A new mechanism of dynamic phase transformations of α ↔ γ in an isothermally forged γ-TiAl-based alloy that occur simultaneously during a short-term exposure at 1000 °C is identified in this study. In the heating process, γ phase significantly decreases through a phase transformation of γ → α, while new γ lamellae are precipitated in the interior of equiaxed grains of α phase through a phase transformation of α → γ. The reasons for the presence of these two inverse phase transformations α ↔ γ occurring simultaneously are discussed.
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| http://dx.doi.org/10.3390/ma12172787 | DOI Listing |
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