Abstract
Ni-free alloyed steel powder "FM Series" for high strength sintered compacts with excellent machinability has been developed. FM Series are pre-mixed powder based on a low Mo prealloyed (0.45 mass%) steel powder added with copper, graphite and lubricant for high density compaction. The sintered compacts of FM series provide tensile strength of 600 MPa with mesh-belt sintered condition and tensile strength of 1 000 MPa with mesh-belt sintered and carburized condition, which are equivalent to those of the conventional 4 mass% Ni diffusion- alloyed steel powder. The sintered compacts of FM series provide less than one fifth the tool wear of that of the conventional 4 mass% Ni diffusion-alloyed steel powder. The high strength and excellent machinability are caused by microstructure homogenization of the sintered compacts due to low Mo prealloyed steel powder.
| Original language | English |
|---|---|
| Pages (from-to) | 71-77 |
| Number of pages | 7 |
| Journal | JFE Technical Report |
| Issue number | 16 |
| Publication status | Published - Mar 1 2011 |
| Externally published | Yes |
All Science Journal Classification (ASJC) codes
- Mechanics of Materials
- Mechanical Engineering
- Metals and Alloys
- Materials Chemistry