Abstract
The creep behaviors of high temperature titanium alloy determine the service life of components and the reliability of aero-engines. It is of significance to study the creep of high temperature titanium alloy in order to expand their engineering applications. In the present work, the heat treatment processing of a Ti-Al-Sn-Zr-W-Si high temperature titanium alloy was optimized. The creep properties of the alloy were studied. The microstructure and fracture surface of the alloy after creep tests were observed using by scanning electron microscopy. The results reveal that, after proper heat treatment, the alloy studied exhibits excellent creep properties at both 550°C and 600°C. The microstructure of the alloy notably changs after creep tests. Fiber-like microstructure can be detected in necking zone while small equiaxed grains resulting from dynamic recovery and recrystallization form in homogeneous plastic deformation zone.
| Original language | English |
|---|---|
| Pages (from-to) | 117-122 |
| Number of pages | 6 |
| Journal | Cailiao Kexue yu Gongyi/Material Science and Technology |
| Volume | 21 |
| Issue number | 4 |
| State | Published - Aug 2013 |
| Externally published | Yes |
Keywords
- Creep
- High-temperature titanium alloys
- Microstructure
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