On the Formation of Ordered ω‐phase in High Nb Containing γ‐TiAl Based Alloys

作者：Andreas Stark, Arno Bartels, Helmut Clemens, Frank Peter Schimansky · 发表于：Advanced Engineering Materials · 年份：2008 · DOI：10.1002/adem.200800188 · 被引用次数：56 · 研究领域：Intermetallics and Advanced Alloy Properties、MXene and MAX Phase Materials、Semiconductor materials and interfaces

In Ti-45Al-10Nb the β/B2-phase transforms below 913 °C into B82 ordered ω-phase. During deformation of Ti-45Al-(5-7.5)Nb at 800 °C the ω/B82-phase occurs in absence of β/B2-phase on the expenses of α2-Ti3Al phase. During long term exposure to 800 °C a very slow transformation α2 into ω/B82- and γ-phase is observed. Small carbon additions hamper the formation of ω/B82-phase.