Abstract
The evolution of sulfide morphology in the Fe-(0.3 to 18) mass% Cr-0.3 mass% S alloys during solidification and its modification by additions of elements such as Mn, Ti, Zr and C have been investigated by means of optical microscopy, scanning electron microscopy and X-ray diffraction. The sulfide morphologies in the Fe-Cr-S ternary alloy are classified under three types: (i) cellwall (ii) fine particle and (iii) globular sulfides. The iron-rich cellwall sulfide is formed in the Fe-(0.3-1) %Cr-0.3 %S alloys. This sulfide morphology changes to the globular type with increasing Cr content and the size of that is more than 5 μm. Fine sulfide particles of size smaller than 2 μm also coexist in the Fe-(0.3-5) %Ct-0.3 %S alloys. Zr or Ti additions change this morphology from the globular type to the rod-like type in the Fe-18 %Cr-0.3 %S alloy, but Mn addition does not have the same effect. The mechanism of the formation of different sulfide morphologies is discussed on the basis of phase diagram information.
| Original language | English |
|---|---|
| Pages (from-to) | 369-374 |
| Number of pages | 6 |
| Journal | Materials Research Society Symposium - Proceedings |
| Volume | 580 |
| Publication status | Published - 2000 Dec 1 |
| Event | Nucleation and Growth Processes in Materials - Boton, MA, USA Duration: 1999 Nov 29 → 1999 Dec 1 |
ASJC Scopus subject areas
- Materials Science(all)
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering