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Manufacturing, MechanicalOther Titles: Mechanical Program Chair, Ph.D., FCAE, P.Eng.; Director, Powertrain Materials Centre
Graduate student supervisor
Stress analysis in metal castings, components, and joints; Solidification, phase evolution and transformation; Lightweight alloy development for automotive and aerospace industries; Phase and structural transformation in metals; Material properties - ferrous and lightweight alloys and metal matrix composites; Ferrous and non-ferrous alloys: casting, heat treatment, and forming technologies; Thermal dynamics, heat transfer in metallurgical engineering.
Courses & Teaching
Industrial manufacturing: processes and technologies; Materials science: metals, specialty alloys, and metal matrix composites; Metallurgy: solidification and thermal processing, phase analysis, stress evolution, process optimization
After receiving PhD in Metallurgical Engineering in 1987, Dr. Sediako career extended over 30 years of R&D in steel, aluminum, and magnesium metallurgy, including 20 years in industry. In his most recent research at the Canadian Nuclear Laboratories, he has been utilizing unique properties of neutrons, allowing direct stress measurements and phase analysis inside metal parts and components. He collaborates extensively with a number of automotive manufacturers, both OEMs and Tier 1 suppliers, enabling new alloys development, stress analysis, and technology optimization for the most challenging applications. A specific focus of his research is stress characterization in automotive, aerospace, and marine powertrain components, as well as in-situ studies of solidification, phase evolution, and high temperature creep in new aluminum and magnesium alloys’ development for the transportation industries. Dr. Sediako is an author of more than 200 articles and a licensed Professional Engineer. In 2014 he was inducted into the Fellowship of the Canadian Academy of Engineering.
PhD (1987) - Mechanical Engineering / Metallurgical Engineering
Belarussian State Technical University (Belarus) and USSR Research Institute of Metallurgical Thermal Engineering (Russia)
MEng (Honors, Summa Cum Laude) - Industrial Thermal Engineering
Belarussian State Technical University (Belarus)
Research Interests & Projects
PDF – Position is currently on hold:
Postdoctoral Fellow, starting in January 2022. Areas: advanced metallography, hydrogen embrittlement, stress and properties characterization in metal alloys and composites, modeling and simulation (FEA), phase and stress evolution in casting and welding, solid state / friction stir welding, PTWA/EJPO plasma coating. Requirements: prior extensive experience in two or more of the listed fields.
Areas of Study
MASc and PhD level
- Thin films and plasma coating technology. PTWA/EJPO processes in the automotive industry, characterization of wear resistance and oil retention.
- Development and characterization of novel high-temperature aluminum and magnesium alloys for automotive and aerospace applications.
- Stress characterization in aluminum automotive and marine powertrain components. Non-destructive stress analysis and stress mitigation for current and next-generation IC engines and transmissions.
- FE modeling of phase and stress evolution in metals casting and welding.
- Solid state / friction stir welding, micro-structure and stress evolution.
- Advanced fitness-for-service characterization for commercial and novel lightweight alloys and composites.
Selected Publications & Presentations
- Stroh*, D. Sediako*, A. Lombardi, G. Byczynski, M. Reid, A. Paradowska, “Residual Stress Evolution of Sand-Cast Aluminum Engine Blocks Manufactured with Pressed-In Iron Liners”, Journal of Materials Processing, submitted
- Kianfar*, J. Stroh*, N. Bahramian*, D. Sediako, A. Lombardi, G. Byczynski, Philipp Mayr*, M. Reid, A. Paradowska, “Residual Stress Prediction in the Casting Process of Automotive Powertrain Components”, Light Metals, 2021
- Stroh*, D. Sediako, D. Weiss, “The Effect of Rare Earth Mischmetal on the High Temperature Tensile Properties of an A356 Aluminum Alloy”, Light Metals 2021,
