Browsing by Author "Özer, Gökhan"
Now showing items 1-20 of 36
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1.4462 (AISI 2205) Dubleks Paslanmaz Çelikte Isıl İşlem Koşullarının Faz Değişimi, Sertlik ve Korozyon Davranışı Üzerine Etkilerinin İncelenmesi
Özer, Gökhan (Niğde Ömer Halisdemir Üniversitesi, 2021)Paslanmaz çelikler günümüzde son derece önemli bir yapı malzemesidir. İçerdiği çift faz ile dubleks paslanmaz çelikler son yıllarda oldukça öne çıkan bir malzeme türü olmuştur. 1.4462 paslanmaz çelikleri üstün korozyon ... -
Benefits of Laser Beam Based Additive Manufacturing in Die Droduction
Öter, Zafer Çağatay; Coşkun, Mert; Akça, Yaşar; Sürmen, Ömer; Yılmaz, Mustafa Safa; Özer, Gökhan; Tarakçı, Gürkan; Koç, Ebubekir (Elsevier, 2019)The aim of this study was to benefit from the novel design and production freedom of laser manufacturing in order to alter the existing design concept of extrusion dies and to resolve the limits in die production. A ... -
Comparison of the Effect of Different Topological Designs and Process Parameters on Mechanical Strength in Gears
Bulduk,Mustafa Enes; Çalışkan, Cemal İrfan; Çoşkun, Mert; Özer,Gökhan; Koç, Ebubekir (Springer, 2021)Gear wheels, the first examples of use in the Mesopotamian period, continue to develop with different forms and features together with advanced technologies. Within the scope of this study, the DMLS (direct metal laser ... -
Cooling Slope Casting of AA7075 Alloy Combined with Reheating and Thixoforging
Güler, Kerem Altuğ; Kısasöz, Alptekin; Özer, Gökhan; Karaaslan, Ahmet (Elsevier, 2019)Cooling slope casting has been applied to aluminium casting alloys for producing ingots with non-dendritic microstructure. Semi-solid forming of the AA7075 was studied via cooling slope casting, reheating and thixoforging ... -
Corrosion of Additively Manufactured Metallic Components: A Review
Khan, Hamaid Mahmood; Özer,Gökhan; Yılmaz, Mustafa Safa; Koç, Ebubekir (King Fahd University of Petroleum & Minerals, 2021)The unique additive manufacturing (AM) attributes such as tool-less design, on-site fabrication, short production cycle, and complex structures fabrication can make AM market penetration deeper. The sustained improvements ... -
Dry Sliding Wear Behavior of 316 L Stainless Steel Produced by Laser Powder Bed Fusion: A Comparative Study on Test Temperature
Khan, Hamaid Mahmood; Yılmaz, Mustafa Safa; Karabeyoğlu, Süreyya Sencer; Kisasoz, Alptekin; Özer, Gökhan (Elsevier, 2023)Laser powder bed fusion (LPBF) is becoming more popular and widely acceptable class of the additive manufacturing processes for metallic objects. The impact of test temperatures, sliding speed, and loading conditions on ... -
Efciency Comparison of Conformal Cooling Channels Produced by Additive and Subtractive Manufacturing in Automotive İndustry Plastic İnjection Moulds: A Hybrid Application
Çalışkan, Cemal İrfan; Koca, Aliihsan; Özer, Gökhan; Akbal, Ömer; Bakır, Soner (Springer, 2023)The stages of this study, in which conformal cooling channels (CCCs) integrated mould core produced by LPBF (laser powder bed fusion) and CCC integrated mould core produced by SM (subtractive manufacturing), are used in a ... -
Effect of Building Orientations and Heat Treatments on Alsi10mg Alloy Fabricated by Selective Laser Melting: Microstructure Evolution, Mechanical Properties, Fracture Mechanism and Corrosion Behavior
Tarakçı, Gürkan; Khan, Hamaid Mahmood; Yılmaz, Mustafa Safa; Özer, Gökhan (Emerald Publishing Limited, 2022)Purpose – The present paper aims to systematically investigate the influence of building orientations (0°, 15°, 30°, 45°, 60°, 75°) and heat treatment processes on the macro-/micro-structural, mechanical and electrochemical ... -
The Effect of Conformal Cooling Channels on Welding Process in Parts Produced by Additive Manufacturing, Laser Powder Bed Fusion
Çalışkan, Cemal İrfan; Khan, Hamaid Mahmood; Özer, Gökhan; Waqar, Saad; Tütük, İbrahim (Elsevier, 2022)Given the excellent performance in making lighter, customizable, strong, and aesthetically attractive components at a reduced time and cost, additive manufacturing (AM) presents an unparalleled approach to extending and ... -
Effect of Heat Treatments on the Microstructure and Wear Behaviour of A Selective Laser Melted Maraging Steel
