Publication in conferences

1- G. Khalaj, M.J. Khalaj, Artificial neural networks to prediction hardness of HAZ with chemical composition and tensile test of X70 pipeline steels, ICWNDT2016, December, 2016 Olympic Hotel, Tehran, Iran.

2- M.J. Khalaj, H. Ahmadi, R.Lesankhosh, G. Khalaj, Production and Properties of Polypropylene / Clay + Nano-Iron Nanocomposite for Food Packaging, 5th International Biennial Conference on Ultrafine Grained and Nanostructured Materials, UFGNSM15, Nov. 2015, Tehran, Iran.

3- M. R. Jandaghi, H. Pouraliakbar, G. Khalaj, Influence of cold rolling on the absorbed energy of severely deformed aluminum, 5th International Biennial Conference on Ultrafine Grained and Nanostructured Materials, UFGNSM15, Nov. 2015, Tehran, Iran.

4- B. Trumic, L. Gomidzelovic, A. Ivanovic, V. Krsti, S. Marjanović, H. Poluraliakbar, G. Khalaj, Pt-based alloys: Effct of impuritis content on the creep rate, rupture tie and relatie elongatin, 46th Internatinal October Conference on Mining and Metallurgy, Bor Lake, Bor (Serbia), 1-4 October 2014, Proceedings (Eds. N. Štrbac, D. Živković and S. Nestorović; Publisher: Technical Faculty in Bor), pp. 338 –341.

5- G. Khalaj, A. Khezrloo, E. Aghaee, M. Nazer-Fakhari, Split tensile strength of slag based geopolymer reinforced with steel fiber, 3rd International Conference on Cement Industry, Energy and Environment (CIEE), University of Tehran, Nov. 2014, Tehran, Iran.

6- G. Khalaj, M. Nazer-Fakhari, B. Paranj, A. Sameni, Dynamic and Static Softening Behaviors of Al- 6%Mg Alloy during two-stage Hot Compression Deformation, Iran International Aluminum Conference (IIAC2014), May2014, Tehran, Iran.

7- G. Khalaj, H. Yoozbashizadeh, A. Khodabandeh, M. Tamizifar, "Modeling of austenite grain growth in the weld heat affected zone of a microalloyed line pipe steel", First International Conference on Welding and Non Destructive Testing (ICWNDT2014), Islamic Azad University, Karaj Branch, February 2014 Alborz, Iran.

8- G. Khalaj, M-J. Khalaj, Modeling the correlation between tensile strength and chemical composition of X70 pipeline steels by means of gene expression programming, 5th Iranian Pipe & Pipeline Conference (Iran Pipe Tech.), Razi Intl. Conference Center, Sep.2013, Tehran, Iran.

9- H. Pouraliakbar, G. Khalaj, K. Rahimi, M-R Jandaghi, A. Nazari, Prediction of grain size in constrained groove pressed aluminum sheets, 4th international conference on Ultrafine Grained and Nanostructured Materials (UFGNSM 2013), University of Tehran, Iran.

10- G. Khalaj, H. Yoozbashizadeh, A. Khodabandeh, M. Khanzadeh, Prediction of Vickers microhardness of low carbon microalloyed steels by Adaptive Network-based Fuzzy Inference Systems, ICMH2013, Islamic Azad University, Majlesi Branch, May 2013, Isfahan, Iran.

11- G. Khalaj, M. Khanzadeh, Artificial neural network to predict the effects of coating parameters on layer thickness of chromium carbonitride coating on pre-nitrided steels, NAMIC 2013, Islamic Azad University, Majlesi Branch, May 2013, Isfahan, Iran.

12- P. Adeli, P. Saber-Ghafouri, P. Fataei, N. Narimani, G. Khalaj,, " Prediction of heat treatments effects on Vickers microhardness of low carbon -Nb microalloyed steels by artificial neural network ", International Conference on Materials Heat Treatment (ICMH 2013), Islamic Azad University, Majlesi Branch, May 2013, Isfahan, Iran.

