Department of Metallurgical and Materials Engineering, Thesis

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Thesis (853)

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Author
Akyıldız, Öncü (2)
Arıkan, Rafet (2)
Aydoğdu, Abdi (2)
Aydınol, Mehmet Kadri (2)
Aygün, Hacer (2)

Subject
Metallurgy. (49)
Steel (27)
Metals (24)
Aluminum alloys. (21)
Metallurgical and materials engineering. (18)

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1968 - 1979 (95)
1980 - 1999 (301)
2000 - 2019 (427)
2020 - 2022 (30)

Item Type
Master Thesis (758)
Ph.D. Thesis (93)
Thesis (2)

Recent Submissions

Functionalization of glass fiber woven fabrics by ITO coatings and characterization of their electromagnetic properties Özdil Darıcıoğlu, Merve; Dericioğlu, Arcan Fehmi; Department of Metallurgical and Materials Engineering (2022-1-14) ITO sols were deposited on glass fiber woven fabrics by spray pyrolysis technique and electrical conductivity of these layers was controlled to incorporate electromagnetic (EM) wave absorbing characteristics to glass fabri...
Development and production of ductile TiZrNbHfTa refractory high entropy alloy system for extreme environments İroç, Lütfi Koray; Aydoğan Güngör, Eda; Kalay, Yunus Eren; Department of Metallurgical and Materials Engineering (2022-1-13) High entropy alloy (HEA) is a trending material class that was discovered in the early 2000s. By definition, it consists of a single or dual phase by combining 5-13 elements with a 5-35% atomic ratio. They exhibit extraord...
The effect of Si and Mo on the isothermal transformation treatment and tempering of a bainitic medium C steel Kafadar, Gülten; Ögel, Bilgehan; Department of Metallurgical and Materials Engineering (2021-12) Bainitic steels have become popular in recent years that generally include medium-high C(~0.5-1%), high Mn(~1-2%) and high Si (~1-2%) because of their high mechanical properties. However, their transformation time is very ...
Development of amino functionalized POSS based (3-Glycidoxypropyl)trimethoxysilane hybrid sol-gel coatings for aircraft applications Varan, Dilara Çisel; Öztürk, Abdullah; Department of Metallurgical and Materials Engineering (2021-12) An amino functionalized and 50 percent amphiphilic polyhedral oligomeric silsesquioxane (POSS) based (3-Glycidoxypropyl)trimethoxysilane (GPTMS) sol-gel reaction was carried out under extreme basic conditions. Amount of PO...
ELECTROLESS DEPOSITION OF OXIDATION RESISTANT HIGH TEMPERATURE COATINGS IN MOLTEN SALT Ömür, İshak Emre; Karakaya, İshak; Erdoğan, Metehan; Department of Metallurgical and Materials Engineering (2021-9-10) Molybdenum and molybdenum alloy (TZM) can be protected against oxygen in hightemperature environment by developing silicide coating on their surface without damaging their mechanical properties. In this study, molybdenum ...
Interfacial reaction kinetics and microstructural evolution of C/SiC composites to metal joints Saltık, Simge; Dericioğlu, Arcan Fehmi; Department of Metallurgical and Materials Engineering (2021-9-09) In the present study, joining of two dissimilar materials namely C/SiC composites and Ti6Al4V alloys by brazing using Ag-Cu based brazing filler alloys have been investigated. The effect of active Ti element content, addit...
The effects of chemical short-range order on crystallization pathway in ternary marginal glass forming alloys Erdal, Emel; Kalay, Yunus Eren; Department of Metallurgical and Materials Engineering (2021-9-08) Among all the metallic glass-forming systems, Al-based marginal glass-forming alloys (Al-RE or Al-TM-RE) have been recently received significant attention due to their unusual devitrification behavior. The population of n...
High Temperature Mechanical Properties of Ceramic Dispersoid Reinforced 17-4 PH Stainless Steel Produced by Selective Laser Melting Özsoy, Andaç; Dericioğlu, Arcan Fehmi; Aydoğan Güngör, Eda; Department of Metallurgical and Materials Engineering (2021-9-08) Selective Laser Melting (SLM) is a metal additive manufacturing process used to produce complex-shaped parts by the fusion of metal powders by a laser heat source. SLM processing of metals offers various advantages such as...
SILVER-PLATINUM CORE-SHELL NANOWIRES FOR ELECTROCHEMICAL APPLICATIONS Tunca, Şensu; Ünalan, Hüsnü Emrah; Department of Metallurgical and Materials Engineering (2021-7) Silver nanowire (Ag NW) networks are one of the most outstanding candidates for optoelectronic applications to replace the commercial transparent conducting oxides (TCOs). Their high mechanical stability, solution based an...
