4.7 Article

Retention of metastable beta phase in a two-phase quaternary zirconium alloy

期刊

MATERIALS & DESIGN
卷 156, 期 -, 页码 622-630

出版社

ELSEVIER SCI LTD
DOI: 10.1016/j.matdes.2018.07.021

关键词

Phase transformation; Zirconium alloy; Metastable phase; Quenching; Dual-phase

资金

  1. NSERC
  2. Canada / NRCan
  3. Canada Gen-IV project
  4. NSERC/UNENE Industrial Research Chair Program at Queen's University

向作者/读者索取更多资源

This study investigates the retention of greater than equilibrium beta phase in a two-phase zirconium alloy. We provide experimental data exploring two factors that impact the retention of beta phase following heat treatment of a two-phase quaternary zirconium alloy, Zr-3.5Sn-0.8Mo-0.8Nb. Heat treatment temperature and quenching rate are varied to establish a criterion for metastable beta phase retention and determine the excess free energy of the metastable phase as a function of solutionizing temperature. It is possible to retain a microstructure with up to 46 vol% beta phase at room temperature in this alloy, which has a stable room temperature beta phase content of 8 vol%. (C) 2018 Published by Elsevier Ltd.

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