Abstract
The behavior of solid copper-induced embrittlement (SCIE) of TC11 titanium alloy was investigated using slow strain rate tests (SSRT) and constant load tensile tests (DLTT) at different temperatures. TC11 specimens were contacted with copper by using ion beam enhanced deposition and mechanical pressure methods. The results show that the SCIE susceptibility of TC11 alloy is high at 500°C, but it is not noticeable at 300°C or 400°C when SSRT methods are used. While employing constant load tensile tests, the mechanical properties of TC11 alloy are slightly influenced by contacted copper at 500°C, but the fracture life and ductility of the titanium alloy are decreased remarkably at 550°C by copper pollution. The prerequisites for SCIE occurrence of this titanium alloy are as follow: copper must be in intimately contact with titanium alloy surface, suitable temperature and strain rate are need.
| Original language | English |
|---|---|
| Pages (from-to) | 1-5 |
| Number of pages | 5 |
| Journal | Hangkong Cailiao Xuebao/Journal of Aeronautical Materials |
| Volume | 26 |
| Issue number | 1 |
| State | Published - Feb 2006 |
Keywords
- Constant load tensile test
- Copper-induced embrittlement
- Slow strain rate test
- Titanium alloy