Abstract
The effects of the spark plasma sintering temperature on microstructure and dynamic mechanical properties of the tungsten heavy alloy with nano-crystalline 93W-4.9Ni-2.1Fe alloy powder as raw material were investigated. Results show that ultra-fine tungsten alloy with uniform microstructure can be prepared by the spark plasma sintering technology. In the sintering temperature range between 950°C and 1400°C, the average particle size of the tungsten heavy alloy increases from 2 μm to 10 μm with the sintering temperature elevation while the dynamic compressive strength decreases accordingly. During the process of dynamic compression the plasticity of samples sintered at the temperature between 1000°C and 1200°C is good. However, dynamic plasticity of samples sintered at the temperature between 1300°C and 1400°C is almost zero, showing typical brittle failure.
| Original language | English |
|---|---|
| Pages (from-to) | 1807-1810 |
| Number of pages | 4 |
| Journal | Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering |
| Volume | 39 |
| Issue number | 10 |
| Publication status | Published - Oct 2010 |
Keywords
- Fine grain
- Spark plasma sintering
- Tungsten heavy alloy