Combinatorial development of LSF-based cathode materials for intermediate temperature solid oxide fuel cells Kılıç, Fahrettin; Öztürk, Tayfur; Department of Metallurgical and Materials Engineering (2021-6) This thesis focuses on the synthesis, characterization, and processing of LSF based composite cathode for solid oxide fuel cells. The cathode comprises three oxides; LSM, LSF and ScSZ which are synthesized by co-sputtering...
Grain refinement of al-si-mg cast alloys with niobium – boron addition Aldoğan, Enver Burak; Kalkanlı, Ali; Department of Metallurgical and Materials Engineering (2021-2-15) The aim of this thesis is to observe the grain refinement effect of aluminum (Al), niobium (Nb) and boron (B) alloy for silicon and magnesium-based aluminum cast alloys, especially A357. When the silicon content exceeds th...
Development and characterization of catalyst materials of zinc-air batteries Arslan Hamat, Burcu; Aydınol, Mehmet Kadri; Department of Metallurgical and Materials Engineering (2021-2-12) Recently, primary and secondary zinc-air batteries have attracted considerable attention due to their high energy density, safety, availability and low cost. Zinc-air batteries generate electricity through a redox...
Investigating effects of heat treatment processes on microstructural and mechanical properties of additively manufactured 18ni300 maraging steel Aydın, İbrahim; Gür, Cemil Hakan; Department of Metallurgical and Materials Engineering (2020-9-10) 18Ni300 maraging steel (MS300) has exceptional mechanical properties due to nanosize intermetallic precipitates in martensitic matrix. It is preferred for critical aircraft components that require high strength and toughn...
Local Structure and Chemistry in Marginal Forming Alloys Ulucan, Tolga Han; Kalay, Eren; Department of Metallurgical and Materials Engineering (2020-9) In this thesis structural and corresponding mechanical properties of marginal metallic glass-forming alloys were studied. Al90Tb10 system exhibits unique devitrification features due to their exceptional primary crystall...
Development of electrically conductive porous silk fibroin/carbon nanofiber scaffolds Tufan, Yiğithan; Ercan, Batur; Department of Metallurgical and Materials Engineering (2020-8) Tissue engineering applications typically require porous scaffolds which provide requisite surface area for cellular functions, while allowing nutrient, waste and oxygen transport with the surrounding tissues. Concurrently...
Magnetoelectric heterojunction properties of multiferroic materials Özdilek, Çağrı; Özenbaş, A. Macit.; Department of Metallurgical and Materials Engineering (2020) Bismuth ferrite (BiFeO3) has gained a great interest over the past years as it exhibits more than one primary ferroic orders in a single phase. In the first part of this work, optimum parameters, such as reaction temperatu...
Surface modification of tantalum via anodization for orthopedic applications Uslu, Ece; Ercan, Batur; Department of Metallurgical and Materials Engineering (2020) Tantalum has excellent corrosion resistance and mechanical properties suitable for orthopedic applications. However, tantalum exhibits bioinert characteristics and cannot promote desired level of osseointegration with juxt...
Development of high strength lightweight high entropy alloys (LWHEAs) Polat, Gökhan.; Kalay, Yunus Eren; Department of Metallurgical and Materials Engineering (2020) In this thesis, the HEA formation ability of low-density elements was carefully studied in detail. In this respect, lightweight or relatively lightweight elements such as B, Mg, Al, Si, Ti, V, Cr, Mn and combinations of th...
Fatigue behavior of welded API 5L X70 pipeline steel Turhan, Şermin Özlem; Gürbüz, Rıza; Department of Metallurgical and Materials Engineering (2020) In this study, fatigue failure behavior of welded X70 pipeline steel was investigated by rotating bar bending fatigue tests performed at room temperature. S-N curves of base metal, weld and heat-affected zone (HAZ) were pl...
Structural and mechanical characterization of scale-up FeCoCrNi, FeCoCrNiCux, AND FeCoCrNiAlx high entropy alloys (HEAs) Erdal, Ziya Anıl; Kalay, Yunus Eren; Department of Metallurgical and Materials Engineering (2020) High entropy alloys (HEAs) have recently attracted much attention due to their unique properties such as high ambient and elevated temperature strengths, hardness, and good structural stability. FeCoCrNi is one of the well...

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