Prof. Ahmed Alade Tiamiyu
Affiliations
Associate Professor
Schulich School of Engineering, Department of Mechanical and Manufacturing Engineering
Schulich Research Chair
Department of Mechanical and Manufacturing Engineering
Contact information
Phone number
Office: +1(403) 220-4704
Location
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Joe McFarland
Media Relations and Communications Specialist
Cell: +1.403.671.2710
Email: Joe.Mcfarland@ucalgary.ca
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Funding
Research partners
Background
Educational Background
PhD Mechanical Engineering (Materials Science), University of Saskatchewan, 2019
MSc Mechanical Engineering (Materials Science), University of Saskatchewan, 2015
BSc Metallurgical and Materials Engineering, University of Lagos, 2011
Biography
Dr. Ahmed A. Tiamiyu is a Schulich Research Chair and Associate Professor in the Department of Mechanical and Manufacturing Engineering at the University of Calgary; he joined the department in September 2021 after a postdoctoral research position in the Department of Materials Science and Engineering at the Massachusetts Institute of Technology. Dr. Tiamiyu, in the same year (2021), established the Materials Processing and Performance (MaPP) Lab, which focuses on optimizing traditional materials, designing new advanced materials, and studying their processing-structure-property relationships at multiple length scales to improve performance in extreme service conditions. The interdisciplinary research in Dr. Tiamiyu’s lab spans three main areas: advanced materials design and development; additive manufacturing; and mechanical performance testing under isolated and coupled extreme conditions, with current focus on multifunctional lightweight alloy development, grain boundary decoration and nanograin stabilization, additive manufacturing (solid-state cold spray and fusion-based), corrosion and irradiation damage, and mechanical properties of materials for applications in various sectors, including aerospace, defence, and energy.
Research
Areas of Research
Our research focuses on the design, processing, and performance testing of advanced metallic materials for extreme environments, particularly aerospace, defence, and energy applications. It integrates three interconnected areas:
- Advanced materials design: Developing micro/nanocrystalline multicomponent alloys including high-entropy alloys, steels, and aluminum alloys, with engineered grain boundaries, chemical segregation, and stable microstructures. The central theme also includes understanding how grain-boundary decoration and short-range ordering control strength, thermal stability, corrosion, irradiation tolerance, damage resistance, and catalytic performance.
- Additive manufacturing: Using solid-state and fusion-based additive manufacturing, especially high-pressure cold spray and directed-energy deposition, to translate tailored powders and alloy concepts into coatings, bulk materials, graded structures, and functional components.
- Performance under extreme environments: Establishing processing-microstructure-property relationships under coupled thermal, mechanical, corrosive, irradiative, and high-rate loading conditions relevant to hypersonic vehicles, spacecraft, defence systems, hydrogen infrastructure, and energy technologies.
Participation in university strategic initiatives
Courses
| Course number | Course title | Semester |
|---|---|---|
| ENME 421 | Materials I | Winter 2022, 2023, 2024; Fall 2022, 2023, 2024 |
| ENME 619.82 | Physical Metallurgy | Fall 2023, 2024 |
Awards
- MME Undergraduate Teaching Excellence, Schulich School of Engineering Excellence Award. 2023
- Early Research Excellence, Schulich School of Engineering Excellence Award. 2023
- Experiential and Active Learning Initiatives, Schulich School of Engineering Excellence Award. 2023
- NSERC Post-doctoral fellowship, Natural Sciences and Engineering Research Council of Canada. 2019
- Toyota Automotive Engineering and Safety Scholarship , Toyota . 2019
- NSERC Vanier Canada Graduate Scholarship, Natural Sciences and Engineering Research Council of Canada. 2021
Publications
- Site-specific study of jetting, bonding, and local deformation during high-velocity metallic microparticle impact. A. A. Tiamiyu, Y. Sun, K. A. Nelson, C A. Schuh . Acta Materialia. 159-169. (2021)
- Particle Flattening during Cold Spray: Mechanistic Regimes Revealed by Single Particle Impact Tests. A. A. Tiamiyu and C. A. Schuh . Surface and Coatings Technology. 126386. (2020)
- Corrosion behavior of metastable AISI 321 austenitic stainless steel: Investigating the effect of grain size and prior plastic deformation on its degradation pattern in saline media. A. A. Tiamiyu, U. Eduok, J. A. Szpunar, and A. G. Odeshi . Scientific Reports. 12116. (2019)
- Effects of Grain Refinement on the Quasi-Static Compressive Behavior of AISI 321 Austenitic Stainless Steel: EBSD, TEM, and XRD Studies. A. A. Tiamiyu, T. Vahid, J. A. Szpunar, A. G. Odeshi, and A. K. Khan . International Journal of Plasticity. 79–99. (2018)
- Multiple Strengthening Sources and Adiabatic Shear Banding during High Strain-Rate Deformation of AISI 321 Austenitic Stainless Steel: Effects of Grain Size and Strain Rate. A. A. Tiamiyu, A. G. Odeshi, and J. A. Szpunar . Materials Science and Engineering A. 233–49. (2018)
- Nanotwinning-assisted dynamic recrystallization at high strains and strain rates. Ahmed A. Tiamiyu , Edward L. Pang , Xi Chen, James M. LeBeau , Keith A. Nelson , and Christopher A. Schuh. Nature Materials. (2022)
- Design of Self-Stable Nanocrystalline High-Entropy Alloy. Moses A. Adaan-Nyiak, Intekhab Alam, Gabriel A. Arcuri, and Ahmed A. Tiamiyu. Materials & Design. 112482. (2023)
- Data-Driven Prediction of Stable Phases in High-Entropy Alloys: Leveraging Machine Learning for Alloy Design and Discovery. Iman Peivaste, E. Jossou, and Ahmed A. Tiamiyu. Scientific Reports. 22556. (2023)
- Design and Development of Stable Nanocrystalline High-Entropy Alloy: Coupling Self-Stabilization and Solute Grain Boundary Segregation Effects. Moses A. Adaan-Nyiak, Intekhab Alam, Ericmoore Jossou, S. Hwang, Kim Kisslinger, M. Topsakal, Simerjeet K. Gill, and A. A. Tiamiyu. Small. 2309631. (2024)
In the News
- Four U of S students awarded prestigious Vanier Scholarships. U of S News. (2017)
- Talking outside the tower. EECS Communication Lab + MIT Libraries. (2021)
- Researchers unveil a secret of stronger metals: Study shows what happens when crystalline grains in metals reform at nanometer scales, improving metal properties.. MIT News. (2022)
- UCalgary researcher helps solve secret of strengthening metals. UCalgary News (UToday). (2022)
- Schulich researchers develop new ways to make stronger metals: Novel approaches create stable nanocrystalline materials for widespread industrial use. UCalgary News (UToday). (2024)
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