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Transactions of the Indian Institute of Metals

, Volume 71, Issue 11, pp 2777–2781 | Cite as

Crystalline-Phase Solidification Analysis Using In Situ Neutron Diffraction

  • Eli Vandersluis
  • Abdallah Elsayed
  • Francesco D’Elia
  • Payam Emadi
  • Dimitry Sediako
  • Comondore Ravindran
Technical Paper
  • 36 Downloads

Abstract

In situ neutron diffraction was utilized to examine the solidification behavior of aluminum and magnesium alloys for further understanding of solidification, hot tearing, and grain refinement. The experiments consisted of melting samples and allowing them to cool while being irradiated by neutrons. During solidification, solid phases enabled diffraction of neutrons. The diffraction profiles were collected at each temperature step and were used to interpret the growth of individual planes and phases. In situ neutron diffraction enabled determination of fraction solid curves for individual planes and phases, which was not possible with traditional thermal analysis and computational techniques. This paper outlines the method of generation of fraction solid curves from neutron diffraction intensity data, including a technique to account for the effects of the Debye–Waller factor. This method was successful in revealing detailed insights into crystalline solidification. It showed promise in quantifying many other phenomena beyond those discussed.

Keywords

Neutron diffraction Phase analysis Fraction solid Solidification Characterization Crystalline materials 

Notes

Acknowledgements

The authors acknowledge the financial support of the Natural Sciences and Research Council of Canada (NSERC). The authors thank the Canadian Nuclear Laboratories staff for support of the in situ neutron diffraction experiments. As well, the authors are thankful to Alan Machin, Dr. Anthony Lombardi, and the members of the Centre for Near-net-shaped Processing of Materials (CNPM) at Ryerson University for assistance.

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Copyright information

© The Indian Institute of Metals - IIM 2018

Authors and Affiliations

  1. 1.Centre for Near-net-shape Processing of MaterialsRyerson UniversityTorontoCanada
  2. 2.University of GuelphGuelphCanada
  3. 3.Meotec GmbH & Co. KGAachenGermany
  4. 4.School of EngineeringUniversity of British Columbia - OkanaganKelownaCanada

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