The stability of the β phase in Cr-containing Ti-Al ternary alloys was investigated. Chromium was enriched in the α2 and β following heat treatment. Thermomechanical processing (TMP) resulted in the precipitation of a Cr-enriched β (B2) at grain boundaries. Upon subsequent heat treatment, the β phase transformed to α2+γ, accompanied by a lowering of the Cr enrichment in the α2. Thus, TMP followed by heat treatment is a minimum requirement for equilibration. The oxygen deteriorating room temperature deformability was confirmed to be located in the α2 but not in the β. Stabilization of the β phase was achieved by the addition of Group VIa elements.
|Number of pages||8|
|Publication status||Published - 1995|
|Event||Proceedings of the 1995 124th TMS Annual Meeting - Las Vegas, NV, USA|
Duration: 1995 Feb 13 → 1995 Feb 16
|Conference||Proceedings of the 1995 124th TMS Annual Meeting|
|City||Las Vegas, NV, USA|
|Period||95/2/13 → 95/2/16|