13- N. Narimani, P. Fataei, P. Saber-Ghafouri, P. Adeli, G. Khalaj, "Modeling layer thickness of duplex ceramic (Cr-C-N) coating on cold work tool steel using fuzzy logic ", New and Advanced Materials International Congress(NAMIC 2013), Islamic Azad University, Majlesi Branch, May 2013, Isfahan, Iran.

14- M.R. Khanzadeh , T. Azimzadegan, G. Khalaj, H. Bakhtiari, M. Asadi Domakani, Dynamic and Static Softening Behaviors of Al-6%Mg Alloy during two-stage Hot Compression Deformation, International Conference on Materials Heat Treatment (ICMH 2013), Islamic Azad University, Majlesi Branch, May 2013, Isfahan, Iran

15- M.R. Khanzadeh , A.Nazari, G. Khalaj, H. Bakhtiari, M. Pourjafari Kasmaiee, Artificial neural networks modeling of impact properties of aluminum-epoxy laminated composites, New and Advanced Materials International Congress(NAMIC 2013), Islamic Azad University, Majlesi Branch, May 2013, Isfahan, Iran.

16- H. Pouraliakbar, G. Khalaj, A. Ghasemi, M. Rafie Azad, M. R. Jandaghi, V. Niksefat, M. Maarefvand, Vanadium-carbonitride coating on tool steels; Experimental and modeling by genetic programming, , International Conference on Materials Heat Treatment (ICMH 2013), Islamic Azad University, Majlesi Branch, May 2013, Isfahan, Iran

17- G. Khalaj, M.J. Khalaj, M. Khakian-Qomi, Effect of volume fraction of ferrite phase on the mechanical properties of dual-phase 4340 steels, 21st Annual International Conference on Mechanical Engineering (ISME2013), May 2013, K.N.Toosi University, Tehran, Iran.

18- G. Khalaj, A. Nazari, Lightweight geopolymer properties, 1st International Conference on Cement Industry, Energy and Environment (CIEE), University of Tehran, Feb. 2013, Tehran, Iran.

19- G. Khalaj, M. Etaat, An artificial neural network model for impact properties in X70 pipeline steels, 4th Iranian Pipe & Pipeline Conference (Iran Pipe Tech.), Razi Intl. Conference Center, Sep.2012, Tehran Iran.

20- G. Khalaj, M.J. Khalaj, M. Khakian-Qomi, Comparison of mechanical properties of bainite/ferrite dual phase 4340 steels with different percents of ferrite, The first international, The Sixth Joint Conference of Iranian Metallurgical Engineering Society & Iranian Foundryman's Society (IMES 2012), Tehran University, Nov. 2012, Tehran, Iran.

21- M. Khanzadeh, A. Nazari , G. Khalaj, "Modeling Ductile to brittle transition temperature of functionally graded steels by ANFIS ", International Conference on Materials Heat Treatment (ICMH 2012), Islamic Azad University, Majlesi Branch, May 2012, Isfahan, Iran

22- M. Khanzadeh, G. Khalaj, A. Nazari, Sh. Riahi, "Properties of lightweight geopolymer with waste ashes and palm oil clinker aggregates", New and Advanced Materials International Congress(NAMIC 2012), Islamic Azad University, Majlesi Branch, May 2012, Isfahan, Iran.

23- G. Khalaj, A. Nazari, M. J. Khalaj, M. M. Kaykha, "Microstructure and hot deformation behavior of AlMg6 alloy produced by equal-channel angular pressing", Iran International Aluminum Conference (IIAC2012), May 2012, Arak, Iran

24- T. Azimzadegan, G. Khalaj, "Microstructure and Ageing Behavior of Friction Stir Welding AA7075-T6 Aluminum Alloy", International Conference on Materials Heat Treatment (ICMH 2011), Islamic Azad University, Majlesi Branch, May 10-12, 2011, Isfahan, Iran

25- T. Azimzadegan, G. Khalaj, M.M. Kaykha, "Microstructure and Ageing Behavior of Friction Stir Welding AA7075-T6 Aluminum Alloy", International Conference WSEAS, Greece, 2011, published in Computational Engineering in Systems Applications, pp. 183- 187.

