Physical Metallurgy

• development of a new generation of low-manganese steels
• study of defect formation during steel processing using Australia’s only Gleeble thermo-mechanical simulator and high temperature laser-scanning confocal microscope to make observations of phenomena such as phase transitions and oxidation
• delta-ferrite to austenite phase transformation in Fe-C alloys
• phase transformations in steels during thermo-mechanical processing
• application of transmission electron microscopy and three dimensional atom probe tomography to study fine features in steels
• modelling
• strip casting
• weldability of low-manganese steels hydrogen effects in steel
• improved ductility of Al-Zn coatings

Selected Recent Publications

Pereloma, E., Bata, V., Scott, R. & Smith, R. M. (2010). Effect of Cr and Mo on strain ageing behaviour of low carbon steel. Materials Science and EngineeringA: Structural materials: Properties, Microstructures and Processing, 527 (10-11), 2538-2546.

Al Shahrani, A., Schambron, T., Dehghan-Manshadi, A., Williams, J. & Pereloma, E. (2010). Effects of processing parameters on microstructure development in X70 pipeline steel. Materials Science Forum, 654-656, 298-301.

Rian Dippenaar, Continuous Casting of Advanced Steels of Near-Peritectic Composition, Materials Science Forum, Vol. 654 – 656 (2010) pp. 17 – 22

Dippenaar, R. J. (2010). Transverse surface cracks in continuously cast steel slabs, oscillation marks and austenite grain size. Materials Science Forum, Thermec 2009,638-642, 3603-3609.

Dehghan-Manshadi, A. & Dippenaar, R. J. (2010). The behavior of precipitates during hot-deformation of low-manganese, titanium-added pipeline steels. Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science, 41 (13), 3291-3296.

Dehghan-Manshadi, A. & Dippenaar, R. J. (2010). Precipitates behavior during thermomechanical processing of low Mn, Ti added pipeline steels. Materials Science Forum, 654-656, 1291-1294.

Dehghan-Manshadi, A. & Dippenaar, R. J. (2010). Dissolution of precipitates in hot rolled low Mn, Ti added pipeline steels. In Thermec 2009, 2009, Berlin, Germany. Materials Science Forum, Thermec 2009,638-642, 3182-3187.

Hejazi, D., Haq, A. J., Yazdipour, N., Dunne, D. P., Barbaro, F. & Pereloma, E. V. (2010). Role of microstructure in susceptibility of X70 pipeline steel to hydrogen embrittlement. Materials Science Forum, 654-656, 162-165.

Schambron, T., Phillips, A. W., O'Brien, D. M., Burg, J., Pereloma, E., Killmore, C. & Williams, J. (2009). Thermomechanical processing of pipeline steels with a reduced Mn content. ISIJ International, 49 (2), 284-292.

Pereloma, E. (2009). Recent developments in steel research in Australia. Metallofizika i Noveishie Tekhnologii: an international research journal, 31 (2), 191-207.

Carpenter, K. R., Dippenaar, R. J. & Killmore, C. (2009). Hot ductility of Nb- and Ti-bearing microalloyed steels and the inlfuence of thermal history. Metallurgical and Materials Transactions A, 40A (3), 573-580.

Dehghan-Manshadi, A. & Dippenaar, R. J. (2009). The Effect of Ti and N on Hot Deformation and Recrystallization of Low C, Low Mn Steel. AIST Proceedings, AISTech 2009 (pp. 713-719). St Louis, USA: Association for Iron & Steel Technology.

Schambron, T., Phillips, A. W., O'Brien, D. M., Burg, J., Pereloma, E., Killmore, C. C. & Williams, J. A. (2008). Thermochemical processing of pipeline steels with a reduced Mn content. ISIJ International, 49 (2), 284-292.

Phelan, D. J., Reid, M. H. & Dippenaar, R. J. (2008). Kinetics of the peritectic reaction in an Fe-C alloy. Materials Science and Engineering A: Structural Materials Properties Microstructure and Processing, 477 (1-2), 226-232.

Aminorroaya S & Dippenaar R J (2007), TEM characterisation of precipitates in the segregated regions of a low carbon, low manganese, titanium added steel, J. Microscopy, V227, Pt.2, pp. 92 – 97

Dippenaar R J, Moon SC & Szekeres E (2007), Strand surface cracks – the role of abnormally large prior-austenite grains, Iron and Steel Technology, July, pp 1 –11

Dippenaar R J (2007), High temperature phase transitions and mechanical properties in steel of peritectic composition, Materials Science Forum, Vols. 539 – 543, pp. 4243 – 4248

Wilson PR, Chen Z, Killmore CR, Laird SJ, Williams JG (2007), Surface oxidation of low carbon steel strip during batch annealing, ISIJ International, 47, pp 114-121