İSTE Yazarı "Günen, Ali" Araştırma Çıktıları | Scopus İndeksli Yayınlar Koleksiyonu İçin Listeleme
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High-temperature corrosion and oxidation properties of borided CoCrFeNiAl0.5Nb0.5 HEA
Döleker, Kadir Mert; Özgürlük, Yasin; Gökçekaya, Özkan; Günen, Ali; Erdoğan, Azmi (Elsevier, 2023)This study is focused on a detailed investigation of high-temperature corrosion and oxidation behavior of borided CoCrFeNiAl0.5Nb0.5 HEAs, considering their use in advanced engineering applications. CoCrFeNiAl0.5Nb0.5 HEA ... -
Investigation into the influence of boronizing on the wear behavior of additively manufactured Inconel 625 alloy at elevated temperature
Günen, Ali; Gürol, Uǧur; Koçak, Mustafa; Çam, Gürel (Springer, 2023)Directed energy deposition (DED) technology is a cost-effective additive manufacturing method widely used in the production of complex-shaped parts made of various engineering alloys as well as superalloys due to its ... -
Investigation on wear mechanisms of boronized AISI 4140 steel
Bozali, U.; Yaşar, Mustafa; Çetin, Melik; Çay, Vedat Veli; Günen, Ali (Scibulcom Ltd., 2017)In this study, AISI 4140 steel was subjected to box boronizing treatment at 1123 K, 1173 K and 1223 K for 2h, 4h, and 6h with commercially EKabor 2 powders. Friction and wear behaviour of the boronized and following worn ... -
Mechanical Properties and Corrosion Resistance of Borosintered Distaloy Steels
Turgut, Selvin; Günen, Ali (Springer, 2020)Distaloy SA is a sponge iron powder (nominal composition: Fe-1.75Ni-1.5Cu-0.5Mo) widely used in the production of powder metallurgy (P/M) parts in the automotive industry. In this study, Distaloy SA powders were sintered ... -
Micro-abrasion wear behavior of thermal-spray-coated steel tooth drill bits
Günen, Ali (Polish Academy of Sciences, 2016)Wear behavior of four kinds of thermally sprayed coatings on steel tooth drill bits have been investigated by micro-abrasion wear test. The fixed ball micro abrasion wear test was applied for bare substrate and for thermal ... -
Microabrasion Wear Behavior of Fast-Borided Steel Tooth Drill Bits
Günen, Ali; Kanca, Erdoğan; Demir, Mehmet; Er, Yusuf; Sağlam, Gökhan; Gök, Mustafa Sabri (Taylor and Francis Inc., 2017)In this study, the surface of steel tooth drill bits (Ni-Cr-Mo based) was subjected to the solid-state boriding treatment with 10- to 50-nm nanoboron powder. Boriding processes were carried out at a constant temperature ... -
Microstructural and mechanical properties of friction stir welded pure lead
Günen, Ali; Kanca, Erdoğan; Demir, Mehmet; Çavdar, Faruk; Mıstıkoğlu, Selçuk; Çam, Gürel (National Institute of Science Communication and Information Resources (NISCAIR), 2018)The present study focuses on the applicability of friction stir welding to pure Pb plates. The joint performances are evaluated by optical microscopy, microhardness measurements, notch impact tests and three point bending ... -
Microstructural and Tribological Behavior of Pack-Borided Ni-Based Hastelloy C-276 Superalloy
Kanca, Yusuf; Uçgun, Mehmet Can; Günen, Ali (Springer, 2022)Although the toughness and corrosion resistance of Ni-based superalloys are high due to their face-centered-cubic structure, their surface hardness and, thus, wear resistance are not satisfactory. The boriding process is ... -
Microstructural characterization, boriding kinetics and tribo-wear behavior of borided Fe-based A286 superalloy
Günen, Ali; Keddam, Mourad; Alkan, Sabri; Erdoğan, Azmi; Çetin, Melik (Elsevier, 2022)Iron-based superalloys are alloys produced for use in corrosive environments as an alternative to high-cost nickel-based superalloys. However, their average strength and hardness, attributed to their austenitic structures, ... -
Microstructural, wear and corrosion characteristics of boronized AISI 904L superaustenitic stainless steel
Çetin, Melik; Günen, Ali; Kalkandelen, Müge; Karakaş, Mustafa Serdar (Elsevier, 2021)AISI 900 series stainless steels are considered as low-cost alternatives to nickel-based superalloys used for highly corrosive environments. However, in terms of mechanical properties, they have average strength and hardness ... -
Microstructure and mechanical properties of borided CoCrFeNiAl0.25Ti0.5 high entropy alloy produced by powder metallurgy
