Microstructural evolution, nanoindentation creep response, and wear properties of Y2O3-modified CoCrFeNi high entropy alloys

TEKİN MUSTAFA,KOTAN HASAN,BALCI ERDEM,KABA MERTCAN,BAYDOĞAN MURAT,GÜRCAN BAYRAK KÜBRA,AYAS ERHAN , Yayın Yeri: Materials Characterization , 2026

UluslararasıHakemliSCI-ExpandedÖzgün Makalehttps://doi.org/10.1016/j.matchar.2025.115942

Influence of Isochronal and Isothermal Annealing on Microstructure and Hardness of Nanocrystalline CoCrFeNi-B<sub>4</sub>C High Entropy Alloy Composites

KOÇ Recep Can,POLAT GÖKHAN,BATIBAY AHMET BURÇİN,KOTAN HASAN , Yayın Yeri: JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE , 2026

UluslararasıHakemliSCI-ExpandedÖzgün Makalehttps://doi.org/10.1007/s11665-025-12146-w

An Overview of the Microstructural, Physical, Mechanical, and Tribological Performance of Beta-Type Titanium Alloys for Total Hip Replacement

Dahmani Marwa,Hezil Naouel,Mamoun Fellah,Mohamed-Cherif Benoudia,KOTAN HASAN,Alejandro Perez Larios,El-Hiti Gamal A , Yayın Yeri: TMS 2025 154TH ANNUAL MEETING & EXHIBITION SUPPLEMENTAL PROCEEDINGS , 2025

UluslararasıHakemliCPCI-SÖzgün Makale

Unveiling the creep mechanisms of rare earth element yttrium added and SPS consolidated CoCrFeNi high entropy alloys

TEKİN MUSTAFA,KOTAN HASAN,BAYDOĞAN MURAT,Kaba Mertcan,BALCI ERDEM,GÜRCAN BAYRAK KÜBRA,AYAS ERHAN , Yayın Yeri: MATERIALS TESTING , 2025

UluslararasıHakemliSCI-ExpandedÖzgün Makale

Hybrid effect of Sm and B4C on grain size stability and hardness of nanocrystalline CoCrFeNi high entropy alloy after isothermal annealin

TAŞDEMİR Esma,KOÇ Recep Can,BATIBAY AHMET BURÇİN,KOTAN HASAN , Yayın Yeri: Journal of Alloys and Compounds , 2025

UluslararasıHakemliSCI-ExpandedÖzgün Makale

Inkjet-printed flexible electrochemical sensors based on palladium and silver-decorated, N-doped holey graphene and nano graphene

Ceylan Ebru,GÜRBÜZ HAVVA NUR,KOTAN HASAN,UZUNOĞLU AYTEKİN , Yayın Yeri: Microchemical Journal , 2025

UluslararasıHakemliSCIÖzgün Makale

Remarkable thermal stability of nanocrystalline CoCrFeNi high entropy alloy achieved through the incorporation of rare-earth element samarium

KOTAN HASAN,KOÇ Recep Can,BATIBAY AHMET BURÇİN , Yayın Yeri: Intermetallics , 2025

UluslararasıHakemliSCI-ExpandedÖzgün Makale

Investigation of the effects of conventional sintering and spark plasma sintering methods on the microstructural properties and hardness of nanostructured CoCrFeNi high entropy alloy

Baloğlu Ali Rıza,TEKİN MUSTAFA,KOTAN HASAN , Yayın Yeri: JOURNAL OF THE FACULTY OF ENGINEERING AND ARCHITECTURE OF GAZI UNIVERSITY , 2024

UluslararasıHakemliSCI-ExpandedÖzgün Makalehttps://doi.org/10.17341/gazimmfd.1344942

Enhancing formability of Ti-6Al-4V cylindrical cups by pulsating hydroforming process: Experimental, numerical and microstructural investigations

ÖZTÜRK OSMAN, AYDIN MEVLÜT, GÖKCEPINAR ÖMER FARUK, İLBEYLİ HARUN MERT, KORKMAZ HABİP GÖKAY, YAPAN YUSUF FURKAN, DİLMEÇ MURAT, HALKACI HÜSEYİN SELÇUK, KOTAN HASAN, LİVATYALI HAYDAR, TOROS SERKAN, TÜRKÖZ MEVLÜT , Yayın Yeri: Engineering Science and Technology, an International Journal , 2024

