1. Dept Metallurgy and Mater Eng, Faculty of Chemical and Metallurgy, Yildiz Technical University, Istanbul, Turkey. E-mail: baksakal@yildiz.edu.tr
2. Dept of Mech Eng, Engineering Faculty, Munzur University, Tunceli, Turkey. E-mail: baksakal2@gmail.com
3. Vocational School of Technical Sci, Adiyaman University, Adiyaman, Turkey. E-mail: mdemirel@adiyaman.edu.tr