Communication: Effect of Al on the NiAl-type B2 precipitates in ferritic superalloys

Shenyan Huang, Gautam Ghosh, Xin Li, Jan Ilavsky, Zhenke Teng, Peter K. Liaw*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

7 Scopus citations

Abstract

Ultra-small-angle X-ray scattering (USAXS) is employed to quantify the average size, interparticle spacing, and volume fraction of the primary B2 precipitates in Fe-based superalloys with varying Al concentration. The results are analyzed with a model incorporating polydispersity and interference effects and verified by transmission electron microscopy (TEM) characterizations. As the Al amount increases from 4 to 10 mass pct, there is an approximately 40 pct decrease in the average interparticle spacing and ∼30 pct reduction in the average particle diameter.

Original languageEnglish (US)
Pages (from-to)3423-3427
Number of pages5
JournalMetallurgical and Materials Transactions A: Physical Metallurgy and Materials Science
Volume43
Issue number10
DOIs
StatePublished - Oct 1 2012

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanics of Materials
  • Metals and Alloys

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