| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Defects and Properties of Cast Metals
|
| Presentation Title |
C-9: Restricting Carbide Growth in High-chrome White Iron Using Sr-containing Additives |
| Author(s) |
Owais Ahmed Waseem, Harry H Tian |
| On-Site Speaker (Planned) |
Owais Ahmed Waseem |
| Abstract Scope |
This study focused on controlling the carbide size in white cast iron to increase wear resistance and overall mechanical properties. Up to 0.15wt.% pure Sr, SrFe12O19, and/or SrCrO4 were added in a hypoeutectic (Hypo-E) and a hypereutectic (Hyper-E) white iron. The addition of Sr-containing additives didn’t seem to affect the hardness of the selected white irons. Microstructures revealed significant carbide refining by the addition of SrCrO4. The average carbide size near the base of the 3”x4”x5” sample was ~18 µm and ~33 µm in Hypo-E and Hyper-E, respectively. After the addition of 0.15wt.% SrCrO4, the carbide size reduced to ~10 µm and ~20 µm in Hypo-E and Hyper-E, respectively. The linear wear rate (µ/h) and volume loss (mm3) analysis showed a reduction from 25 µ/h to 22 µ/h and 24 mm3 to 18 mm3 in Hyper-E due to 0.15wt.% SrCrO4 addition. The possible carbide refining mechanisms were discussed. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Iron and Steel, Mechanical Properties, Other |