UluslararasıHakemliSCI-ExpandedÖzgün Makale

Effect of in-situ formed oxide and carbide phases on microstructure and corrosion behavior of Zr/Y doped CoCrFeNi high entropy alloys prepared by mechanical alloying and spark plasma sintering

KOTAN HASAN,TEKİN MUSTAFA,BAYATLI ALEYNA,BAYRAK KÜBRA,KOCABAŞ MUSTAFA,AYAS ERHAN , Yayın Yeri: Intermetallics , 2023

UluslararasıHakemliSCI-ExpandedÖzgün Makale

Wear behavior of in-situ oxide dispersion strengthened Fe-8Ni alloy with Zr additions

TEKİN MUSTAFA, MUHAFFEL FAİZ, KOTAN HASAN, BAYDOĞAN MURAT , Yayın Yeri: Journal of Metals, Materials and Minerals , 2023

UluslararasıHakemliESCIÖzgün Makale

Investigation and production of non-cytotoxic TixNbxSn (x = 5,10,15,20) alloys by high-energy mechanical milling with antibacterial activity

BATIBAY AHMET BURÇİN, ERCİ FATİH, KOTAN HASAN, Karavelioğlu Zeynep, ÇAKIR KOÇ RABİA, ORAL İMRAN, EVCİN ATİLLA , Yayın Yeri: MATERIALS TODAY COMMUNICATIONS , 2023

UluslararasıHakemliSCIÖzgün Makale

Indentation creep behavior of Fe-8Ni-xZr oxide dispersion strengthened alloys

TEKİN MUSTAFA,MUHAFFEL FAİZ,KOTAN HASAN,BAYDOĞAN MURAT , Yayın Yeri: MATERIALS TESTING , 2023

UluslararasıHakemliSCI-ExpandedÖzgün Makale

Inkjet printing of highly dispersed, shortened, and defect-rich MWCNTs to construct flexible electrochemical sensors for the detection of bisphenol A in milk samples

Sarıkaya Sumeyye, İPEKCİ HASAN HÜSEYİN, KOTAN HASAN, UZUNOĞLU AYTEKİN , Yayın Yeri: Carbon , 2023

UluslararasıHakemliSCI-ExpandedÖzgün Makale

Formability improvement in Ti–6Al–4 V sheet at room temperature by pulsating hydraulic bulging: experimental and numerical investigations

ÖZTÜRK OSMAN,Korkmaz Habip,Ataş Gürkan,Aydın Mevlüt,TÜRKÖZ MEVLÜT,TOROS SERKAN,DİLMEÇ MURAT,LİVATYALI HAYDAR,KOTAN HASAN,HALKACI HÜSEYİN SELÇUK , Yayın Yeri: The International Journal of Advanced Manufacturing Technology , 2022

UluslararasıHakemliSCI-ExpandedÖzgün Makale

Microstructural Characterization of Improved Formability of Ti-6Al-4V Sheet by Pulsating Hydraulic Bulging at Room Temperature

YAPAN YUSUF FURKAN, ÖZTÜRK OSMAN, TÜRKÖZ MEVLÜT, DİLMEÇ MURAT, LİVATYALI HAYDAR, HALKACI HÜSEYİN SELÇUK, KOTAN HASAN , Yayın Yeri: Journal of Materials Engineering and Performance , 2022

UluslararasıHakemliSCI-ExpandedÖzgün Makale

An investigation of abnormal grain growth in Zr doped CoCrFeNi HEAs through in-situ formed oxide phases

TEKİN MUSTAFA,POLAT GÖKHAN,KOTAN HASAN , Yayın Yeri: INTERMETALLICS , 2022

UluslararasıHakemliSCI-ExpandedÖzgün Makale

Role of yttrium addition and annealing temperature on thermal stability and hardness of nanocrystalline CoCrFeNi high entropy alloy

