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13 Result(s)

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  1. No Access

    Chapter and Conference Paper

    A 3D Multiple-Slip Crystal-Plasticity Model for Precipitate Hardening in Additively Manufactured High Strength Steels

    (AM) revolutionized the manufacturing of complex geometry products, especially in medical and aerospace fields. High-strength precipitate hardened (PH) stainless steels provide unique properties in term of st...

    Moustafa M. AbdelHamid, Tarek M. Hatem in TMS 2022 151st Annual Meeting & Exhibition… (2022)

  2. No Access

    Chapter and Conference Paper

    Iron-Ore Reduction Using Green Hydrogen: A Study for Recycling Wastes in Egyptian Steel Industry

    A new prospective in using pure hydrogen to reduce waste iron ores in a two-stage fluidized bed reactor is presented, modeled, and analyzed. The main advantage of applying this route to the steel industry ...

    Abdelrahman A. Abouseada, Tarek M. Hatem in REWAS 2022: Develo** Tomorrow’s Technica… (2022)

  3. No Access

    Chapter and Conference Paper

    Multi-Physics Modelling of Additively Manufactured Cellular Structures Using Selective Laser Melting

    Cellular structures are characterized by the large percentage of porosity and therefore large surface area. Therefore, they are extensively used as catalysts, filters, and biological interfaces. Besides, they ...

    Mahmoud A. Elsadek, Tarek M. Hatem in TMS 2022 151st Annual Meeting & Exhibition… (2022)

  4. No Access

    Chapter and Conference Paper

    Numerical Study of Intrinsic Stresses in Perovskite-on-Si Solar Cells with Intermetallic Bonding

    semiconductors provide a suitable material candidate to fabricate optoelectronic devices such due to its low deposition cost and . On the other wafers provide a stable and cost-effective technology for e...

    Seif Tarek, Tarek M. Hatem in TMS 2022 151st Annual Meeting & Exhibition… (2022)

  5. No Access

    Chapter and Conference Paper

    Multi-scale Modeling of Hydrogen Embrittlement in High-Strength Steels

    of high-strength steels are greatly influenced by hydrogen residing in the metal causing a well-known phenomenon of (HE). Hydrogen atoms enter the of high-strength steels reaching different such as ,...

    Tarek M. Hatem in TMS 2020 149th Annual Meeting & Exhibition Supplemental Proceedings (2020)

  6. No Access

    Chapter and Conference Paper

    Dislocation-Based Thermodynamic Models of V-Pits Formation and Strain Relaxation in InGaN/GaN Epilayers on Si Substrates

    The strain relaxation mechanism in III-N materials is occurred through the motion of that generated at III-N/Si as a result of large mismatch in lattice and thermal expansion coefficients. As a result of t...

    Khaled H. Khafagy, Tarek M. Hatem… in TMS 2020 149th Annual Meeting & Exhibition… (2020)

  7. No Access

    Article

    Modelling of III-Nitride Epitaxial Layers Grown on Silicon Substrates with Low Dislocation-Densities

    Large lattice and thermal expansion coefficients mismatches between III-Nitride (III N) epitaxial layers and their substrates inevitably generate defects on the interfaces. Such defects as dislocations affect the...

    Khaled H. Khafagy, Tarek M. Hatem, Salah M. Bedair in MRS Advances (2019)

  8. No Access

    Article

    Atomistic Simulations of Carbon and Hydrogen Diffusion and Segregation in Alfa-Iron Deviant CSL Grain Boundaries

    Polycrystalline materials’ mechanical properties and failure modes depend on many factors that include diffusion and segregation of different alloying elements and solutes as well as the structure of its grain...

    Mohamed A. Hendy, Tarek M. Hatem, Jaafar A. El-Awady in MRS Advances (2018)

  9. No Access

    Article

    Impact of angular deviation from coincidence site lattice grain boundaries on hydrogen segregation and diffusion in α-iron

    Coincidence site lattice (CSL) grain boundaries (GBs) are believed to be low-energy, resistant to intergranular fracture, as well as to hydrogen embrittlement. Nevertheless, the behavior of CSL-GBs are general...

    Mohamed H. Hamza, Mohamed A. Hendy, Tarek M. Hatem… in MRS Communications (2018)

  10. No Access

    Chapter and Conference Paper

    Dislocation-Based Finite Element Modelling of Hydrogen Embrittlement in Steel Alloys

    Mechanical properties of many metals are greatly influenced by hydrogen solutes causing a well-known phenomenon of Hydrogen Embrittlement (HE). Hydrogen atoms affect the dislocation core, materials cohesion, a...

    Amir Abdelmawla, Tarek M. Hatem… in TMS 2018 147th Annual Meeting & Exhibition… (2018)

  11. No Access

    Chapter and Conference Paper

    Atomistic Simulations of Carbon Diffusion and Segregation in α-Iron Grain Boundaries

    Polycrystalline materials’ mechanical properties and failure modes depend on many factors that include segregation of different alloying elements as well as its grain boundaries (GBs) structure. Understanding ...

    Mohamed Hendy, Tarek M. Hatem… in TMS 2018 147th Annual Meeting & Exhibition… (2018)

  12. No Access

    Chapter and Conference Paper

    Model-Based Damage Detection in Piezoelectric Fiber Based Composites

    Piezoelectric Fiber-based Composites (PFCs) have significant potential as smart materials given their superior mechanical properties over piezoelectric wafers. Therefore, reliable models are needed to accurate...

    Khalid M. Shalan, Mohamed E. AbdelMeguid… in Metal-Matrix Composites Innovations, Advan… (2018)

  13. No Access

    Chapter and Conference Paper

    A Multi-Scale Based Model for Composite Materials with Embedded PZT Filaments for Energy Harvesting

    Ambient vibrations are major source of wasted energy, exploiting properly such vibration can be converted to valuable energy and harvested to power up devices, i.e. electronic devices. Accordingly, energy harv...

    Ahmed E. El-Etriby, Mohamed E. Abdel-Meguid… in Proceedings of the TMS Middle East — Medit… (2016)