- Sina Kianfar, E. Aghaie, J. Stroh, D. Sediako, and J. Tjong, “Residual Stress, Microstructure, and Mechanical Properties Analysis of HPDC Aluminum Engine Block with Cast-In Iron Liners”, Materials Today Communications, Accepted Oct. 22, 2020, available online 2 Nov.2020, https://doi.org/10.1016/j.mtcomm.2020.101814 (impact factor 2.8)
- Aghaie; J. Stroh, D. Sediako; A. Rashidi; A. Milani, “Improving the Mechanical Properties of the B319 Aluminum Alloy by Addition of Cerium”, Materials Science & Engineering A, Structural materials : properties, microstructure and processing, 08/2020, Volume 793 DOI:10.1016/j.msea.2020.139899 (impact factor 4.7)
- Stroh*, D. Sediako, D. Weiss, “Development of Cerium-Reinforced Specialty Aluminum Alloy with Application of X-ray and Neutron Diffraction”, International Journal of Metalcasting (467), May 2020, DOI: 10.1007/s40962-020-00467-6, (impact factor 1.2)
- Sediako, J. Stroh*, S. Kianfar*, “Residual Stress in Automotive Powertrains: Methods and Analyses”, Materials Research Forum, Trans Tech Publications, Switzerland, 2021, accepted May 14, 2020
- Stroh*, D. Sediako, G. Byczynski, A. Lombardi, A. Paradowska, “Stress Characterization of Bore-Chilled Sand Cast Aluminum Engine Blocks in As-Cast and T7 Condition with Application of Neutron Diffraction”. In: Tomsett A. (eds) Light Metals 2020. The Minerals, Metals & Materials Series. Springer, Cham., pp. 153-157, https://doi.org/10.1007/978-3-030-36408-3_21
- Stroh*, D. Sediako, D. Weiss, V. Peterson, “In-Situ Neutron Diffraction Solidification Analyses of Rare Earth Reinforced Hypoeutectic and Hypereutectic Aluminum-Silicon Alloys”, In: Tomsett A. (eds) Light Metals 2020. The Minerals, Metals & Materials Series. Springer, Cham., pp. 174-178, https://doi.org/ 10.1007/978-3-030-36408-3_24
- Jonas Valloton*, Dieter Herlach*, H. Henein, D. Sediako, “Scandium effect on undercooling and dendrite morphology of Al-4.5wt% Cu droplets”, Materials and Metallurgical Transactions A, Vol. 50A, December, 2019, pp. 5700 – 5706, (impact factor 2.3)
- Abdoul-Aziz Bogno*, H. Henein, D.G. Ivey, J. Valloton*, D. Sediako, G. Reinhart, M. Gallerneault, “Effects of Scandium on Rapid Solidified Hypo-Eutectic Aluminum Copper”, Canadian Metallurgical Quarterly, CMQ1375R1, Nov., 2019, pp 101-115 (impact factor 1.0) https://doi.org/10.1080/00084433.2019.1696606
- Eli Vandersluis*, Comondore Ravindran; Dimitry Sediako; Abdallah Elsayed; Glenn Byczynski “Strontium-Modification in the Stepwise Solidification of A319 Al Alloy: An In-Situ Neutron Diffraction Study”, Journal of Alloys and Compounds, Vol. 792, April 2019, pp. 240-249, (impact factor 3.8)
- Lombardi, D. Sediako, C. Ravindran, and M. Barati, “Analysis of Precipitation, Dissolution and Incipient Melting of Al2Cu in B206 Al Alloy using In-situ Neutron Diffraction”, Journal of Alloys and Compounds 784 (2019) pp. 1017-1025, doi: https://doi.org/10.1016/j.jallcom.2019.01.104. (impact factor 3.8)
- Abdallah Elsayed, Dimitry Sediako and Comondore Ravindran, “In-situ neutron diffraction of grain refinement in Mg-Zn and Mg-Zn-Zr alloys”, in submission (paper completed)
- Eli Vandersluis*; Abdallah Elsayed; Francesco D’Elia; Payam Emadi*; Dimitry Sediako; Comondore Ravindran, “Crystalline Phase Solidification Analysis Using In-Situ Neutron Diffraction”, Transactions of the Indian Institute of Metals (TIIM), (2018) 71(11):2777–2781, https://doi.org/10.1007/s12666-018-1418-5, (impact factor 1.1)
- Dimitry Sediako, Joshua Stroh*, Alexandra McDougall*, and Ermia Aghaie*, ”Residual Stress Analysis of A362 Aluminum Alloy Gear Case Using Neutron Diffraction”, Materials Science Forum Online: 2018-12-26, ISSN: 1662-9752, Vol. 941, pp 1288-1294, doi:10.4028/www.scientific.net/MSF.941.1288, © 2018 Trans Tech Publications, Switzerland (impact factor 0.4)
- Vandersluis*, D. Sediako, P. Emadi*, C. Ravindran, A. Elsayed, G. Byczynski, “Determination of Temperature-Dependent Crystallographic Parameters of Al-Si Alloys Using In-Situ Neutron Diffraction”, Journal of Applied Crystallography, 2018, Vol. 51, pp. 1141-1150 (impact factor 3.5)
- Stroh*, D. Sediako, “Microstructure and In-Situ Solidification Analysis of Al-Ce-Mg Alloy”, Physics in Canada, 2018, (invited), Vol. 74, no. 1-2, pp. 41-44