Erdoğan, Azmi; Günen, Ali; Gök, Mustafa Sabri; Zeytin, Sakin (Elsevier, 2021)CoCrFeNiAl0.25Ti0.5 high entropy alloy alloys (HEA), produced by powder metallurgy were subjected to boriding to improve their mechanical properties. Sintering was carried out at 1200 degrees C for 2 h in Ar, and boriding ... -
Microstructure and mechanical properties of borided inconel 625 superalloy
Günen, Ali; Kanca, Erdoğan (Universidade Federal do Rio de Janeiro, 2017)The Ni-based superalloy Inconel 625 is extensively used owing to its high strength, excellent fabricability, good weldability and outstanding resistance to high temperature corrosion against aggressive environments. However, ... -
Microstructure, some mechanical properties and tribocorrosion wear behavior of boronized Al0.07Co1.26Cr1.80Fe1.42Mn1.35Ni1.10 high entropy alloy
Karakaş, Mustafa Serdar; Günen, Ali; Çarboğa, Cemal; Karaca, Yusuf; Demir, Mehmet; Altınay, Yasemin; Erdoğan, Azmi (Elsevier, 2021)High-entropy alloys (HEAs) with face-centered cubic (FCC) structures exhibit high toughness and corrosion resistance, but their average strengths and relatively low wear resistance can limit their engineering ap-plications. ... -
A new approach to improve some properties of wire arc additively manufactured stainless steel components: Simultaneous homogenization and boriding
Günen, Ali; Gürol, Uğur; Koçak, Mustafa; Çam, Gürel (Elsevier, 2023)Arc-directed energy deposition (Arc-DED), also commonly referred to as wire arc additive manufacturing (WAAM), is a cost-effective 3D metal additive manufacturing process in which large metallic parts can be produced due ... -
A new approach to sintering and boriding of steels "Boro-sintering": Formation, microstructure and wear behaviors
Erdoğan, Azmi; Kurşuncu, Bilal; Günen, Ali; Kalkandelen, Müge; Gök, Mustafa Sabri (Elsevier, 2020)In this study, sintering and boriding methods are applied as a single step, and it is aimed to gain time and economic advantage. For this purpose, powder mixtures prepared in suitable compositions were subjected to sintering ... -
Niobium Carbide Coatings Grown on Cold Work Tool Steel AISI D3 by Thermomechanical Processing: Characterization, Wear and Corrosion Behaviors
Günen, Ali; Açıkgöz, Hasan Hüseyin; Karahan, İsmail Hakkı (Springer, 2023)In this study, niobium carbide (NbC) coatings were grown on AISI D3 cold work tool steel via thermoreactive diffusion (TRD) at 900, 1000 and 1100°C for 2, 4, and 6 h. The microstructures and phase formed, the surface ... -
Pack-Boriding of Monel 400: Microstructural Characterization and Boriding Kinetics
Günen, Ali; Keddam, Mourad; Erdoǧan, Azmi; Karakaş, Mustafa Serdar (Korean Institute of Metals and Materials, 2021)Monel 400 was pack-borided in the temperature range of 1173-1273 K for exposure times of 2-6 h. The boride layers produced on the surface of the alloy were examined by scanning electron microscopy and phase identification ... -
Powder-pack boronizing of CoCrFeNiAl0.5Nb0.5 HEA: Modeling of kinetics, microstructural, mechanical, and tribological characterizations
Günen, Ali; Keddam, Murad; Sünbül, Sefa Emre; İçin, Kürşat; Döleker, Kadir Mert; Gök, Mustafa Sabri; Dal, Serkan; Erdoğan, Azmi (Elsevier, 2022)This study is dedicated to the detailed investigation of boronization kinetic, microstructural, mechanical, and wear properties of high entropy alloys (HEAs) considering their sluggish diffusion effect properties. A ... -
Properties and Corrosion Resistance of AISI H13 Hot-Work Tool Steel with Borided B4C Powders
Günen, Ali; Karahan, İsmail Hakkı; Karakaş, Mustafa Serdar; Kurt, Bülent; Kanca, Yusuf; Çay, Vedat Veli; Yıldız, Murat (Korean Institute of Metals and Materials, 2019)Abstract: In this study, the surface of AISI H13 steel was borided with powder blends of B4C and NaBF4 using the powder-pack method at 800, 900 and 1000 °C for 2, 4 and 6 h. The structural and mechanical characteristics ... -
Properties and High Temperature Dry Sliding Wear Behavior of Boronized Inconel 718
Günen, Ali (Springer, 2020)Silicide-free boride layers were grown on Inconel 718 Ni-based superalloy surface at 850 degrees C, 950 degrees C, and 1050 degrees C for 2, 4, 6 hour by the powder pack-boronizing process using nano-sized B4C powders. The ...