Dimitry Sediako

Professor

Manufacturing, Mechanical
Other Titles: Ph.D., FCAE, FIMMM, P.Eng.; Director, Powertrain Materials Centre
Office: EME3225
Phone: 250.807.8714
Email: dimitry.sediako@ubc.ca

Graduate student supervisor. Enrollment of new graduate students is currently on hold.


Research Summary

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

Biography

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, and in 2023 he became a Fellow of the Institute of Materials, Minerals and Mining (UK).

Websites

High Performance Powertrain Materials

Degrees

PhD (1987) - Mechanical Engineering / Metallurgical Engineering
Belarussian State Technical University (Belarus) and All-Russia Federal Research Institute of Metallurgical Thermal Engineering (Russia)

BEng & MEng (Honors, Summa Cum Laude) - Industrial Thermal Engineering
Belarussian State Technical University (Belarus)

Research Interests & Projects

PDF (not currently available, Inquiries won’t be answered.)

Postdoctoral Fellow, (The position is currently on hold.). Areas: advanced metallography, hydrogen embrittlement, stress and properties characterization in metal alloys and composites, modelling 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.

Graduate Students 

Areas of Study 

MASc & PhD level (admission is currently on hold.  Inquiries won’t be answered.)

  • 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 modelling of phase and stress evolution in metals casting and welding.
  • Solid state / friction stir welding, microstructure and stress evolution.
  • Advanced fitness-for-service characterization for commercial and novel lightweight alloys and composites.

