Towards understanding the development of grain boundary clusters in austenitic stainless steel

Dirk Engelberg, Salaheddin Rahimi, James Marrow

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

The development of global microstructure characteristics has been compared to the local distribution and extent of Σ3 and Σ3 n (1≤ n ≤3) grain boundary clusters as a function of thermo-mechanical processing in Type 304 stainless steel. A cold reduction of 5% produced GBE modified microstructures on annealing at 1050°C, containing almost one order of magnitude longer maximum cluster lengths than the corresponding annealing treatments for a reduction of 15%. Differences in the development of the distributions of cluster length scales were observed between the thermo-mechanical treatments. A re-conversion of the longest cluster obtained after GBE processing was observed with long annealing times. The local distribution of Σ3 n boundary clusters was assessed, and regions with a low density of clusters are indicative of the onset of GBE conversion of microstructure.
Original languageEnglish
Pages (from-to)3206-3211
Number of pages6
JournalMaterials Science Forum
Volume638-642
DOIs
Publication statusPublished - 2010

Keywords

  • annealing
  • stainless steel
  • clustering
  • cold rolling
  • grain boundary engineering

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