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An Available Technique for Preparation of New Cast MnCuNiFeZnAl Alloy with Superior Damping Capacity and High Service Temperature
Published on: September 23, 2018
A New Mechanism of Dynamic Phase Transformations in An Isothermal Forged Beta-Gamma Intermetallic Alloy
Zhengang Zhang1, Shoujiang Qu2, Guorong Cui3
1School of Materials Science and Engineering, Tongji University, Shanghai 201804, China.
Abstract:
A new mechanism of dynamic phase transformations of α2 ↔ 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 → α2, while new γ lamellae are precipitated in the interior of equiaxed grains of α2 phase through a phase transformation of α2 → γ. The reasons for the presence of these two inverse phase transformations α2 ↔ γ occurring simultaneously are discussed.
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