Nature Communications (Jan 2020)

Unveiling the Re effect in Ni-based single crystal superalloys

  • Xiaoxiang Wu,
  • Surendra Kumar Makineni,
  • Christian H. Liebscher,
  • Gerhard Dehm,
  • Jaber Rezaei Mianroodi,
  • Pratheek Shanthraj,
  • Bob Svendsen,
  • David Bürger,
  • Gunther Eggeler,
  • Dierk Raabe,
  • Baptiste Gault

DOI
https://doi.org/10.1038/s41467-019-14062-9
Journal volume & issue
Vol. 11, no. 1
pp. 1 – 13

Abstract

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Adding minute amounts of rhenium to Ni-based single crystal superalloys extends their high temperature performance in engines, but the reasons behind that are still unclear. Here, the authors combine high resolution imaging and modelling to show that rhenium enriches and slows down partial dislocations to improve creep performance.