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.
LanguageEnglish
Pages3206-3211
Number of pages6
JournalMaterials Science Forum
Volume638-642
DOIs
Publication statusPublished - 2010

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austenitic stainless steels
Austenitic stainless steel
Grain boundaries
grain boundaries
Annealing
Microstructure
Thermomechanical treatment
Stainless Steel
Processing
microstructure
annealing
Stainless steel
thermomechanical treatment
stainless steels

Keywords

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

Cite this

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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.",
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Towards understanding the development of grain boundary clusters in austenitic stainless steel. / Engelberg, Dirk; Rahimi, Salaheddin; Marrow, James.

In: Materials Science Forum, Vol. 638-642, 2010, p. 3206-3211.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Towards understanding the development of grain boundary clusters in austenitic stainless steel

AU - Engelberg, Dirk

AU - Rahimi, Salaheddin

AU - Marrow, James

PY - 2010

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N2 - 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.

AB - 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.

KW - annealing

KW - stainless steel

KW - clustering

KW - cold rolling

KW - grain boundary engineering

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