On the Deformation of Dendrites During Directional Solidification of a Nickel-Based Superalloy

Research output: Contribution to journalArticlepeer-review

Authors

  • J. W. Aveson
  • G. Reinhart
  • C. J.L. Goddard
  • H. Nguyen-Thi
  • N. Mangelinck-Noël
  • A. Tandjaoui
  • J. R. Davenport
  • F. di Gioacchino
  • T. A. Lafford
  • N. D’Souza
  • B. Billia
  • H. J. Stone

Colleges, School and Institutes

External organisations

  • University of Cambridge
  • Aix Marseille Université & CNRS
  • Ecole Centrale de Lille
  • Colorado School of Mines
  • European Synchrotron Radiation Facility
  • Rolls Royce PLC

Abstract

Synchrotron X-ray imaging has been used to examine in situ the deformation of dendrites that takes place during the solidification of a nickel-based superalloy. By combining absorption and diffraction contrast imaging, deformation events could be classified by their localization and permanence. In particular, a deformation mechanism arising from thermal contraction in a temperature gradient was elucidated through digital image correlation. It was concluded that this mechanism may explain the small misorientations typically observed in single crystal castings.

Details

Original languageEnglish
Pages (from-to)5234-5241
Number of pages8
JournalMetallurgical and Materials Transactions A: Physical Metallurgy and Materials Science
Volume50
Issue number11
Publication statusPublished - 1 Nov 2019