Publications

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Zaki, A., S. El-hadad, and KHALIFA, A. M., "Surface modification effects on microstructure and mechanical properties of bio-titanium alloys", Materials Science Forum, vol. 909, issue -, Tokyo Japan, Trans Tech Publications, Switzerland, pp. 199-204, 2017.
zaki, A., S. El-Hadad, and W. Khalifa, "Assessment of Tribological Properties of Cast and Forged Ti-6Al-7Nb and Ti-6Al-4V Alloys for Dental Applications", TMS 145 Annual Meeting & Exhibition: Supplemental Proceedings, Nashville, USA, TMS, pp. 693–700, 2016.
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and W. Khalifa, F. Samuel, G. J., "Nucleation of Solid Aluminum on Inclusion Particles Injected into Al-Si-Fe Alloys", Metallurgical and Materials Transactions A, vol. 35A, pp. 3233-3250, 2004.
W. Khalifa, A. D. M. M., Y. Tsunekawa, and M. Okumiya, "Effect of Ultrasonic Treatment on Fe-intermetallic Phases in ADC12 Al-Si Die Cast Alloy", Journal of Materials Processing Technology, pp. 2178–2187, 2010.
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Tash, M., W. Khalifa, and E. H. A., "Effect of Metallurgical Differences between 356 and 384 Alloys on Their Mechanical Properties", Proceedings of The 9th Cairo University International Conference on Mechanical Design and Production (MDP-9), January 8-10, (2008), , , Cairo, Egypt, pp. pp. 992-1004, 2008.
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S. El-Hadad, K. W., S. F. H. A.M. Samuel, and V. S. and H.D. Doty, "Effect of Bi and Ca Additions on the Solidification Thermal Parameters of Sr-modified 319 Alloys", AFS Transactions, vol. 113, pp. 5-177, 2005.
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Okumiya, M., M. Yoshida, Y. Tsunekawa, and W. Khalifa, "Effects of the Process Parameters in Barrel Nitriding on Surface Roughness of Aluminum Nitride Layer and Formation of Deposited Layer", AES-ATEMA’ 2010, Fifth International Conference on Advances and Trends in Engineering Materials and their Applications, Monreal & Quebec City, Canada, June 27 – July 3, 2010.
Okumiya, M., M. Yoshida, R. Ichiki, K. W. C. Tekmen, and T. K. Y. Tsunekawa, "Surface Modification of Aluminum Using a Combined Technique of Barrel Nitriding and Plasma Nitriding", journal of Plasma Process and Polymers, vol. 6, pp. S287–S290, 2009.
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Nabil, M., and W. Khalifa, Materials Selection for Drainage-Water Pumps, , Cairo, Egypt, Drainage Research Center – The Ministry of Water Recourses and Irrigation, pp. 1-35, June 2006.
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Moustafa, T., W. Khalifa, R. M. El-Koussy, and N. A. El-Reheem, "Optimizing theWelding Parameters of Reinforcing Steel Bars", Arab J Sci Eng, vol. 41, issue 5, pp. 1699–1711, 2016.
Moustafa, T., W. Khalifa, R. El-Koussy, and A. N. El-Reheem, "Effect of Metallurgical Factors on Welding of Reinforcing Steel Bars", MONTREAL’2015 AES-ATEMA 22nd International Conference “Advances and Trends in Engineering Materials and their Applications, Montreal, Canada, June 15-19, 2015.
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.
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
M.R. El Koussy, E. M. I. S., A. D. M. M. W. Khalifa, and M. Bueckins, "Effects of Thermal Aging on Microstructure and Mechanical Properties of Duplex Stainless Steel Weldments", Materials Science and Technology, vol. 20, issue 3, pp. 375-381, 2004.
M. Yoshida, O. M., K. W. R. Ichiki, and H. T. T. K. C. Tekmen, Y. Tsunekawa, "Mechanical Properties of Aluminum Nitride Layer Formed by Duplex Coating of Barrel Nitriding and Plasma Nitriding", journal of Plasma Process and Polymers, vol. 6, pp. S310–S313, 2009.
M. Yoshida, O. M., K. W. R. Ichiki, T. Y. C. Tekmen, and T. K. T. Hara, "Mechanical Properties of Aluminum Nitride Layer Formed by Duplex Coating of Barrel Nitriding and Plasma Nitriding", The Eleventh International Conference on Plasma Surface Engineering (PSE2008), Garmisch-Partenkirchen, Germany, 2008.
M. Yoshida, O. M., T. C. R. Ichiki, and H. T. W. Khalifa, Y. Tsunekawa, "A novel method for the production of AlN film with high adhesion on Al substrate", Journal of Plasma Fusion Research SERIES, vol. 8, pp. pp. 1447-1450, 2009.
M. Yoshida, O. M., T. C. R. Ichiki, W. Khalifa, and H. T. Y. Tsunekawa, "A novel method for the production of AlN film with high adhesion on Al substrate", International Congress on Plasma Physics, ICPP 2008 , Fukuoka International Congress Center, Fukuoka, Japan, 2008.
M. Okumiya, R. Ichiki, C. Tekmen, W. Khalifa, and T. K. Y. Tsunekawa, "Surface Modification of Aluminum Using a Combined Technique of Barrel Nitriding and Plasma Nitriding", The Eleventh International Conference on Plasma Surface Engineering (PSE2008), Garmisch-Partenkirchen, Germany , 2008.
M. Okumiya, M. Yoshida, R. Ichiki, Y.Tsunekawa, and T. M. and W. Khalifa, "Surface Modification of Aluminum Alloy Using a Barrel Nitriding", Fourth International Conference on Advances and Trends in Engineering Materials and Their Applications, AES-ATEMA’2009, Hamburg, Ger, Hamburg, Germany, AES, 2009.
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Khalifa, W., A. M. Samuel, F. H. SAMUEL, and V. S. and H.W. Doty, "Effect of Bi and Ca Additions and Heat Treatment on the Microstructure and Mechanical Properties of the B319 Al Cast Alloys", Proc. 6th Arab Foundry Symposium “Arabcast 2006”, Sharm El-Sheikh – Egypt, The Egyptian Foundrymen’s Soc, pp. pp. 1-13, 2006.
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
Khalifa, W., S. F. H. A.M. Samuel, and H. W. Doty, "Metallographic Observations of the alpha-AlFeSi Phase and Its Role in Porosity Formation in the Al-7%Si Alloys", International Journal of Cast Metals Research, vol. 19, issue 3, pp. 156-66, 2006.
Khalifa, W., CWI part A Lecture1 , , 1st: You Tube, 2014.
Khalifa, W., Y. Tsunekawa, and M. Okumiya, "Effect of Ultrasonic Melt Treatment on the Microstructure of A356 Aluminum Cast Alloys", International Journal of Cast Metals Research, vol. 21, issue 1-3, pp. 129-134, 2008.
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