Article ID Journal Published Year Pages File Type
1498681 Scripta Materialia 2013 4 Pages PDF
Abstract

The omega phase in as-cast high-Nb-containing TiAl alloy exhibits particles with sizes on the nano- or microscale within the B2 matrix. Omega particles are transformed from the B2 phase by heterogeneous nucleation on the B2/γ boundaries or homogeneous nucleation within the B2 phase. After annealing at 900 °C, the omega particles disappear and transform into B2 phase. The transformation is rapidly initiated, but is difficult to complete.

Related Topics
Physical Sciences and Engineering Materials Science Ceramics and Composites
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