MOUSSA, M. E., S. El-hadad, and W. Khalifa‏, "Strengthening Effect of Y 2 O 3 on AZ92 Magnesium Alloy Using Stir Casting Process‏", International Journal of Metalcasting, vol. 15, issue 3, pp. 818-828, 2021.
El-hadad, S., M. Ghaith, A. Yassin, M. Kamal‏, and W. Khalifa, "Optimizing the Surface Treatment Processes to Enhance the Bioactivity of Ti–6Al–7Nb Alloy", Transactions of the Indian Institute of Metals 73 ‏, vol. 73, issue 11, pp. 2727-2738, 2020.
Abdel-Salama, M., S. El-Hadad, and W. Khalifa, "Effects of microstructure and alloy composition on hydroxyapatite precipitation on alkaline treated α/β titanium alloys", Materials Science & Engineering C, vol. 104, issue 7, pp. 109974, 2019. msechap.pdf
MOUSSA, M. E., E. L. - H. S. ADAD, and W. Khalifa, "Influence of chemical modification by Y2O3 on eutectic Si characteristics and tensile properties of A356 alloy", Trans. Nonferrous Met. Soc. China, vol. 29, issue 3, pp. 1365−1374, 2019. trans._nonferrous_met._soc._china.pdf
El-Hadad, S., M. Ibrahim, M. Mourad, and W. Khalifa, "Ultrasonic Detection of Microstructure Features in Ti-Alloyed Ductile Iron", Trans Indian Inst Met, vol. 72, issue 9, pp. 2349–2358, 2019. ultrasonic_detectindian.pdf
Khalifa, W., and S. El-Hadad, "ULTRASONICATION EFFECTS ON THE MICROSTRUCTURE CHARACTERISTICS OF THE A380 DIE CAST ALLOY", International Journal of Metalcasting, vol. 13, issue 4, pp. 865-879, 2019. ultrasonicationijmc.pdf
El-hadad, S., M. Nady, W. Khalifa, and A. Shash, "Influence of heat treatment conditions on the mechanical properties of Ti–6Al–4V alloy", Canadian Metallurgical Quarterly , vol. 57, issue 2, pp. 186-193, 2018.
Abdel-salam, M., W. Khalifa, and S. El-Hadad, "Hydroxyapatite Precipitation on Ti-6Al-4V and Ti-6Al-7Nb Alloys", Ceramic Transactions: The American Ceramic Society - Wiley, pp. 153-168, 2018.
Fityan, A., S. El-Hadad, and W. Khalifa, "MICROSTRUCTURE AND MECHANICAL PROPERTIES OF HEAT TREATED Ti-6Al-7Nb ALLOY‏", Ceramic Trasnactions, 261: The American Ceramic Society - Wiley, pp. 169-178, 2018.
Abbas, A., A. Seif, I. Elmahallawi, and W. Khalifa, "Microstructure and Hardness of Subzero Quenched and Heat Treated Ti-6Al-4V Alloy‏", Proceedings of the 3rd Pan American Materials Congress, Los Angelos, TMS, pp. 379-391, 2017.