| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1616695 | Journal of Alloys and Compounds | 2011 | 7 Pages |
The microstructural characteristics of the Fe–9Al–30Mn–1C–5Ti (wt.%) alloy were determined by scanning electron microscopy, transmission electron microscopy, and energy-dispersive X-ray spectrometry. The microstructure of the alloy was essentially a mixture of (γ + TiCx + (α + B2 + DO3)) phases during solution treatment between 950 °C and 1150 °C. The TiCx carbide had a face-center-cubic structure with a lattice parameter a of 0.432 nm. When the as-quenched alloy was subjected to aging treatment at temperatures of 450–850 °C, the following microstructural transformation occurred: (γ + TiCx + κ + (α + DO3)) → (γ + TiCx + κ + (α + B2 + DO3 + TiCx)) → (γ + TiCx + κ + κ′ + (α + B2 + DO3)) → (γ + TiCx + (α + B2 + DO3)). Addition of Ti promotes the formation of the α phase at high temperatures.
► The microstructure of the as-quenched alloy is a mixture of γ, (α + B2 + DO3), and TiCx phases. ► The TiCx carbide had a face-center-cubic structure with a lattice parameter a = 0.432 nm.► Formation of the TiCx carbide causing a γ → (α + γ) transition in the matrix of the alloy. ► Addition of Ti promotes the formation of the α phase at high temperatures.
