Competing Martensitic,Bainitic, and Pearlitic Transformations in a Hypoeutectoid Ti-5Cu Alloy |
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| Authors: | A Devaraj S Nag B C Muddle R Banerjee |
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| Affiliation: | (1) Center for Advanced Research and Technology and Department of Materials Science and Engineering, University of North Texas, Denton, TX 76203-5017, USA;(2) ARC Centre of Excellence for Design of Light Metals, Monash University, Clayton, Victoria, 3800, Australia;; |
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| Abstract: | 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 Ti2Cu 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. |
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