Towards Understanding the Development of Grain Boundary Clusters in Austenitic Stainless Steel


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The development of global microstructure characteristics has been compared to the local distribution and extent of Σ3 and Σ3n (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 Σ3n boundary clusters was assessed, and regions with a low density of clusters are indicative of the onset of GBE conversion of microstructure.



Materials Science Forum (Volumes 638-642)

Main Theme:

Edited by:

T. Chandra, N. Wanderka, W. Reimers , M. Ionescu




D.L. Engelberg et al., "Towards Understanding the Development of Grain Boundary Clusters in Austenitic Stainless Steel ", Materials Science Forum, Vols. 638-642, pp. 3206-3211, 2010

Online since:

January 2010




[1] W.E. King and A.J. Schwartz: Scripta Materialia Vol. 38 (1998), p.449.

[2] D.L. Engelberg, F.J. Humphreys and T.J. Marrow: Journal of Microscopy Vol. 230 (2008), p.435.

[3] M. Michiuchi, H. Kokawa, Z.J. Wang, Y.S. Sato and M. Sakai: Acta Materialia Vol. 54 (2006), p.5179.

[4] Q. Li, B.M. Guyot and N.L. Richards: Materials Science and Engineering A Vol. 458 (2007), p.58.

[5] M. Kumar, W.E. King and A.J. Schwartz: Acta Materialia Vol. 48 (2000), p. (2081).

[6] V. Randle: Acta Materialia Vol. 52 (2004), p.4967.

[7] V.Y. Gertsman and C.H. Henager (Jr. ): Interface Science Vol. 11 (2003), p.403.

[8] B.W. Reed, M. Kumar, R.W. Minich and R.E. Rudd: Acta Materialia Vol. 56 (2008), p.3278.

[9] S. Xia, B. Zhou and W. Chen: Journal of Materials Science Vol. 43 (2008), p.2990.

[10] C.A. Schuh, M. Kumar and W.E. King: Acta Materialia Vol. 51 (2003), p.687.

[11] S. Tsurekawa, S. Nakamichi and T. Watanabe: Acta Materialia Vol. 54 (2006), p.3617.

[12] D.L. Engelberg: School of Materials, PhD Thesis, University of Manchester, (2006).

[13] F.J. Humphreys, Manchester Materials Science Centre, The University of Manchester, (2001), http: /www. recrystallization. info.

[14] D.G. Brandon: Acta Metallurgica Vol. 14 (1966), p.1479.

[15] T.J. Marrow, L. Babout, A. Jivkov, P. Wood, D. Engelberg, N. Stevens, P.J. Withers and R.C. Newman: Journal of Nuclear Materials Vol. 352 (2006), p.62.

[16] M. Frary and C.A. Schuh: Acta Materialia Vol. 53 (2005), p.4323.

[17] H. Kokawa, M. Shimada and Y.S. Sato: Journal of the Minerals, Metals and Materials Society Vol. 52 (2000), p.34.