0.9Fe-0.1Si-0.1O by weight percentage. In certain embodiments, the near-α TRIP Ti alloy may be cooled at a cooling rate greater than 20° C./min after annealing to inhibit formation of grain-boundary α (GB-α) phase.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.