Dr. Mohamed Ahmed Afifi

Assistant Professor

Faculty Building

UB2

Office Number

S12-C

Bio

Biography

Dr. Mohamed A. Afifi is an Assistant Professor in the Mechanical Engineering programme at Nile University, Egypt. He earned his Ph.D. in Materials Science and Engineering from the Beijing Institute of Technology (2019), and subsequently held a Research Fellowship at Brunel University London (2019–2022), where he had a strategic collaboration with Constellium SE on high-strength automotive aluminium alloys. His research programme addresses the thermomechanical processing and severe plastic deformation of aluminium alloys, the additive manufacturing of metallic materials, and the design of advanced alloys such as high-entropy alloys and metal matrix composites, increasingly guided by machine-learning and CALPHAD-based approaches. He serves as a reviewer for top journals like Acta Materialia and Scripta Materialia, and is a member of the ASME Boiler and Pressure Vessel Code Committee (Section II). He is a recipient of Nile University's Prof. Hazem Ezzat Award for Outstanding Contribution to Research (2024/2025).

Recent Publications

This study presents a comprehensive examination of the Al-Zn-Mg-Cu alloy, focusing on the effects of high strain rate dynamic compression and heat treatment on its performance. The research aimed to understand the underlying microstructural mechanisms contributing to the enhanced mechanical properties of the alloy, which is critical for applications in aerospace and automotive industries. High

High-Entropy Alloys: Design, Manufacturing, and Emerging Applications presents cutting-edge advances in the field of these materials, covering their mechanics, methods of manufacturing, and applications, all while emphasizing the link between their structure/microstructure and functional properties. The book starts with a section on the fundamentals of high-entropy alloys (HEAs), with chapters

Despite the fact that numerous equiatomic and nonequiatomic high-entropy alloys (HEAs) have been observed to form a single solid solution (SS), it has also been established that several intermediate phases can emerge, some of which exhibit the structural characteristics of intermetallic compounds (ICs) such as Laves, B2, sigma, L12, and amorphous phases. This phenomenon has been extensively

High-entropy alloys (HEAs) are a relatively new class of materials that have been attracting significant attention in material science and engineering research. This chapter provides an introductory discourse on the microstructural characterization and properties of these fascinating materials. The term “HEAs” refers to an innovative concept of metallic materials composed of multiple principal

High-entropy alloys (HEAs) have emerged as a promising class of materials that exhibit exceptional mechanical properties, corrosion resistance, and high-temperature stability. They have become a significant area of research in the materials science domain owing to their potential for a wide range of applications. This chapter provides an overview of the concept, phase selection rules, the

The evolution of alloy-based materials, transitioning from simple binary alloy systems to more intricate compositions, has played a pivotal role in facilitating the advancement of innovative technologies and, in turn, driving social progress. This transformative journey has been accompanied by a significant enhancement in humanity’s capacity to create novel materials. High-entropy alloys (HEAs)

The study investigates the effects of tensile stretching on the microstructural evolution and mechanical properties of a high Zn-content Al-Zn-Mg-Cu alloy, emphasizing dislocation dynamics and precipitate behavior. The alloy, with a composition of Al-9.01 Zn-2.45 Cu-2.25 Mg-0.13 Zr (wt.%), prepared through casting subjected to peak-aged (T6) at 743 K for 1 h followed by 393 K for 24 h. Tensile

Research Tracks

Thermomechanical Processing of Alloys.
Characterization of Metallic Materials.
Development of Lightweight, High-Strength Metallic Materials
Material Behaviour under Severe Deformation.

Grants

Projects

Research Project

Introducing Strain Rate as a Manufacturing Parameter

Objective/Contributions: To improve the strength of the 7xxx Aluminum alloys for automotive applications. To provide a fundamental understanding of the strengthening mechanisms of Aluminum alloys and to understand Precipitates-dislocation interaction after the deformation process under different strain rates. To bridge the gap between fundamental research and industrial applications. Outcome

Research Project

Advanced Meta Material with Different Poisson’s Ratio

Objective/Contributions: Finite element analysis using Ansys or MATLAB with different Meta Material structures. Apply additive manufacturing techniques to produce the newly designed material. Apply manufactured material in real-life applications like Robotic arm materials.

Research Project

High-Entropy Alloy Development

Abstract We reported the creation of novel high-entropy alloys, characterized by its lightweight nature and good mechanical properties, this is through compositional design and thermomechanical treatment marking a significant advancement for the automotive and aerospace industries. Partners University of Science and Technology Beijing, Oak Rideg National Laboratories

Research Project

Developing high strength Al-Zn-Mg alloys by thermomechanical treatments

Abstract For the first time, the formation and impact of (Al, Zn)3Zr precipitates in Al-Zn-Mg-Cu alloys post-heat treatment was detailed, offering new insights into mechanical property enhancement through these discoveries. In addition, research introduces grain boundary deposition engineering as a novel method to develop aluminium alloys with specific precipitate types and mechanical properties