POLAT GÖKHAN,TEKİN MUSTAFA,KOTAN HASAN , Yayın Yeri: Intermetallics , 2022

UluslararasıHakemliSCI-ExpandedÖzgün Makale

Microstructural Characterization and Hardness Study of Nanostructured CoCrFeNi High Entropy Alloys with Dual Effect of Y and Nano-Sized Y2O3 Additions

TEKİN MUSTAFA, KOTAN HASAN , Yayın Yeri: Transactions of the Indian Institute of Metals , 2022

UluslararasıHakemliSCI-ExpandedÖzgün Makale

Preparation of defect-rich, N-doped activated carbons via high-energy ball milling and investigation of their electrochemical performances towards hydrogen peroxide sensing

UZUNOĞLU AYTEKİN,KOTAN HASAN,Karaağaç Rumeysa,İPEKCİ HASAN HÜSEYİN , Yayın Yeri: Applied Nanoscience , 2022

UluslararasıHakemliSCI-ExpandedÖzgün Makale

Grain size stabilization of oxide dispersion strengthened CoCrFeNi-Y<sub>2</sub>O3 high entropy alloys synthesized by mechanical alloying

TEKİN MUSTAFA,POLAT GÖKHAN,KALAY YUNUS EREN,KOTAN HASAN , Yayın Yeri: JOURNAL OF ALLOYS AND COMPOUNDS , 2021

UluslararasıHakemliSCI-ExpandedÖzgün Makale

Effect of Y addition on the structural transformation and thermal stability of Ti-22Al-25Nb alloy produced by mechanical alloying

ÇETİN MEHMET EMİN,POLAT GÖKHAN,TEKİN MUSTAFA,BATIBAY AHMET BURÇİN,KOTAN HASAN , Yayın Yeri: MATERIALS TESTING , 2021

UluslararasıHakemliSCI-ExpandedÖzgün Makale

Effect of Hf additions on phase transformation, microstructural stability, and hardness of nanocrystalline 304L stainless steels synthesized by mechanical alloying

KOTAN HASAN,POLAT GÖKHAN,YILDIZ Ayşe Büşra , Yayın Yeri: Advanced Powder Technology , 2021

UluslararasıHakemliSCI-ExpandedÖzgün Makale

Effect of milling time, MWCNT content, and annealing temperature on microstructure and hardness of Fe/MWCNT nanocomposites synthesized by high-energy ball milling

POLAT GÖKHAN,CANBOLAT Ismail Emre,UZUNOĞLU AYTEKİN,KOTAN HASAN , Yayın Yeri: Advanced Powder Technology , 2021

UluslararasıHakemliSCI-ExpandedÖzgün Makale

High Temperature Mechanical Properties and Microstructures of Thermally Stabilized Fe-Based Alloys Synthesized by Mechanical Alloying Followed by Hot Extrusion

KOTAN HASAN,Darling Kris,Luckenbaugh Tom , Yayın Yeri: METALS AND MATERIALS INTERNATIONAL , 2021

UluslararasıHakemliSCI-ExpandedÖzgün Makale

Effect of Composition, Mechanical Alloying Temperature and Cooling Rate on Martensitic Transformation and Its Reversion in Mechanically Alloyed Stainless Steels

POLAT GÖKHAN,KOTAN HASAN , Yayın Yeri: Metals and Materials International , 2020

UluslararasıHakemliSCI-ExpandedÖzgün Makale

Understanding microstructural evolution and hardness of nanostructured Fe89.5Ni8Zr2.5 alloy produced by mechanical alloying and pressureless sintering

POLAT GÖKHAN,BATIBAY AHMET BURÇİN,KOTAN HASAN , Yayın Yeri: Engineering Science and Technology, an International Journal , 2020

UluslararasıHakemliSCI-ExpandedÖzgün Makale

Effect of Y and nano - Y<sub>2</sub>O<sub>3</sub> additions on grain growth and hardness of nanocrystalline austenitic stainless steels produced by mechanical alloying

KOTAN HASAN , Yayın Yeri: JOURNAL OF THE FACULTY OF ENGINEERING AND ARCHITECTURE OF GAZI UNIVERSITY , 2019

UluslararasıHakemliSCIÖzgün Makalehttps://doi.org/10.17341/gazimmfd.460523

Thermal stability, phase transformation and hardness of mechanically alloyed nanocrystalline Fe-18Cr-8Ni stainless steel with Zr and Y2O3 additions

KOTAN HASAN , Yayın Yeri: Journal of Alloys and Compounds , 2018

UluslararasıHakemliSCI-ExpandedÖzgün Makale

A study of microstructural evolution of Fe-18Cr-8Ni, Fe-17Cr-12Ni, and Fe-20Cr-25Ni stainless steels after mechanical alloying and annealing

KOTAN HASAN,Darling Kris , Yayın Yeri: MATERIALS CHARACTERIZATION , 2018

UluslararasıHakemliSCI-ExpandedÖzgün Makalehttps://doi.org/10.1016/j.matchar.2018.02.001

Phase transformation and grain growth behavior of a nanocrystalline 18/8 stainless steel

KOTAN HASAN,Darling Kris A , Yayın Yeri: MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING , 2017

UluslararasıHakemliSCI-ExpandedÖzgün Makalehttps://doi.org/10.1016/j.msea.2017.01.031

Termal Kararlılığı Arttırılmış Demir Esaslı Ferritik Çelik Tozlarının Sıcak Pres ve Sıcak Ekstrüzyon (ECAE) Yöntemleri ile Konsolidasyonu

KOTAN HASAN , Yayın Yeri: Gazi Üniversitesi Mühendislik-Mimarlık Fakültesi Dergisi , 2016

UluslararasıHakemliSCI-ExpandedÖzgün Makalehttps://doi.org/10.17341/gummfd.17389

Microstructural evolution of 316L stainless steels with yttrium addition after mechanical milling and heat treatment

KOTAN HASAN , Yayın Yeri: MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING , 2015

UluslararasıHakemliSCI-ExpandedÖzgün Makale

Isothermal Annealing of a Thermally Stabilized Fe-Based Ferritic Alloy

KOTAN HASAN,Kris A Darling , Yayın Yeri: Journal of Materials Engineering and Performance , 2015

UluslararasıHakemliSCI-ExpandedÖzgün Makale

Structure and mechanical properties of Fe-Ni-Zr oxide-dispersion-strengthened (ODS) alloys

Darling Kris,Kapoor M.,KOTAN HASAN,Hornbuckle BC,Walck SD,Thompson GB,MA Tschopp,Kecskes LJ , Yayın Yeri: JOURNAL OF NUCLEAR MATERIALS , 2015

UluslararasıHakemliSCI-ExpandedÖzgün Makale

Influence of Zr and nano-Y<sub>2</sub>O<sub>3</sub> additions on thermal stability and improved hardness in mechanically alloyed Fe base ferritic alloys

KOTAN HASAN,Darling Kris,Scattergood Ronald O,Koch Carl C , Yayın Yeri: JOURNAL OF ALLOYS AND COMPOUNDS , 2014

UluslararasıHakemliSCI-ExpandedÖzgün Makale

Effect of zirconium on grain growth and mechanical properties of a ball-milled nanocrystalline FeNi alloy

KOTAN HASAN,Darling Kris,Mostafa Saber,Carl C Koch,Ronald O Scattergood , Yayın Yeri: JOURNAL OF ALLOYS AND COMPOUNDS , 2013

UluslararasıHakemliSCI-ExpandedÖzgün Makale

Thermal stability and mechanical properties of nanocrystalline Fe-Ni-Zr alloys prepared by mechanical alloying

KOTAN HASAN,Kris A Darling,Mostafa Saber,Ronald O Scattergood,Carl C Koch , Yayın Yeri: JOURNAL OF MATERIALS SCIENCE , 2013

UluslararasıHakemliSCI-ExpandedÖzgün Makale

High temperature stabilization of nanocrystalline grain size: Thermodynamic versus kinetic strategies

Carl C Koch,Scattergood Ron,Mostafa Saber,KOTAN HASAN , Yayın Yeri: JOURNAL OF MATERIALS RESEARCH , 2013

UluslararasıHakemliSCI-ExpandedÖzgün Makale

An in situ experimental study of grain growth in a nanocrystalline Fe<sub>91</sub>Ni<sub>8</sub>Zr<sub>1</sub> alloy