Selected Publications & Presentations

  1. Kozakevich*, J. Stroh*, D. Sediako, D. Weiss, “Solidification Kinetics of An Al-Ce Alloy with Additions of Ni and Mn”, J. of Metals (invited, impact factor 2.7), Special Issue “Solidification and Casting of Metals and Alloys”, Volume 13, 2023, 13(5), pp. 955-970; https://doi.org/10.3390/met13050955
  2. Sabry*, J. Stroh*, D. Sediako, G. Byczynski, A. Lombardi, A. Payzant, “Stress Characterization for Friction-Stir-Welded Electric Vehicle Battery Trays with Application of Neutron Diffraction”, Journal of Manufacturing Processes, SMEJMP-D-23-00922
  3. Sabry*, J. Stroh*, D. Sediako, “Effects of the Friction Stir Welding Sliding and Sticking Mechanisms on the Microhardness, Texture, and Element Concentration”, Light Metals 2023, The Minerals, Metals & Materials Series. Springer, pp. 365–375
  4. Sabry*, J. Stroh*, D. Sediako, “Characterization of Microstructure and Residual Stress Following the Friction Stir Welding of Dissimilar Aluminum Alloys”, CIRP Journal of Manufacturing Science and Technology, (impact factor 4.1) Volume 41, April 2023, pp. 365-379, https://doi.org/10.1016/j.cirpj.2022.11.021
  5. Sabry*, J. Stroh*, D. Sediako, “Friction Stir Welding of Dissimilar Aluminum Alloys: Characterized through Microstructure, Microhardness, and Thermal Analysis”, Light Metals 2023, The Minerals, Metals & Materials Series, March 2023
  6. Stroh*, D. Sediako, “Elevated Temperature Tensile and Creep Performance of Conditioned T7 319 Aluminum Powertrain Alloy for Next Generation Diesel Engine Blocks”, International Journal of Metalcasting, (impact factor 2.26), IJMC-D-22-00370, January 2023, https://doi.org/10.1007/s40962-022-00949-9
  7. Elsayed*, F. D’Elia*, C. Ravindran, D. Sediako, “Observing the Effect of Grain Refinement on Crystal Growth of Al and Mg Alloys During Solidification Using in-situ Neutron Diffraction”, Metals, (impact factor 2.7) ID: metals-1692220, May 14 2022, 12, Vol. 793. https://doi.org/10.3390/met12050793
  8. Kozakevich*, J. Stroh*, D. Sediako, D. Weiss, A. Loukus, S. Vogel, “Elevated Temperature Creep and Tensile Performance of Extruded Mg-10Ce Alloy”, Journal of Materials Engineering and Performance, Vol. 31, iss.8, Magnesium, published April 27th, 2022, 22 p. (impact factor 2.0) https://doi.org/10.1007/s11665-022-06935-w
  9. Aghaie*, J. Stroh*, D. Sediako, “Long-Term Thermal Stability of Cerium-Modified B319 Aluminum Alloy”, International Journal of Metalcasting, (impact factor 2.2) June 2022. https://doi.org/10.1007/s40962-022-00835-4
  10. Stroh*, D. Sediako, A. Lombardi, G. Byczynski, M. Reid, A. Paradowska, “Evolution of Residual Stress Through the Processing Stages in Manufacturing of Bore-Chilled Sand-Cast Aluminum Engine Blocks with Pressed-in Iron Liners”, The International Journal of Advanced Manufacturing Technology, 120, March 2022, pp 4693–4705 (impact factor 3.4) https://doi.org/10.1007/s00170-022-09059-6
  11. Kozakevich*, J. Stroh*, V. Mallouhi*, D. Sediako, D. Weiss, “Interplay Between Cooling Rate, Microstructure, and Mechanical Properties of an Al–Ce–Ni–Mn Alloy”, Light Metals 2022, The Minerals, Metals & Materials Series, D. Eskin (ed.), pp 83–91. https://doi.org/10.1007/978-3-030-92529-1_11
  12. Stroh*, D. Sediako, D. Weiss, “The Effects of Iron-Bearing Intermetallics on the Fitness-For-Service Performance of a Rare-Earth-Modified A356 Alloy for Next Generation Automotive Powertrains”, J. of Metals (invited), 2021, 11, 788. (impact factor 2.7) Open access:
    • doi: https://doi.org/10.3390/met11050788.
  13. Stroh*, D. Sediako, T. Hanes, K. Anderson, and A. Monroe, “The Effects of Heat Treatment on the Microstructure and Tensile Properties of a HPDC Marine Transmission Gearcase”, J. of Metals (invited), 2021, Vol. 11(3), 517. 17 pages. (impact factor 2.7) Open access: doi: https://doi.org/10.3390/met11030517
  1. Kianfar*, J. Stroh*, N. Bahramian*, D. Sediako, A. Lombardi, G. Byczynski, P. Mayr*, M. Reid, A. Paradowska, “Residual Stress Prediction in the Casting Process of Automotive Powertrain Components. In: Perander L. (eds) Light Metals 2021. The Minerals, Metals & Materials Series. Springer, Cham., pp 858-864. doi: https://doi.org/10.1007/978-3-030-65396-5_113
  1. Stroh*, D. Sediako, D. Weiss, “The Effect of Rare Earth Mischmetal on the High Temperature Tensile Properties of an A356 Aluminum Alloy. In: Perander L. (eds) Light Metals 2021. The Minerals, Metals & Materials Series. Springer, Cham.
  2. Sediako, J. Stroh*, S. Kianfar*, “Residual Stress in Automotive Powertrains: Methods and Analyses”, Materials Research Forum, Trans Tech Publications, Switzerland, 2021, Vol.1016, pp. 1291-1298 https://www.scientific.net/MSF.1016.1291
  3. 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, 2021, Vol. 26, pp. 1-12 (impact factor 2.8).  https://doi.org/10.1016/j.mtcomm.2020.101814
  4. 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 (impact factor 4.7). doi: 10.1016/j.msea.2020.139899
  5. 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), 2021, Volume 15, Issue 1, pp. 129-39
    • doi: 10.1007/s40962-020-00467-6 (online May 2020)
  6. 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, doi: https://doi.org/10.1007/978-3-030-36408-3_21
  1. 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. doi: https://doi.org/ 10.1007/978-3-030-36408-3_24
  2. Valloton*, D. 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)
  3. -A. 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. doi: https://doi.org/10.1080/00084433.2019.1696606
  4. Vandersluis*, C. Ravindran, D. Sediako, A. Elsayed; G. 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)
  5. 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, (impact factor 3.8)
  6. Stroh*, A. Piche*, D. Sediako, A. Lombardi, G. Byczynski, “The Effects of Solidification Cooling Rates on the Mechanical Properties of an Aluminum Inline-6 Engine Block”, Light Metals 2019. The Minerals, Metals & Materials Series. Springer, pp. 505-512
  7. Stroh*, D. Sediako, “Residual Stress Characterization for Marine Gear Cases in As-Cast and T5 Heat Treated Conditions with Application of Neutron Diffraction”, Light Metals 2019, The Minerals, Metals & Materials Series. Springer, pp. 395-399
  8. Vandersluis*; A. Elsayed; F. D’Elia*; P. Emadi*; D. Sediako; C. Ravindran, “Crystalline Phase Solidification Analysis Using In-Situ Neutron Diffraction”, Transactions of the Indian Institute of Metals (TIIM), (2018) 71(11):2777–2781, (impact factor 1.1)
  9. Sediako, J. Stroh*, A. McDougall*, and E. 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
  10. 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)
  11. 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
  12. 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)
  13. 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, (impact factor 4.7). http://dx.doi.org/10.1016/j.msea.2017.05.073
  14. Fudger*, D. Sediako, P. Karandikar, C. Ni, “Residual Stress Analysis within Steel Encapsulated Metal Matrix Composites via Neutron Diffraction””, S. Ikhmayies et al. (eds.), Characterization of Minerals, Metals, and Materials 2017, The Minerals, Metals & Materials Series, pp. 405-413, DOI 10.1007/978-3-319-51382-9_44
  15. Valloton*, D. Herlach*, H. Henein, and D. 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)
  16. 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, (impact factor 3.5)
  17. Lombardi*, E. Vandersluis*, D. Sediako, C. Ravindran, “Neutron Diffraction Analysis of Light Alloys: A Review”, Materials Science Forum, Vol. 879, 2017, pp. 1558-1563
  18. 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)
  19. 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)
    • https://doi.org/10.1016/j.msea.2017.05.026
  20. 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
  21. Sediako, W. Kasprzak, F. Czerwinski, A. Nabawy*, A. 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, DOI: 10.1002/9781119274780.ch23

 

Professional Services/Affiliations/Committees

  • Fellow of the Institute of Materials, Minerals and Mining (UK), inducted 2023
  • CAE Fellow (elected), Canadian Academy of Engineering, inducted June 2014
  • 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, a total of 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

 

Apologies, but no results were found.