Author:
Ståhlkrantz Adam,Hedström Peter,Sarius Niklas,Borgenstam Annika
Abstract
AbstractThe microstructure of a low alloy medium carbon bainitic steel, austempered in the temperature range 275 °C to 450 °C has been investigated by detailed electron backscatter diffraction and variant pairing analysis. It is observed that the variant pairing tendency has two distinct changes with varying temperature. At low temperature V1-V6 is the most frequent, whereas V1-V2 is the most frequent at intermediate temperature and at the highest temperature, V1-V4 dominates. This is distinct from the literature on low carbon steel where only two dominant variants pairs, related to the common distinction of bainite into lower and upper bainite, are typically reported. The change of the variant pairing in bainite also has many similarities with the change of variant pairing in martensite when its carbon content changes. Another observation is that the morphological orientation of cementite in the bainite has a strong relation with the variant pairing at lower austempering temperatures.
Funder
Royal Institute of Technology
Publisher
Springer Science and Business Media LLC
Subject
Metals and Alloys,Mechanics of Materials,Condensed Matter Physics
Reference49 articles.
1. M. Hillert: Jernkontorets Ann., 1957, vol. 141, pp. 757–89. .
2. A. Borgenstam, M. Hillert, and J. Ågren: Acta Mater., 2009, vol. 57, pp. 3242–52. .
3. A. Borgenstam, P. Hedstroem, M. Hillert, P. Kolmskog, A. Stormvinter, and J. Aagren: Metall. Mater. Trans. A., 2011, vol. 42A, pp. 1558–74. .
4. P. Kolmskog, PhD thesis, Royal Institute of Technology, SWE, 2013.
5. M. Hillert, L. Höglund, and J. Ågren: Metall. Mater. Trans. A., 2004, vol. 35A, pp. 3693–700. .
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