| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 831078 | Materials & Design (1980-2015) | 2012 | 7 Pages |
Intermetallics Ti–49Al (at.%) alloy was directionally solidified with different growth rates (V = 5 μm/s–30 μm/s) at a constant temperature gradient (G = 12.1 K/mm) by using a Bridgman type directional solidification furnace. The primary dendritic spacing (λ), interlamellar spacing (λL), and microhardness (HV) were measured. Effect of V on HV, λ and λL was experimental investigated. The dependencies of λ, λL and HV on the growth rate were determined by using linear regressing analysis. According to the result, the values of λ and λL decrease with the increasing of V, and the values of HV increase with the increasing of V and with the decreasing of λ and λL. The results were compared with previous similar experimental results for TiAl-based alloys.
► The α phase is the primary solidification phase in DS samples. ► The values of λ and λL decrease with the increasing of V. ► The values of HV increase with the increasing of V. ► The values of HV decrease with the increasing of λ and λL.
