Abstract
A graded binary titanium-nickel alloy with a compositional gradient, from elemental Ti to Ti–23.2 at. % Ni, has been successfully deposited using laser rapid forming. A metallurgical study of the phase evolution along the compositional gradient showed that a series of phase evolutions α→α+β→α+β+Ti2Ni→β/B2+Ti2Ni have occurred. Phase formation and microstructure evolution along the compositional gradient was analyzed by Scheil–Gulliver and eutectic growth models. In particular, the morphology of the β/B2+Ti2Ni anomalous and coupled eutectic is discussed in detail.
Published Version
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