KOTAN HASAN,Kris A Darling,Mostafa Saber,Ronald O Scattergood,Carl C Koch , Yayın Yeri: JOURNAL OF MATERIALS SCIENCE , 2013

UluslararasıHakemliSCI-ExpandedÖzgün Makale

A predictive model for thermodynamic stability of grain size in nanocrystalline ternary alloys

Mostafa Saber,KOTAN HASAN,Carl C Koch,Ronald Scattergood , Yayın Yeri: JOURNAL OF APPLIED PHYSICS , 2013

UluslararasıHakemliSCI-ExpandedÖzgün Makale

Thermodynamic stabilization of nanocrystalline binary alloys

Mostafa Saber,KOTAN HASAN,Carl C Koch,Ronald Scattergood , Yayın Yeri: JOURNAL OF APPLIED PHYSICS , 2013

UluslararasıHakemliSCI-ExpandedÖzgün Makale

Thermal Stability of Nanocrystalline Grain Size in Ternary Fe-base Alloys

Koch Carl C,Ronald O Scattergood,KOTAN HASAN,Saber Mostafa , Yayın Yeri: Materials Science Forum , 2013

UluslararasıHakemliWOSÖzgün Makale

Thermal stability of nanocrystalline Fe-Cr alloys with Zr additions

Mostafa Saber,KOTAN HASAN,Carl C Koch,Ronald O Scattergood , Yayın Yeri: MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING , 2012

UluslararasıHakemliSCI-ExpandedÖzgün Makale

Effect of annealing on microstructure, grain growth, and hardness of nanocrystalline Fe-Ni alloys prepared by mechanical alloying

KOTAN HASAN,Mostafa Saber,Koch Carl,Scattergood Ronald , Yayın Yeri: MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING , 2012

UluslararasıHakemliSCI-ExpandedÖzgün Makalehttps://doi.org/10.1016/j.msea.2012.05.045

Automated Orientation Imaging Microscopy of Nanoscale Al Thin Films After Rapid Solidification Using SEM and TEM

Andreas Kulovits,Facco Giovanni,KOTAN HASAN,Wiezorek Jorg , Yayın Yeri: Microscopy and Microanalysis , 2010

UluslararasıHakemliSCI-ExpandedÖzgün Makalehttps://doi.org/10.1017/s1431927610053936

Microstructural Evolution and Mechanical Properties of Y Added CoCrFeNi High-entropy Alloys Produced by Arc-melting

POLAT GÖKHAN,KOTAN HASAN , Yayın Yeri: Hittite Journal of Science & Engineering , 2024

UlusalHakemliTR DİZİNÖzgün Makalehttps://doi.org/10.17350/hjse19030000328

Mekanik alaşımlama süresinin Ti10Nb10Sn alaşımının mikroyapı ve mekanik özelliklerine etkisinin araştırılması

BATIBAY AHMET BURÇİN,KOTAN HASAN,EVCİN ATİLLA , Yayın Yeri: El-Cezeri Fen ve Mühendislik Dergisi , 2020

UlusalHakemliTR DİZİNÖzgün Makalehttps://doi.org/10.31202/ecjse.775768

Mekanik alaşımlama süresinin Ti10Nb10Sn alaşımının mikroyapı ve mekanik özelliklerine etkisinin araştırılması

BATIBAY AHMET BURÇİN,KOTAN HASAN,EVCİN ATİLLA , Yayın Yeri: El-Cezeri Fen ve Mühendislik Dergisi , 2020

UlusalHakemliTR DİZİNÖzgün Makalehttps://doi.org/10.31202/ecjse.775768

Mekanik Alaşımlama ile Üretilen Nanokristal Yapılı Östenitik Paslanmaz Çelik Alaşımlarında Y ve nano - Y2O3 İlavelerinin Tane Büyümesi ve Sertliğe Etkisi

KOTAN HASAN , Yayın Yeri: Gazi Üniversitesi Mühendislik-Mimarlık Fakültesi Dergisi , 2018

UlusalHakemliSCI-ExpandedÖzgün Makalehttps://doi.org/10.17341/gazimmfd.460523