26- G. Khalaj, M. Khakian Qomi,A. Ekrami, "Effect of volume fractions of ferrite phase on the fatigue properties and farcture of dual-phase 4340 steels", 3rd International Conference on Manufacturing Engineering ICME2011, December 2011, Tehran, Iran. (in  persian)

27- G. Khalaj, M. Khakian Qomi, "Effect of volume fractions of ferrite phase on the fatigue behaviour of dual-phase 4340 steels", 3rd International Conference on Manufacturing Engineering ICME2011, December 2011, Tehran, Iran. (in persian)

28- M.M. Keikha, M. Nakhaei, G. Khalaj, " Control of Sheet Holder and Sheet Thickness in Deep Drawing Process", 15th Annual Conference of the Iranian Metallurgical Engineering Society & 23nd Annual Conference of the Iranian Foundry Society (the fifth joint conference), Isfahan University of Technology, November 2011, Isfahan, Iran. (in persian)

29- T. Azimzadegan, G. Khalaj, "Microstructure and Ageing Behavior of Friction Stir Welding AA7075-T6 Aluminum Alloy", International Conference on Materials Heat Treatment (ICMH 2011), Islamic Azad University, Majlesi Branch, May 2011, Isfahan, Iran.

30- G. Khalaj, M. Khakian Ghomi, A. Ekrami, "Investigation of Effect of Different Percents of Ferrite and Bainite on Tensile Properties of 4340 Dual Phase Steel", The 1st National Congress on Advanced Steels, February 2011, International Center for Science, High Technology & Environmental Sciences, Kerman, Iran, pp. 83-91. (in persian)

31- G. Khalaj, M. Khakian Ghomi, A. Ekrami, "Investigation of Effect of Different Percents of Ferrite and Bainite on Mechanical Properties of 4340 Dual Phase Steel", Steel Symposium 89, March 2011, Esfahan Steel Company, Esfahan, Iran, pp. 425-432. (in persian)

32- M. Khakian Ghomi, G. Khalaj, A. Ekrami, " Effect of Different Percents of Ferrite on Mechanical Properties of AISI 4340 Ferritic-Bainitic Dual Phase Steel", 14th Annual Conference of the Iranian Metallurgical Engineering Society & 22nd Annual Conference of the Iranian Foundry Society (the fourth joint conference), Iran University of Science and Technology, November 2010, Tehran, Iran. (in persian)

33- G. Khalaj, M.J. Khalaj, F. Soleimani, "Effect of Coating Conditions on Structure and Properties of Chromium Carbonitride Coating by Immersing into Low Temperature Salt Bath on Steel", 14th annual conference of the Iranian Metallurgical Engineering Society & 22nd Annual Conference of the Iranian Foundry Society (the fourth joint conference), Iran University of Science and Technology, November 2010, Tehran, Iran. (in persian)

34- G. Khalaj, S.M. Mousavi Khoei, " Vanadium Carbide Coating on DIN 115CrV3 in Borax Salt Bath", 11th National Seminar on Surface Engineering & 6th International Conference and Exhibition of Electroplating, October 2010, Tehran, Iran. (in persian)

35- G. Khalaj, F. Abar, R. Bagheri, "Influence of Aging Heat Treatment on Microstructure and Hardness of Al6061/SiCp Composite", 5th National Surface Engineering and Heat Treatment Congress, Amirkabir University of Technology (Polytechnic), May 2003, Tehran, Iran, pp. 462-468. (in persian)

36- G. Khalaj, S.M. Mousavi Khoei, "Study of Chromium Carbonitride Coating by Immersion into Low Temperature Salt Bath", 5th National Surface Engineering and Heat Treatment Congress, Amirkabir University of Technology (Polytechnic), May 2003, Tehran, Iran, pp. 707-715. (in persian)

37- G. Khalaj, S.M. Mousavi Khoei, "Optimization of Chromium Carbinitride Coating Baths", 5th National Surface Engineering and Heat Treatment Congress, Amirkabir University of Technology (Polytechnic), May 2003, Tehran, Iran, PP. 737-746. (in persian)