Özer, Gökhan; Khan, Hamaid Mahmood; Tarakçı, Gürkan; Yılmaz, Mustafa Safa; Yaman, Paşa; Karabeyoğlu, Sencer Süreyya; Kısasöz, Alptekin (SAGE, 2022)This study applied classical and intercritical heat treatments to maraging steel (MS1) samples produced with standard additive manufacturing (AM) production parameters. The effects of heat treatment parameters on the ... -
Effect of RRA Heat Treatment on Corrosion and Mechanical Properties of AA7075
Özer, Gökhan; Karaaslan, Ahmet (Wiley, 2019)In this study, a retrogression process (R) has been applied to AA7075 at 180, 240, and 370°C for 15, 30, 90, and 120 min. After the retrogression, reaging treatment (RA) was reapplied with T6 conditions (120°C for 24 ... -
Effect of Secondary Phases on 475°C Embrittlement of 1.4462 and 1.4501 Duplex Stainless Steels at Short-term Heat Treatment Conditions
Kısasöz, Alptekin; Özer, Gökhan; Karaaslan, Ahmet (IOP Publishing Ltd, 2019)Duplex stainless steels (DSSs) are classified according to their chemical composition. Also, the formation of the secondary phases can be defined as a main problem of the DSSs. In this study, decomposition of chromium ... -
Effect of Waste Titanium Chips Addition Into the Aluminum Alloys on Their Microstructure
Özer, Gökhan; Acar, Serhat; Kısasöz, Alptekin; Güler, Kerem Altuğ (Gazi Üniversitesi, 2021)In the present study, turning chips were preferred to add titanium into liquid aluminum. Although being easy to reach and cheap, the chips were thought to be effective in minor titanium addition with their large surface ... -
Effects of Hot Isostatic Pressing and Heat Treatments on Structural and Corrosion Properties of Direct Metal Laser Sintered Parts
Yılmaz, Mustafa Safa; Özer, Gökhan; Öter, Zafer Çağatay; Ertuğrul, Onur (Emerald Publishing Limited, 2021)Purpose – This paper aims to investigate the effects of various heat treatments on microstructure, hardness, porosity and corrosion properties of the parts. Design/methodology/approach – Hot isostatic pressing (HIP) ... -
Effects of Retrogression and Reaging Heat Treatment on the Microstructure, Exfoliation Corrosion, Electrical Conductivity, and Mechanical Properties of AA7050
Özer, Gökhan; Kaya, Işık; Karaaslan, Ahmet (Wiley, 2019)The effects of different retrogression times and temperatures on the microstructure, electrical conductivity, exfoliation corrosion (EXCO), and hardness of the 7050 aluminium alloy were compared with the T6 and ... -
Effects of RRA Heat Treatment on the Exfoliation Corrosion (EXCO), Intergranular Corrosion (IGC), and Electrical Conductivity of AA7075 Alloy
Özer, Gökhan; Karaaslan, Ahmet (Wiley, 2019)The corrosion sensitivity of the AA7075 alloy is related to the distribution, size, continuous, or discontinuous network structure and electrochemical behavior of the grain boundary precipitates. In addition, changes in ... -
Efficiency Research of Conformal Channel Geometries Produced by Additive Manufacturing in Plastic Injection Mold Cores (Inserts) Used in Automotive Industry
Çalışkan, Cemal İrfan; Özer, Gökhan; Koç, Ebubekir; Sarıtaş, Umut Sezer; Yıldız, Coşkun Fırat; Çiçek, Övgü Yağız (Mary Ann Liebert, Inc., 2022)In the production of geometries that traditional methods cannot produce, it is seen that additive manufacturing (AM) technology, which has come to the fore, has been used extensively in conformal cooling channel ... -
Eklemeli Üretim Teknolojileri Üzerine Bir Derleme
Özer, Gökhan (Niğde Ömer Halisdemir Üniversitesi, 2020)Eklemeli üretim, bir 3B CAD modelinin, malzemenin tabakalar halinde birleştirilerek fiziksel bir parçaya dönüştürüldüğü üretim işlemidir. Eklemeli üretim son yıllarda oldukça önem kazanmış ve gelecekte daha çok hayatımızda ... -
Heat Treatment, Microstructure and Corrosion Relationship on 316L SS Produced by AM
Özer, Gökhan (Taylor & Francıs Ltd., 2022)In this study, 316L stainless steel (SS) samples produced with standard parameters using the Additive Manufacturing method were heat treated with different parameters, and the effects of heat treatment on the microstructure, ... -
Improvement of Corrosion Resistance of Maraging Steel Manufactured by Selective Laser Melting Through Intercritical Heat Treatment
Khan, Hamaid Mahmood; Özer, Gökhan; Yılmaz, Mustafa Safa; Tarakçı, Gürkan (Natl Assoc Corrosion Eng, 2022)Selective laser melting allows the layerwise fabrication of bespoke designs, creating new prospects in applications and properties compared to conventional methods. Like other ultra-high-strength steels, maraging steels ...
