@article{ozdemir_witharamage_christudasjustus_darwish_okuyucu_gupta_2022, title={Corrosion behavior of a bulk nanocrystalline Al-Fe alloy}, volume={209}, ISSN={["1879-0496"]}, DOI={10.1016/j.corsci.2022.110727}, abstractNote={Nanocrystalline Al-Fe alloy, with uniform microstructure and high solid solubility of Fe, has been produced by high-energy ball milling. Cyclic potentiodynamic polarization tests revealed high pitting potential. Hardness and corrosion resistance of the Al-Fe alloy were higher than any commercial Al alloy. High hardness and corrosion resistance were attributed to the nanocrystalline structure and formation of solid solution . X-ray photoelectron spectroscopy, secondary ion mass spectrometry , and scanning transmission electron microscopy indicated the incorporation of Fe to the surface film and Fe enrichment at the alloy/surface film interface, which were attributed to the enhanced corrosion performance. • Synthesis of nanocrystalline Al-Fe alloys with high solid solubility of Fe in Al. • High corrosion resistance and high hardness of Al-Fe alloys. • Characterization of surface film using XPS, SIMS and STEM. • Fe enrichment at the alloy metal interface.}, journal={CORROSION SCIENCE}, author={Ozdemir, F. and Witharamage, C. S. and Christudasjustus, J. and Darwish, A. A. and Okuyucu, H. and Gupta, R. K.}, year={2022}, month={Dec} }
 @article{vukkum_ozdemir_storck_gupta_2022, title={Corrosion performance of feedstock modified - Additively manufactured stainless steel}, volume={209}, ISSN={["1879-0496"]}, DOI={10.1016/j.corsci.2022.110724}, abstractNote={Feedstock modified powders were produced by ball-milling commercial 316 L stainless steel powder and 1 wt% additive (Cerium oxide–CeO2, lanthanum (III) nitrate hexahydrate–La(NO3)30.6 H2O and chromium nitride–CrN). Laser-powder bed fusion (L-PBF) was performed on modified feedstock using 180, 200, and 220 W laser power. The influence of additives on microstructure and corrosion performance was investigated on the as-printed and ground/polished conditions of L-PBF-316 L-additive. The corrosion performance was dependent on the type of the additives. The microstructure of the alloys was correlated with the observed corrosion behavior.}, journal={CORROSION SCIENCE}, author={Vukkum, V. B. and Ozdemir, Furkan and Storck, Steven and Gupta, R. K.}, year={2022}, month={Dec} }
 @article{patil_nartu_ozdemir_banerjee_gupta_borkar_2022, title={Effect of Graphene Morphology on the Microstructure, Mechanical and Tribological Behavior of Nickel Matrix Composites}, volume={10}, ISSN={["1543-1851"]}, DOI={10.1007/s11837-022-05532-5}, journal={JOM}, author={Patil, Amit and Nartu, Mohan Sai Kiran Kumar Yadav and Ozdemir, Furkan and Banerjee, Raj and Gupta, Rajeev Kumar and Borkar, Tushar}, year={2022}, month={Oct} }
 @article{ozdemir_gupta_2022, title={Influence of vanadium addition on corrosion behavior of high-energy ball milled aluminum alloy 2024}, volume={9}, ISSN={["1521-4176"]}, url={https://doi.org/10.1002/maco.202213478}, DOI={10.1002/maco.202213478}, abstractNote={AbstractThe effect of V addition on the hardness and corrosion of aluminum alloy 2024 (AA2024) produced by high‐energy ball milling has been investigated. High‐energy ball milled alloys exhibited enhanced solid solubility of alloying elements and ultrafine grains. The addition of V improved the corrosion resistance of the AA2024 alloy, which was attributed to the deposition of V on the cathodic particles and therefore decrease in their ability to sustain large cathodic currents.}, journal={MATERIALS AND CORROSION-WERKSTOFFE UND KORROSION}, author={Ozdemir, Furkan and Gupta, Rajeev K.}, year={2022}, month={Sep} }
