Publications

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Audiovisual
Book Chapter
El-Mahallawi, I., W. Khalifa, M. El-Saady, and M. R. El-Koussy, "Chapter 15 - Welding-associated failures in power boilers", Handbook of Materials Failure Analysis with Case Studies from the Chemicals, Concrete and Power Industries: Elsevier, 2016.
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.
Conference Paper
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.
Khalifa, W., A. M. Jarrah, O. Elkady, and A. M. Harahsheh, "Effect of Processing Route and Alloying Substitutions on the Microstructure and Magnetic Properties of Ferrite Magnets", TMS 145 Annual Meeting & Exhibition, Nashville, USA, Feb 2016.
Khalifa, W., Y. Tsunekawa, and M. Okumiya, "Effect of Reheating to the Semisolid State on the Microstructure of the A356 Aluminum Alloy Produced by Ultrasonic Melt-Treatment", The 10th International Conference on Semi-Solid Processing of Alloys and Composites (S2P2008), Aachen, Germany, Sept 16–18, 2008.
Khalifa, W., Y. Tsunekawa, and M. Okumiya, "Effect of Ultrasonic Melt-Treatment on the Eutectic Silicon and Iron Intermetallic Phases in Al-Si cast Alloys", International Conference on Processing & Manufacturing of Advanced Materials (Thermec’2009), Berlin, Germany, August 24-29th, 2009.
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.
El-Koussy, M. R., and W. Khalifa, "Investigation of the Main Cause of Driller String Stabilizer Failures", 1st International Quadrennial ICF Conference in Middle East and Africa, “Processing, Performance and Failure Analysis of Engineering Materials, Luxor, EGYPT., Nov. 14–17, 2011.
Khalifa, W., O. El_kady, and A. Eid, "Manufacture of Ferrite Magnets and Polymer-Bonded Magnets: Laboratory Scale Experiments", International Conference on Industry Academia Collaboration, Cairo, Egypt, 6-8 April 2015.
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.
Khalifa, W., and Y.Tsunekawa, "Microstructure Control of the B390 Hyper-eutectic Al-Si Alloy Using Solidification Soniprocessing", 1st International Quadrennial ICF Conference in Middle East and Africa, “Processing, Performance and Failure Analysis of Engineering Materials”, Luxor, EGYPT, Nov. 14–17, 2011.
Khalifa, W., S. El-Hadad, and Y. Tsunekawa, "Microstructure Evolution and Mechanical Properties of Sonoprocessed-Thixocast AC4C Billets", World Foundry Congress , Bilbao, Spain, May 21, 2014.
El-hadad, S., M. Waly, and W. Khalifa, "Microstructure Evolution and Mechanical Properties of α-β Heat Treated Ti-6Al-4V Alloys", MONTREAL’2015 AES-ATEMA 22nd International Conference “Advances and Trends in Engineering Materials and their Applications, Montreal, Canada, June 15-19, 2015.
Khalifa, W., and Y. Tsunekawa, "Microstructure Modification of Al-4.5%Mg Alloy Using Ultrasonic Treatment ", World Foundry Congress, Bilbao, Spain, May 20, 2014.
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.
El-Mahallawi, I., W. Khalifa, A. Shash, and N. Aref, "Roadmap to Egyptian Casting Industry: Material Technology", International Conference on Industry Academia Collaboration, Cairo, Egypt, 6-8 April 2015.
El-Aziz, A., D. S. Raid, and W. Khalifa, "Stability and corrosion behavior of A356 Al-Si alloy treated by high intensity ultrasonic vibrations", 14th All-Polish Corrosion Symposium-“New Achievements in Corrosion Research and Engineering”- 327th Event of the European Federation of Corrosion, Jastrząb/Poraj (near Czestochowa) Poland, 25th - 27th Nov., 2009.
El-Aziz, A. M., W. Khalifa, H. Ahmed, and S. El-Taweel, "Structure and Corrosion Behaviour of Dissimilar Steel Weldments in Acid Media", German - Egyptian Year of Science & Technology, Materials Science Workshop, on Materials Based Manufacturing Technologies, CMRDI, Helwan, Cairo, Egypt., 7-9 May 2007.
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.