Abstract
Our recently developed Ti-6Cr-3Sn alloy exhibited shape memory effect and large fracture strain. However Ti-6Cr-3Sn alloy exhibited partial shape memory effect and low ultimate tensile strength (UTS). Then in this study, effects of decrease in Β grain size on the mechanical and shape memory properties of Β Ti-6Cr-3Sn alloy were investigated. Results of decrease in Β grain size were also compared with our recently reported uniform α phase precipitated Ti-6Cr-3Sn alloy. It was investigated that decrease in Β grain size was found effective in improving the strength, fracture strain and shape memory properties of Β Ti-6Cr-3Sn alloy due to the increase in critical stress for slip deformation. On the other hand, uniform precipitation of α phase in Β matrix of Ti-6Cr-3Sn alloy was found much more effective than decrease in Β grain size in improving the strength and shape memory properties of Β Ti-6Cr-3Sn alloy. However fracture strain of uniform α phase precipitated Ti-6Cr-3Sn alloy was lower than coarse and fine Β grain Ti-6Cr-3Sn alloy. It is concluded that decreasing Β grain size was found as effective way to improve the mechanical and shape memory properties altogether of Β Ti-6Cr-3Sn shape memory alloy. However decrease in Β grain size was found less effective than our recently reported effect of uniform precipitation of α phase in Β matrix of Β Ti-6Cr-3Sn alloy.
| Original language | English |
|---|---|
| Pages (from-to) | 829-835 |
| Number of pages | 7 |
| Journal | Materials Science and Engineering A |
| Volume | 559 |
| DOIs | |
| Publication status | Published - 2013 Jan 1 |
| Externally published | Yes |
Keywords
- Grain refinement
- Precipitation
- Shape recovery
- Strength
- Β-Titanium
ASJC Scopus subject areas
- Materials Science(all)
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering