Effect of laser power on the microstructure and mechanical properties of laser deposited titanium aluminide composite Kamardeen O. Abdulrahman, Rasheedat M. Mahamood, Esther T. Akinlabi, Adeolu A. Adediran Advances in Materials and Processing Technologies, 2022 In this work, titanium aluminide alloy have been fabricated via the laser deposition technique. The effect of some selected deposition parameters on the microstructure and mechanical properties of produced deposits were studied. The relationship between the laser power, and the microhardness of deposited samples on laser preheated substrate showed an incremental change in laser power from 200 to 600 W. This led to an overall decrease in microhardness of deposited samples from 426 to 373 HV. Sample deposited at 500 W gave the lowest Icorr of 1.8 x 10-8 and the highest Ecorr of -0.138 V. It is evident from the nanoindentation results that indentation modulus and stiffness of sample deposited at 600 W laser power had a lower value compared with 400 W laser power. However, the modulus of both samples fell within titanium alloy modulus range between 105-120 GPa. The microstructures of the deposits are mainly characterized with γ-TiAl and α2-Ti3Al phases and an improved hardness property almost two times higher than that of commercially pure titanium were achieved. It was concluded that changes in the laser power directly causes changes in the microstructure, hardness, stiffness, modulus of elasticity and corrosion resistance of the deposits.
Role of additive manufacturing in the era of Industry 4.0 Rasheedat Modupe Mahamood, Tien C. Jen, Stephen A. Akinlabi, Sunir Hassan, Kamar. O. Abdulrahman, et al. Additive Manufacturing A Tool for Industrial Revolution 4 0, 2021
Metallurgical and corrosion property of additive manufactured titanium alloy-Ti6Al4V R. M. Mahamood, T. Marvins, K. O. Abdulrahman, Y. L. Shuaib-Babata, J. A. Adebisi, et al. Annals of Dunarea De Jos University of Galati Fascicle Xii Welding Equipment and Technology, 2020 Additive manufacturing (AM) is an important manufacturing technology that has changed the way products are designed and manufactured. Laser Metal Deposition (LMD), an AM technology, has the capability of producing components using a 3-Dimensional CAD model, through a layer by layer formation process just like any other AM technology. In this study, the influence of the scanning speed on the corrosion property of Titanium alloy-Ti6Al4V using LMD process was investigated. The scanning speed varied between 0.02 m/s and 0.14 m/s while other processing parameters were kept constant. The electrochemical corrosion test was conducted in sodium chloride (NaCl) solution. The result revealed that the corrosion resistance property was found to increase with the scanning speed.
Characteristics of laser metal deposited titanium aluminide K O Abdulrahman, E T Akinlabi, R M Mahamood Materials Research Express, 2019 The unique properties of titanium and its alloys make them a continuous area of interest for the material researchers and high profile material industries. Titanium and its alloys possess high strength-to-weight ratio and excellent corrosion resistance properties which made them very useful for high temperature applications especially in areas such as energy generation, automobile and aeronautic industries. In this paper, the effect of deposition parameters on the properties of laser fabricated titanium aluminide alloy was studied. Titanium aluminide powder (Ti-4822-4) was deposited on pure titanium substrate using laser engineered net shaping (LENS) technique of additive manufacturing. Processing parameters like the laser power, scanning speed and powder flow rate were varied. Laser power was varied between 300 to 500 W, scanning speed varied between 3.174 to 7.406 mm s−1 and powder flow rate varied between 4.09 to 7.12 g min−1. The design and analysis of the results was carried out using design expert 6.0.8 software. The trends in deposits cracks, heights and microhardness in relation to the deposition parameters have been studied. The outcome of the study showed that cracks in the deposits reduced as the laser power increases and scanning speed reduces. It was also revealed that the overall microhardness increases as the laser power, scanning speed and powder flow rate increases. The height of the deposits increases as the laser power increases, scanning speed decreases and powder flow rate increases. Microscopic images of the deposits revealed massive presence of γ-TiAl and isolated lamellar region of γ-TiAl and Ti3Al.