 @article{ozdemir_witharamage_darwish_okuyucu_gupta_2022, title={Corrosion behavior of age hardening aluminum alloys produced by high-energy ball milling}, volume={900}, ISSN={["1873-4669"]}, url={http://dx.doi.org/10.1016/j.jallcom.2021.163488}, DOI={10.1016/j.jallcom.2021.163488}, abstractNote={The influence of high energy-ball milling (HEBM) on corrosion and hardness of age hardening aluminum alloys was investigated. Nanocrystalline age hardening (AA2024, AA6061 and AA7075) alloys were produced by HEBM of pre-alloyed powder and subsequent cold compaction under uniaxial pressure of 3 GPa. Cyclic potentiodynamic polarization and immersion tests were conducted in 0.6 M NaCl solution which revealed significantly increased pitting and protection potentials in the HEBM alloys compared to wrought alloys of same composition. X-ray diffraction analysis and transmission electron microscopy indicated grain refinement below 100 nm in the ball milled alloys which was the major strengthening mechanism in the age hardening HEBM alloys. The superior corrosion resistance and hardness of the age hardening ball milled alloys were attributed to nanocrystalline structure, extended solid solubility and homogenous microstructure- free from coarse intermetallic phases.}, journal={JOURNAL OF ALLOYS AND COMPOUNDS}, publisher={Elsevier BV}, author={Ozdemir, Furkan and Witharamage, Chathuranga Sandamal and Darwish, Ahmed Abdelazim and Okuyucu, Hasan and Gupta, Rajeev Kumar}, year={2022}, month={Apr} }
 @article{patil_nartu_ozdemir_banerjee_gupta_borkar_2021, title={Enhancement of the mechanical properties of graphene nanoplatelet (GNP) reinforced nickel matrix nanocomposites}, volume={817}, ISSN={["1873-4936"]}, url={https://doi.org/10.1016/j.msea.2021.141324}, DOI={10.1016/j.msea.2021.141324}, abstractNote={The graphene nanoplatelet (GNP) reinforced nickel matrix composites (Ni-GNP) have been processed using two different ball milling approaches, viz, dry ball milling (DM) and solution ball milling (SBM), followed by consolidation using spark plasma sintering (SPS) technique. The composites were reinforced with varying GNP concentration (0.5–2 wt%) and were milled for up to 12 hr to investigate the effect of premixing technique, milling duration, and GNP concentration on the grain size, microstructure, the dispersion of GNP in the nickel matrix, and mechanical behavior of these composites. Ni-GNP nanocomposites exhibited improved microhardness and tensile strength compared to pure nickel, primarily attributed to grain refinement and load transfer strengthening due to the uniform dispersion of these GNPs within the nickel matrix, promoting effective load transfer during tensile deformation. Ni-0.5GNP composites processed via dry milling followed by SPS exhibited the highest tensile yield strength of 586 MPa as compared to pure nickel and other Ni-GNP composites. The contribution of each strengthening mechanism in the overall improvement in yield strength of Ni-GNP composites has been qualitatively calculated/quantified and compared with experimentally obtained tensile properties.}, journal={MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING}, publisher={Elsevier BV}, author={Patil, Amit and Nartu, Mohan Sai Kiran Kumar Yadav and Ozdemir, Furkan and Banerjee, Raj and Gupta, Rajeev Kumar and Borkar, Tushar}, year={2021}, month={Jun} }
 @inproceedings{influence of milling atmosphere on the corrosion and hardness of high-energy ball milled aluminum and aa2024_2021, booktitle={Corrosion 2021}, year={2021}, month={Apr} }
 @article{patil_nartu_ozdemir_banerjee_gupta_borkar_2021, title={Strengthening effects of multi-walled carbon nanotubes reinforced nickel matrix nanocomposites}, volume={876}, ISSN={["1873-4669"]}, url={https://doi.org/10.1016/j.jallcom.2021.159981}, DOI={10.1016/j.jallcom.2021.159981}, abstractNote={The multi-walled carbon nanotubes (CNTs) reinforced nickel matrix nanocomposites (Ni-CNT) have been processed via ball milling followed by spark plasma sintering (SPS) process. The CNT content in these nanocomposites has been varied from 0.5 to 2 wt% (approximately from 2 to 8 vol%) to study their effect on the dispersion, microstructure, and mechanical behavior of these composites. Two Ni-CNT composite powders pre-mixing techniques have been employed, namely dry milling (DM) and solution ball milling (SBM), to investigate their effect on the dispersion of CNTs within a nickel matrix. The Ni-CNT powder was milled for different durations (1,2,6 and 12 hrs.) to investigate the milling effect on the grain size