Abstract
Results from microstructural study of Pulsed Electric
Current Sintering (PECS) of gas-atomized Ultra-High
Carbon Steel (UHCS) powder (1.8 % C, 1.8% Al, 1.4 % Cr)
are presented. Microstructural characterization, as well
as density and hardness measurements, was carried out to
evaluate the resulting microstructures and to establish
relationships between the processing conditions and the
microstructure. In most of the cases, the microstructure
featured a fine and uniform carbide structure in a matrix
consisting of pearlite. Sintering temperature had the
strongest influence over densification and
microstructure, while changes in heating rate or the
length of the dwell stage only resulted in minor
microstructural changes. On the other hand, considerable
microstructural changes were achieved by carrying out
cyclic heat treatments (post-sintering) by utilizing the
PECS equipment. Cyclic heat treatment across the A1
temperature was found to produce high content of very
fine carbides.
| Original language | English |
|---|---|
| Title of host publication | 5th International Conference on Spray Deposition and Melt Atomization |
| Subtitle of host publication | SDMA 2013 |
| Editors | Volker Uhlenvinkkel |
| Place of Publication | Bremen |
| Pages | 1-6 |
| Publication status | Published - 2013 |
| MoE publication type | A4 Article in a conference publication |
| Event | 5th International Conference on Spray Deposition and Melt Atomization, SDMA 2013 - Bremen, Germany Duration: 23 Sept 2013 → 25 Sept 2013 |
Conference
| Conference | 5th International Conference on Spray Deposition and Melt Atomization, SDMA 2013 |
|---|---|
| Abbreviated title | SDMA 2013 |
| Country/Territory | Germany |
| City | Bremen |
| Period | 23/09/13 → 25/09/13 |
Keywords
- powder
- gas atomization
- SPS