About the Project
Project Description (max 700 words)
In manufacturing, automotive and aerospace applications, cryogenic treatments are used to improve strength, fatigue and wear resistance of structural and hard wearing engineering alloys. The proposed research will produce experimentally validated computational models of microstructural changes in such alloys at sub-zero and cryogenic temperatures, using cryogenic treatments of selected steels as a case study. Models will be validated using advanced materials characterisation techniques, as well as through mechanical testing.
The kinetics for microstructural change are reduced at cryogenic temperatures and yet, phase transformations and precipitation of secondary phases occurs. The reasons for this must lie in the coupling between deformation, transport mechanisms and thermodynamic stability. It is this coupling that forms the focus of this study.
The project will involve the creation and application of theoretical and numerical models, to the transformation behaviour of select engineering alloy systems. These models will be validated using microstructural characterisation techniques including electron microscopy and X-ray diffraction.
References
T. Slatter and R. Thornton, (2016), Cryogenic Treatment of Engineering Materials, Reference Module in Materials Science and Engineering. ISBN 978-0-12-803581-8, http://dx.doi.org/10.1016/B978-0-12-803581-8.09165-7.
R. Thornton, T. Slatter and R. Lewis, (2014), Effects of deep cryogenic treatment on the wear development of H13A tungsten carbide inserts when machining AISI 1045 steel, Production Engineering, Volume 8, Issue 3, Pages 355-364, ISSN 0944-6524, http://dx.doi.org/10.1007/s11740-013-0518-7.
R. Thornton, T. Slatter and H. Ghadbeigi, (2013), Effects of deep cryogenic treatment on the dry sliding wear performance of ferrous alloys, Wear, Volume 305, Issues 1–2, Pages 177-191, ISSN 0043-1648, http://dx.doi.org/10.1016/j.wear.2013.06.005.
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