Efficient access to ultrafine crystalline metastable-β titanium alloy via dual-phase recrystallization competition
Abstrak
In order to reduce the deformation resistance, the rolling process of metastable β titanium alloys is generally carried out in the β single-phase state, which causes the problem of non-uniform grain size during the subsequent annealing process, thus affecting the alloy properties. Here we first solution-treated the as-cast Ti–15Mo–3Al-2.7Nb-0.2Si alloy at 740 °C to obtain α + β phase, then cold rolled it with a reduction of 60 %, and finally annealed it at 710–810 °C for 2–240min. Characterization of the annealed metastable β alloy revealed that α phase was involved in the rolling deformation at the same time and recrystallized on the β matrix during the subsequent annealing process, known as equiaxial dispersion, which impeded the recrystallization of the β grains, and ultimately an ultrafine crystalline microstructure of α + β phases with an average grain size of less than 2 μm was obtained.
Topik & Kata Kunci
Penulis (10)
Xudong Kang
Zhaoxin Du
Zhen Wang
Zhiyong Yue
Shaojun Wang
Jie Li
Tianhao Gong
Jun Cheng
Jingshun Liu
Shuzhi Zhang
Akses Cepat
- Tahun Terbit
- 2024
- Sumber Database
- DOAJ
- DOI
- 10.1016/j.jmrt.2024.01.101
- Akses
- Open Access ✓