and the dispersion of CNTs in the nickel matrix. Ni-CNT nanocomposites exhibited improvement in microhardness and mechanical performance in comparison with pure nickel. Ni-1CNT-DM composites exhibited an excellent combination of the tensile yield strength of 455 MPa and around 13% elongation. This improvement in Ni-CNT nanocomposites is primarily attributed to the uniform dispersion of reinforcement within the nickel matrix, refined grain size, and strong nickel CNT interfacial bonding, which effectively transfers stress during tensile deformation. Various strengthening mechanisms associated with CNT-metal matrix composites have been discussed in detail. We have attempted to quantify the contribution of these strengthening mechanisms using micromechanical models.}, journal={JOURNAL OF ALLOYS AND COMPOUNDS}, publisher={Elsevier BV}, author={Patil, Amit and Nartu, Mohan Sai Kiran Kumar Yadav and Ozdemir, Furkan and Banerjee, Raj and Gupta, Rajeev Kumar and Borkar, Tushar}, year={2021}, month={Sep} }
 @article{patil_walunj_ozdemir_gupta_borkar_2021, title={Tribological Behavior of Carbon-Based Nanomaterial-Reinforced Nickel Metal Matrix Composites}, volume={14}, ISSN={["1996-1944"]}, url={https://doi.org/10.3390/ma14133536}, DOI={10.3390/ma14133536}, abstractNote={Carbon nanotubes (CNTs) and graphene nanoplatelets (GNPs) with exceptional mechanical, thermal, chemical, and electrical properties are enticing reinforcements for fabricating lightweight, high-strength, and wear-resistant metal matrix composites with superior mechanical and tribological performance. Nickel–carbon nanotube composite (Ni-CNT) and nickel–graphene nanoplatelet composite (Ni-GNP) were fabricated via mechanical milling followed by the spark plasma sintering (SPS) technique. The Ni-CNT/GNP composites with varying reinforcement concentrations (0.5, 2, and 5 wt%) were ball milled for twelve hours to explore the effect of reinforcement concentration and its dispersion in the nickel microstructure. The effect of varying CNT/GNP concentration on the microhardness and the tribological behavior was investigated and compared with SPS processed monolithic nickel. Ball-on-disc tribological tests were performed to determine the effect of different structural morphologies of CNTs and GNPs on the wear performance and coefficient of friction of these composites. Experimental results indicate considerable grain refinement and improvement in the microhardness of these composites after the addition of CNTs/GNPs in the nickel matrix. In addition, the CNTs and GNPs were effective in forming a lubricant layer, enhancing the wear resistance and lowering the coefficient of friction during the sliding wear test, in contrast to the pure nickel counterpart. Pure nickel demonstrated the highest CoF of ~0.9, Ni-0.5CNT and Ni-0.5GNP exhibited a CoF of ~0.8, whereas the lowest CoF of ~0.2 was observed for Ni-2CNT and Ni-5GNP composites. It was also observed that the uncertainty of wear resistance and CoF in both the CNT/GNP-reinforced composites increased when loaded with higher reinforcement concentrations. The wear surface was analyzed using scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS) analysis to elucidate the wear mechanism in these composites.}, number={13}, journal={MATERIALS}, author={Patil, Amit and Walunj, Ganesh and Ozdemir, Furkan and Gupta, Rajeev Kumar and Borkar, Tushar}, year={2021}, month={Jul} }
 @inproceedings{investigation of the larger scale tungsten production by the electrochemical reduction technique_2016, booktitle={IMMC 2016}, year={2016}, month={Sep} }
 @inbook{özdemir_erdoğan_elmadağlı_karakaya_2016, place={Cham}, title={Production of Tungsten by Pulse Current Reduction of CaWO4}, url={http://dx.doi.org/10.1007/978-3-319-48135-7_15}, DOI={10.1007/978-3-319-48135-7_15}, booktitle={Rare Metal Technology 2016}, publisher={Springer International Publishing}, author={Özdemir, Furkan and Erdoğan, Metehan and Elmadağlı, Mustafa and Karakaya, İshak}, editor={Alam, Shafiq and Kim, Hojong and Neelameggham, Neale R. and Ouchi, Takanari and Oosterhof, HaraldEditors}, year={2016}, pages={151–158} }