- Vandersluis*, D. Sediako, C. Ravindran, A. Elsayed, G. Byczynski, “Analysis of Eutectic Silicon Modification During Solidification of Al-6Si Using In-Situ Neutron Diffraction”, Journal of Alloys and Compounds, 736 (2018), pp. 172-180. (impact factor 3.8)
- Fudger*, D. Sediako, P. Karandikar, C. Ni, “Residual Stress Induced Mechanical Property Enhancement in Steel Encapsulated Light Metal Matrix Composites”, Material Science and Engineering A, vol. 699, pp. 10-17, 2017, available online May 20, 2017, http://dx.doi.org/10.1016/j.msea.2017.05.073 (impact factor 3.4)
- Jonas Valloton*, Dieter Herlach*, Hani Henein, and Dimitry Sediako, “Microstructural quantification of rapidly solidified undercooled D2 tool steel”, Materials and Metallurgical Transactions A, October 2017, Volume 48, Issue 10, pp 4735–4743 (impact factor 2.0)
- Lombardi*, D. Sediako, A. Machin, C. Ravindran, R. MacKay, “Effect of solution heat treatment on residual stress in Al alloy engine blocks using neutron diffraction”, Materials Science & Engineering A, (2017), 0921-5093/ © 2016 Published by Elsevier Ltd. Volume 697, 14 June 2017, pp. 238–247 (impact factor 3.5)
- Smith*, J.-B. Levesque*, L. Bichler, D. Sediako, J. Gholipour, P. Wanjara, “Residual stress analysis in linear friction welded in-service Inconel 718 superalloy via neutron diffraction and contour method approaches”, Materials Science & Engineering A, , Vol. 691, 2017, pp. 168–179 Available online 10 March 2017, http://dx.doi.org/10.1016/j.msea.2017.03.038 (impact factor 3.5)
- Lombardi*, E. Vandersluis*, D. Sediako, C. Ravindran, “Neutron Diffraction Analysis of Light Alloys: A Review”, Materials Science Forum, Vol. 879, 2017, pp. 1558-1563 (impact factor 0.4)
- Lombardi, A. Elsayed, D. Sediako, C. Ravindran, “Analysis of the Solidification Characteristics of a 319 Type Al Alloy using In-situ Neutron Diffraction”, Journal of Alloys and Compounds, Vol. 695 (2017), pp. 2628-2636 (impact factor 3.8)
- Smith*, L. Bichler, D. Sediako, “Measurement of Residual Stresses in Linear Friction Welded In-Service Inconel 718 Superalloy”, Materials Science Forum, ISSN: 1662-9752, Vol. 879, pp 1800-1806, doi:10.4028/www.scientific.net/MSF.879.1800, Online: 2016-11-15 (impact factor 0.4)
- Dimitry G. Sediako, Wojciech Kasprzak, Frank Czerwinski, Ahmed M. Nabawy*, Amir R. Farkoosh*, “High Temperature Creep Evolution In Al-Si Alloys Developed for Automotive Powertrain Applications A Neutron In-Situ Study on hkl-Plane Creep Response”, LIGHT METALS 2016, pp. 131–136 (impact factor 1.0)
- DOI: 10.1002/9781119274780.ch23
- Huang*, J. Moraes, D. Sediako, J. Jordon , H. Guo, X. Su, “Finite Element and Residual Stress Analysis of Self-piercing Riveting in Dissimilar Metal Sheets”, Journal of Manufacturing Science and Engineering, online August 15, 2016, February 2017, Vol. 139 / pp. 021007 1-11; doi:10.1115/1.4034437 (impact factor 3.5)
- Ahmad*, D. Sediako, A. Lombardi, C. Ravindran, R. MacKay, A.M. Nabawy, “Assessment of Residual Stress in T5 treated 319 Al Alloy Engine Blocks Using Neutron Diffraction”, SAE International Journal of Materials and Manufacturing, SAE Technical Paper 2016-01-0353, 2016, doi:10.4271/2016-01-0353. (impact factor 2.7)
- Czerwinski, W. Kasprzak, D. Sediako, D. Emadi*, S. K. Shaha, J. Friedman, and D.L. Chen, “High Temperature Aluminum Alloys for Automotive Powertrain”, Advanced Materials and Processes, March, 2016, pp. 16-20
- Member (elected), Science Council, The Canadian Institute for Neutron Scattering (CINS). 2016/10 – current
The Canadian Institute for Neutron Scattering (CINS) promotes scientific research using neutron beams. The members include individuals and institutions, totaled 400 individuals from over 40 Canadian institutions from 7 provinces, and over 60 university departments from 32 universities. The membership also includes 150 individuals from over 80 foreign institutions from 19 countries.
- Member (elected), Light Metals Committee, Metallurgical Society (MetSoc) of Canadian Institute of Mining, Metallurgy and Petroleum (CIM). 2012/10 – current
- Fellow (elected), Canadian Academy of Engineering, inducted June 2014