Abstract
In the present work, the influence of temperature-related factors, including sintering temperature, heating step and temperature-control mode, on the densification, microstructure and mechanical properties of Ti-46.5Al-2.15Cr-1.90Nb-(B, Y, Mo) alloys prepared by SPS has been investigated and discussed in detail. The results obviously indicate that the sintering temperature plays a key role on densification and phase transition, when compared with the heating step and temperature-control mode. Based on the experimental results and theoretical analysis, the densification process and microstructural evolution of TiAl-based alloys during sintering are studied. Moreover, the mechanical properties of the sintered alloys are determined by the combined effects of the densification and microstructure. The obtained results will help to optimize the microstructure and properties for this kind of intermetallic alloys through controlling sintering parameters during powder metallurgy process.
| Original language | English |
|---|---|
| Pages (from-to) | 2555-2563 |
| Number of pages | 9 |
| Journal | Advanced Powder Technology |
| Volume | 30 |
| Issue number | 11 |
| DOIs | |
| State | Published - Nov 2019 |
Keywords
- Mechanical property
- Microstructure evolution
- Spark plasma sintering
- Temperature-related factors
- TiAl-based alloys
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