Abstract
Superplastic deformation in metal matrix composites of titanium alloys was investigated during thermal cycling. The effect of whisker volume fraction on transformation superplasticity of the specimen was studied. The observed trends were explained in terms of load transfer from the matrix to whiskers during deformation. Experimental results revealed a linear relationship between the superplastic strain increment after each thermal cycle, and the applied tensile stress. There was a decrease in the deformation rate and achievable superplastic elongation with an increase in the volume fraction of reinforcement.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 631-638 |
| Number of pages | 8 |
| Journal | Scripta Materialia |
| Volume | 45 |
| Issue number | 6 |
| DOIs | |
| State | Published - Sep 28 2001 |
Funding
This work was funded by NSF (SBIR grant #9901850 through a subcontract from Dynamet Technology, Burlington, MA) and the US DOD (through a National Defense Science and Engineering Graduate Fellowship for CS). We also would like to thank Mr. W. Zimmer (of Dynamet Technology) and Prof. E. Sato (of the Institute of Space and Astronautical Science, Japan) for useful discussions.
Keywords
- Metal matrix composites
- Phase transformation
- Superplasticity
- Titanium alloys
ASJC Scopus subject areas
- General Materials Science
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering
- Metals and Alloys