muhammet gokhan albayrak
@firat.edu.tr
Scopus Publications
- Enhanced Radiation Shielding and Structural Modifications in Samarium (III) Oxide-Reinforced Type 316L Stainless Steel Composites for Nuclear Applications: A Comprehensive Evaluation of Physical, Structural, Mechanical, Gamma-Ray, and Neutron Attenuation Properties
Nihal Yayla, M. Gökhan Albayrak, Ömer Güler, Duygu Sen Baykal, Hessa Alkarrani, Ghada ALMisned, H. O. Tekin
Nuclear Technology, 2026
Type 316L stainless steel (316L-SS) is widely recognized for its exceptional corrosion resistance, making it a preferred material in various industries. However, conventional stainless steel materials are inadequate for radiation shielding applications. While oxide dispersion-strengthened alloy composites with a 316L-SS matrix have been extensively studied in the literature for their mechanical creep properties, their radiation shielding capabilities remain insufficiently explored. This study investigates the potential of samarium oxide (Sm2O3) doped to improve the structural, physical, mechanical, and radiation shielding properties of 316L-SS composites. Samples containing 1%, 5%, 10%, and 20% Sm2O3 by weight were synthesized and extensively characterized using X-ray diffraction and scanning electron microscopy. These analyses revealed enhanced homogeneity and refined grain structure with increasing Sm2O3 content. Gamma-ray and neutron shielding properties demonstrated significant improvements, particularly in composites with 20% Sm2O3 reinforcement, as evidenced by lower half-value layer and mean free path values, along with an increased fast neutron removal cross section. However, a trade-off was observed between radiation shielding performance and mechanical properties: As the Sm2O3 content increased, the elastic modulus decreased, indicating reduced stiffness due to the incorporation of Sm2O3. This trade-off suggests that while Sm2O3 reinforcement effectively enhances radiation shielding, it may not be ideal for structural applications requiring high mechanical strength. Nevertheless, these findings highlight the potential of Sm2O3-doped 316L-SS composites for nonstructural radiation protection systems, particularly in applications where improved shielding performance is prioritized over mechanical stiffness. - Blending effects of boron carbide and lanthanum(III) oxide reinforcements on the structural, physical, mechanical, and radiation shielding properties of 316L-stainless steel composites for nuclear applications
Ghada ALMisned, Nihal Yayla, M.Gökhan Albayrak, Ömer Güler, Duygu Sen Baykal, Hessa Alkarrani, H.O. Tekin
Annals of Nuclear Energy, 2025 - Examining the trade-off between structural, mechanical properties and shielding performance of Pr2O3-enhanced 316L stainless steel
Nihal Yayla, M.Gökhan Albayrak, Ömer Güler, Duygu Sen Baykal, Hessa Alkarrani, Ghada ALMisned, Hesham M.H. Zakaly, H.O. Tekin
Ceramics International, 2025 - An investigation on microstructural, physical, and radiation shielding properties Yb2O3 oxide dispersion-strengthened 316L-SS alloys
Ghada ALMisned, Nihal Yayla, M. Gökhan Albayrak, Ömer Güler, Duygu Sen Baykal, Hessa Alkarrani, Gulfem Susoy, H. O. Tekin
Applied Physics A Materials Science and Processing, 2025 - Synthesis, microstructural refinement, and shielding optimization of Gd2O3-reinforced AISI 316L stainless steel: a multi-dimensional integration assessment for targeted protection applications
Nihal Yayla, M Gökhan Albayrak, Ömer Güler, Duygu Sen Baykal, Hessa Alkarrani, Ghada ALMisned, Bashar Issa, H O Tekin
Physica Scripta, 2025
This study investigates the multi-dimensional effects of increasing Gd2O3 reinforcement on the structural, mechanical, and gamma-ray shielding properties of AISI 316L stainless steel composites. Samples with varying Gd2O3 content (1%, 5%, 10%, and 20% by weight) were synthesized and characterized through x-ray diffraction (XRD), scanning electron microscopy (SEM), and energy dispersive spectroscopy (EDS) to assess the microstructural changes and homogeneity of Gd2O3 dispersion after mechanical milling. The addition of Gd2O3 significantly enhanced the gamma-ray shielding properties, with the mass attenuation coefficient (MAC), linear attenuation coefficient (LAC), and half-value layer (HVL) improving as the Gd2O3 content increased, particularly in low to moderate photon energy ranges. Simultaneously, the elastic modulus exhibited an inverse relationship, decreasing with higher Gd2O3 content due to the lower stiffness of gadolinium compared to iron. Transmission factor (TF) values also decreased, indicating enhanced photon attenuation with higher Gd2O3 content across various thicknesses. The experimental characterization confirmed improved Gd2O3 dispersion and material uniformity after mechanical milling, contributing to the composites’ superior radiation shielding performance. It can be concluded that Gd2O3-reinforced AISI 316L stainless steel composites offer a promising balance between enhanced radiation shielding properties and reduced mechanical stiffness, making them ideal candidates for applications requiring efficient and adaptable radiation protection especially for portable and non-structural shielding applications. - Enhanced radiation shielding via incorporating europium oxide in 316L stainless steel: Synthesis, physical, microstructural, shielding, and mechanical properties
H.O. Tekin, Nihal Yayla, M.Gökhan Albayrak, Ömer Güler, Duygu Sen Baykal, Hessa Alkarrani, Ghada ALMisned
Journal of Materials Research and Technology, 2025
316L stainless steel is widely utilized in various industries due to its excellent corrosion resistance, mechanical strength, and biocompatibility, making it a preferred material for applications in nuclear filed. However, enhancing its radiation shielding and mechanical properties through reinforcement strategies, such as the addition of high-Z materials like Europium(III) oxide, is crucial for extending its functionality in high-radiation environments, where improved performance is essential for safety and durability. In this study, 316L stainless steel composites reinforced with varying amounts of Eu 2 O 3 (1%, 5%, 10%, and 20%) were synthesized and investigated for their structural, mechanical, and radiation shielding properties. X-ray diffraction (XRD) analysis revealed that the face-centered cubic (FCC) structure of the steel matrix was preserved up to 5% Eu 2 O 3 reinforcement, while higher concentrations led to phase formation and crystallographic changes. Scanning electron microscopy (SEM) and energy-dispersive X-ray (EDX) analysis showed uniform element distribution at low reinforcement levels, with particle clustering at 20% Eu 2 O 3 . Transmission factors (TFs) were evaluated using PHITS simulations for photon energies of 0.662 MeV, 1.1732 MeV, and 1.3325 MeV. The 20% Eu 2 O 3 composite exhibited the lowest TF and highest attenuation properties, confirmed by mass and linear attenuation coefficients. Elastic modulus values decreased from 224.46 GPa in pure 316L to 189.26 GPa with 20% Eu 2 O 3 reinforcement, reflecting the inverse relationship between mechanical stiffness and radiation shielding performance. Benchmarking against other shielding materials demonstrated superior performance of the Eu 2 O 3 -reinforced steel in gamma-ray attenuation. The 20% Eu 2 O 3 composite shows strong potential for applications in nuclear radiation shielding where attenuation efficiency is prioritized over mechanical properties. - Dual-effect of Holmium(III) oxide and Boron Carbide reinforcement on physical, microstructural evolution and gamma-ray shielding performance of 316L-SS
Nihal Yayla, M. Gökhan Albayrak, Ömer Güler, Ghada ALMisned, Duygu Sen Baykal, Hessa Alkarrani, Gokhan Kilic, Huseyin Ozan Tekin
