Competing martensitic, bainitic, and pearlitic transformations in a hypoeutectoid Ti-5Cu alloy

A. Devaraj, S. Nag, B. C. Muddle, R. Banerjee

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This article discusses the competing mechanisms of martensite formation vs eutectoid decomposition via pearlitic or bainitic mechanisms during continuous cooling of a Ti-5 wt pct Cu hypoeutectoid alloy, which falls under the category of active eutectoid systems. Faster cooling rates result in a mixed microstructure of nanoscale bainite consisting of a far-from-equilibrium Ti 2Cu phase and martensitic alpha plates, as determined from three-dimensional atom probe (3DAP) coupled with energy-filtered transmission electron microscopy (EFTEM). Slower cooling resulted in near-equilibrium eutectoid-based microstructures.

Original languageEnglish
Pages (from-to)1139-1143
Number of pages5
JournalMetallurgical and Materials Transactions A: Physical Metallurgy and Materials Science
Issue number5
Publication statusPublished - May 2011

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