Browsing by Author "Ozturk, Fahrettin"
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Comparison of performances of commercial TWIP900 and DP600 advanced high strength steels in automotive industry
Kilic, Suleyman; Ozturk, Fahrettin (GAZI UNIV, FAC ENGINEERING ARCHITECTURE, 2016)Mechanical properties and formability of TWIP900 steel, which is a new material for automotive industry, are investigated. TWIP steels have a good combination of high strength and high formability. Therefore, they are very ... -
Effects of Aging Temperature, Time, and Pre-Strain on Mechanical Properties of AA7075
Kilic, Suleyman; Kacar, Ilya; Sahin, Mevlut; Ozturk, Fahrettin; Erdem, Oguz (UNIV FED SAO CARLOS, DEPT ENGENHARIA MATERIALS, 2019)Aluminum alloys of the 7xxx series (AA7075) are preferred in the aerospace and automotive industries due to their low densities, high strength, good corrosion resistance properties. Additionally, these alloys show the most ... -
Effects of anisotropic yield functions on prediction of forming limit diagrams of DP600 advanced high strength steel
Ozturk, Fahrettin; Toros, Serkan; Kilic, Suleyman (ELSEVIER SCIENCE BV, 2014)In recent years, numerous researchers have reported that the predicted forming limit diagrams strongly depend on the method of determining the material parameters used in the yield functions and the corresponding the shape ... -
Effects of Pre-strain and Temperature on Bake Hardening of TWIP900CR Steel
Kilic, Suleyman; Ozturk, Fahrettin; Sigirtmac, Tayfun; Tekin, Gokhan (JOURNAL IRON STEEL RESEARCH EDITORIAL BOARD, 2015)The effects of pre-strain and baking temperature on bake hardening behaviour of TWIP900CR steel were investigated. The results reveal that the bake hardening process contributes to an increase in yield strength up to 65 ... -
Evaluation of Formability Under Different Deformation Modes for TWIP900 Steel
Kilic, Suleyman; Ozturk, Fahrettin (ASME, 2017)Automotive manufacturers always seek high strength and high formability materials for automotive bodies. Advanced high strength steels (AHSS) are excellent candidates for this purpose. These steels generally show a reasonable ... -
Investigation of the Performance of Flow Models for TWIP Steel
Kilic, Suleyman; Ozturk, Fahrettin; Picu, Catalin R. (SPRINGER, 2018)Modeling of metal processing requires constitutive laws able to represent the experimental material behavior. Of the large number of available empirical constitutive equations, only a subset may be fitted accurately to ... -
New trend in aerospace industry: Al-Li based alloys
Kilic, Suleyman; Kacar, Ilyas; Ozturk, Fahrettin (GAZI UNIV, FAC ENGINEERING ARCHITECTURE, 2019)Al-Li (Aluminum-Lithium) alloys have become the focus of the aerospace industry due to their low density and high elasticity modulus, excellent corrosion resistance, high hardness, high fatigue crack growth resistance, and ...
