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

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Engelberg, Dirk and Rahimi, Salaheddin and Marrow, James (2010) Towards understanding the development of grain boundary clusters in austenitic stainless steel. Materials Science Forum, 638-642. pp. 3206-3211. ISSN 1662-9760 (https://doi.org/10.4028/www.scientific.net/MSF.638...)

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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.

ORCID iDs

Engelberg, Dirk, Rahimi, Salaheddin ORCID logoORCID: https://orcid.org/0000-0001-6461-988X and Marrow, James;
CORE (COnnecting REpositories)