Materials Science and Technology United Kingdom, 2025
This study provides one of the first comprehensive evaluations of 316L stainless steel composites reinforced with 10 wt.% B 4 C and varying concentrations of Ho 2 O 3 , proposing a new compositional design for simultaneous structural enhancement and dual gamma-neutron shielding optimization. XRD analysis confirmed the predominance of the austenitic phase with minor martensitic peaks at higher Ho 2 O 3 levels. SEM and EDX results revealed uniform dispersion and improved densification with increasing oxide content. The 316L-B 4 C-20%Ho 2 O 3 composite exhibited the highest mass attenuation coefficient (0.8953 cm 2 /g) and linear attenuation coefficient (6.73 cm −1 ) at 0.1 MeV, demonstrating superior gamma-ray shielding capability. The effective electron density increased from 2.86 × 10 23 to 5.82 × 10 23 electrons/cm³, while the energy absorption buildup factor (EABF) showed a consistent decrease with higher oxide concentrations. Although a slight reduction in fast neutron removal cross-section was observed, the composite maintained satisfactory neutron attenuation performance. Overall, the findings indicate that the 316L-B 4 C-20%Ho 2 O 3 system offers a promising balance between structural stability and dual radiation protection, making it a strong candidate for next-generation nuclear shielding materials. - Innovative Al6061-gadolinium oxide ods alloys: fabrication and comprehensive characterization of microstructural, physical, mechanical, and radiation shielding properties
Ghada ALMisned, Nihal Yayla, M. Gökhan Albayrak, Ömer Güler, Duygu Sen Baykal, H. O. Tekin
Applied Physics A Materials Science and Processing, 2024 - Development and in-depth experimental characterization of novel TiZrNbHfTaOx reinforced 316L stainless steel for advanced nuclear applications
Ömer Güler, M. Gökhan Albayrak, Öyküm Başgöz, E. Kavaz, Hessa Alkarrani, Ghada ALMisned, H.O. Tekin
Nuclear Engineering and Design, 2024
• Enhanced gamma-ray shielding with 20 % HEO, achieving highest mass attenuation coefficients. • Improved neutron absorption demonstrated by 20 % HEO-reinforced sample. • Successful synthesis of TiZrNbHfTaOx HEOs integrated into 316L SS matrix. • Significant improvement in mechanical properties with reduced particle size and enhanced homogeneity. • HEO-reinforced 316L SS composites show superior radiation shielding, outperforming traditional materials. Oxide Dispersion Strengthened (ODS) materials are known for their exceptional performance in high-temperature and radiation environments. This study explores the radiation shielding properties of 316L Stainless Steel reinforced with TiZrNbHfTaOx High-Entropy Oxide (HEO). By integrating HEOs into the 316L stainless steel matrix, we aim to enhance its structural and radiation shielding properties. The HEO was synthesized using high-energy ball milling and oxidation processes, followed by thorough characterization using X-ray diffraction (XRD), scanning electron microscopy (SEM), and energy-dispersive spectroscopy (EDS). Our results indicate significant improvements in both gamma-ray and neutron shielding properties. The 316L SS samples reinforced with 20 % HEO exhibited the highest mass attenuation coefficients (MAC), lowest half-value layers (HVL), and highest effective atomic numbers (Z eff ) across all tested photon energies. These enhancements are attributed to the high atomic number elements and unique synergistic effects of HEOs. Neutron shielding was evaluated through equivalent dose rate measurements, with the 20 % HEO sample demonstrating the highest absorbed dose rate percentage and superior neutron interaction cross-sections. Benchmarking against standard materials confirmed the superior performance of HEO-reinforced 316L SS, making it a promising candidate for advanced radiation shielding in nuclear reactors and other high-radiation environments. Our findings suggest that HEO reinforcement not only improves mechanical properties but also significantly enhances the radiation protection capabilities of 316L stainless steel. - Prediction of wear amounts of AZ91 magnesium alloy matrix composites reinforced with ZnO-hBN nanocomposite particles by hybridized GA-SVR model
