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Type: Artigo
Title: Morphological evolution of transformation products and eutectoid transformation(s) in a hyper-eutectoid Ti-12 at% Cu alloy
Author: Donthula, Harish
Vishwanadh, B.
Alam, T.
Borkar, T.
Contieri, R. J.
Caram, R.
Banerjee, R.
Tewari, R.
Dey, G. K.
Banerjee, S.
Abstract: Evidences of both sluggish eutectoid and active eutectoid (not suppressible under rapid cooling) transformations have been found for the first time in a single hyper-eutectoid Ti-Cu alloy. Both of these types of eutectoid reactions have been investigated in detail, at different length scales, by coupling scanning electron microscopy (SEM),transmission electron microscopy (TEM) and atom probe tomography (APT). The unique three phase crystallographic relationship between the parent beta (bcc) and the two product phases, alpha (hcp) and Ti2Cu, has been established. The extent of partitioning of the solute (Cu) between the two product phases has been determined by APT and is rationalised in terms of thermodynamic considerations. Based on the observed lattice site correspondence and the extent of solute partitioning, a possible mechanism of active eutectoid transformation is proposed
Subject: Ligas de cobre-titânio
Country: Reino Unido
Editor: Elsevier
Rights: Fechado
Identifier DOI: 10.1016/j.actamat.2019.01.044
Date Issue: 2019
Appears in Collections:FCA - Artigos e Outros Documentos
FEM - Artigos e Outros Documentos

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