Cevher Kursat Macit, Busra Tan Saatci, Muhammet Gokhan Albayrak, Mustafa Ulas, Turan Gurgenc, Cihan Ozel
Journal of Materials Science, 2024 - A Different Approach: Effect of Mechanical Alloying on Pack Boronizing
Muhammet Gökhan Albayrak, Ertan Evin
Journal of Materials Engineering and Performance, 2024 - Microstructure and tribological properties of aluminum matrix composites reinforced with ZnO-hBN nanocomposite particles
Cevher Kürşat Macit, Muhammet Gokhan Albayrak, Burak Tanyeri, Turan Gurgenc, Cihan Ozel
Materialpruefung Materials Testing, 2024 - Semi-quantitative analysis on sea buckthorn phenolic-rich extract coating bone-like open porous NiTi-based alloy
Hafize Yuca, Taha Çağrı Şenocak, Oktay Yiğit, Muhammet Gökhan Albayrak, Zühal Güvenalp
Heliyon, 2024 - A comprehensive microstructural and transmission analysis on oxide dispersion-strengthened (ODS) alloys: Impact of erbium oxide (Er2O3) concentration on physical, structural, gamma-ray, and neutron attenuation properties
Kadir Günoglu, Seval Hale Güler, Ömer Güler, Ghada ALmisned, Hatice Varol Ozkavak, M. Gokhan Albayrak, Iskender Akkurt, Bashar Issa, H.O. Tekin
Ceramics International, 2024 - Photocatalytic Hydrogen Evolution of TiZrNbHfTaOx High-Entropy Oxide Synthesized by Mechano-Thermal Method
Ömer Güler, Mustafa Boyrazlı, Muhammet Gökhan Albayrak, Seval Hale Güler, Tatsumi Ishihara, Kaveh Edalati
Materials, 2024 - Fabrication and structural, physical, and nuclear radiation shielding properties for Oxide Dispersion-Strengthened (ODS) alloys through Erbium (III) oxide, Samarium (III) oxide, and Praseodymium (III) oxide into 316L matrix
Seval Hale Güler, Ömer Güler, E. Kavaz, Ghada ALMisned, M. Gökhan Albayrak, Bashar Issa, H.O. Tekin
Ceramics International, 2024 - Investigation of tribological properties of hexagonal boron nitride reinforced AZ91 magnesium composites produced by powder metallurgy
Cevher Kürşat MACİT, Turan GÜRGENÇ, Muhammet Gökhan ALBAYRAK, Cihan ÖZEL
Journal of Boron, 2023 - Experimental and artificial intelligence approaches to measuring the wear behavior of DIN St28 steel boronized by the box boronizing method using a mechanically alloyed powder source
Muhammet Gökhan Albayrak, Ertan Evi̇n, Oktay Yi̇ği̇t, Mesut Toğaçar, Burhan Ergen
Engineering Applications of Artificial Intelligence, 2023 - Newly synthesized NiCoFeCrW High-Entropy Alloys (HEAs): Multiple impacts of B4C additive on structural, mechanical, and nuclear shielding properties
Ali Oktay Gul, Esra Kavaz, Oykum Basgoz, Omer Guler, Ghada ALMisned, Ersin Bahceci, M. Gokhan Albayrak, H.O. Tekin
Intermetallics, 2022 - The effect of graphene nanoplatelets on technical properties of micro- and nano-sized TiO2 matrix: a comparative research study on electrical and optical characteristics
Ömer Güler, Hakan Ayhan, Öyküm Başgöz, Çağdaş Yavuz, M. Gökhan Albayrak, Ertan Evin, Hasan Safa, Ibrahim S. Yahia
Journal of Materials Science Materials in Electronics, 2020 - Synthesis and characterization of ZnO-reinforced with graphene nanolayer nanocomposites: Electrical conductivity and optical band gap analysis
Ömer Güler, Seval Hale Güler, Öyküm Başgöz, M Gökhan Albayrak, I S Yahia
Materials Research Express, 2019 - Production of graphene layer by liquid-phase exfoliation with low sonication power and sonication time from synthesized expanded graphite
Ömer Güler, S. Hale Güler, Veyis Selen, M. Gokhan Albayrak, Ertan Evin
Fullerenes Nanotubes and Carbon Nanostructures, 2016