Microstructural and mechanical properties of failed coupling with an airlock in a flour mill International Journal of Mechanical Engineering and Technology, 2018
Development and effectiveness of a virtual workshop integrated with artificial intelligence for engineering workshop practices QA Ajibade, OD Olawuyi, T Sanusi, HA Ajimotokan, NS Saidu, ... Discover Education , 2026 2026
Investigation on the Causes of Failure and Repair of Manual Water Pump KO Abdulrahman, AS Luqmon Uniosun Journal of Engineering and Environmental Sciences 7 (1) , 2025 2025
DEVELOPMENT OF AN IMPROVED MOTORISED WHEELBARROW FOR CONSTRUCTION SITE OPERATIONS KO Abdulrahman, SD Adeniran, IB Ibrahim, HA Ajimotokan Nigerian Journal of Technological Development 22 (1), 61-68 , 2025 2025 Citations: 1
Design and Fabrication of Solar and Gasoline Dual-Powered Lawn Mower KO Abdulrahman, HK Ibrahim, KK Adeleke, BO Azeez, IA Jamiu, ... ARID ZONE JOURNAL OF ENGINEERING, TECHNOLOGY AND ENVIRONMENT 21 (1), 136-144 , 2025 2025
Combustion characteristics of Torrefied corncob and African birch wood residues at higher heating rate HA Ajimotokan, NS Saidu, MA Aladodo, KO Oladosu, OD Samuel, ... Scientific African 27, e02494 , 2025 2025 Citations: 2
Design and fabrication of a mechanical sweeper KO AbdulRahman, SP Oghenetega, FO Ogunwoye, SJ Olawale, ... Nigerian Journal of Technological Development 21 (4), 116-124 , 2024 2024 Citations: 2
Additive manufacturing technologies for on-demand production of customised Goods in the Era of the 4th industrial revolution KO Abdulrahman, RA Baba Advances in Industrial Engineering in the Industry 4.0 Era, 127-146 , 2024 2024 Citations: 3
Design and Development of Wireless Controlled Eight-Legged Walking Robot H Obasekore, JK Odusote, OK Abdulrahman, AA Adeleke, PP Ikubanni, ... 2024 International Conference on Science, Engineering and Business for … , 2024 2024
Paper 71 - Advancements in Composite Brake Pad Materials: A Review AA Mojeed Okunlola, Peter Omoniyi, Kamaldeen Abdulrahman, Jen Tien-Chien Conference proceedings, 1st Faculty of Engineering and Technology … , 2023 2023
Effect of laser power on the microstructure and mechanical properties of laser deposited titanium aluminide composite KO Abdulrahman, RM Mahamood, ET Akinlabi, AA Adediran Advances in Materials and Processing Technologies 8 (sup3), 1305-1316 , 2022 2022 Citations: 9
Additive Manufacturing (AM): Processing technique for lightweight alloys and composite material KO Abdulrahman, RM Mahamood, ET Akinlabi Handbook of Research on Advancements in the Processing, Characterization … , 2022 2022 Citations: 3
Design and Fabrication of a Manually Operated Rice Transplanter for Local Farmers JA Adeyemi, AD Jakande, KO Abdulrahman USEP: Journal of Research Information in Civil Engineering , 2021 2021
Role of additive manufacturing in the era of Industry 4.0 RM Mahamood, TC Jen, SA Akinlabi, S Hassan, KO Abdulrahman, ... Additive manufacturing, 107-126 , 2021 2021 Citations: 39
Metallurgical and corrosion property of additive manufactured titanium alloy-Ti6Al4V RM Mahamood, T Marvins, KO Abdulrahman, YL Shuaib-Babata, ... Annals of “Dunarea de Jos” University of Galati. Fascicle XII, Welding … , 2020 2020 Citations: 2
Production of biodegradable composites from agricultural waste OR Dada, KO Abdulrahman, ET Akinlabi Biodegradable Compos Mater Manuf Eng 10, 39 , 2019 2019 Citations: 6
Characteristics of laser metal deposited titanium aluminide KO Abdulrahman, ET Akinlabi, RM Mahamood Materials Research Express 6 (4), 046504 , 2019 2019 Citations: 15
Advanced Coating: Laser-Metal Deposition of Titanium Aluminide Composites AK Olajide PQDT-Global , 2019 2019
Effect of set-up height on the performance of pot-in-pot cooling device for storing food and drugs at ambient temperature SA Yahaya, KA Akande, AO Raji, KO Abdulrahman, II Enagi FUOYE Journal of Engineering and Technology , 2019 2019 Citations: 3
Additive manufacturing: laser metal deposition and effect of preheating on properties of deposited Ti-4822-4 alloy KO Abdulrahman, ET Akinlabi, RM Mahamood Additive Manufacturing Technologies from an Optimization Perspective, 165-183 , 2019 2019 Citations: 4
Microstructural and Mechanical Properties of Failed Coupling with an Airlock in a Flour Mill KO Abdulrahman, AA Adediran, A Abraham, S Abdulkareem, IM Olawale, ... International Journal of Mechanical Engineering and Technology (IJMET) 9 … , 2018 2018
MOST CITED SCHOLAR PUBLICATIONS
Laser metal deposition technique: Sustainability and environmental impact KO Abdulrahman, ET Akinlabi, RM Mahamood Procedia manufacturing 21, 109-116 , 2018 2018 Citations: 41
Role of additive manufacturing in the era of Industry 4.0 RM Mahamood, TC Jen, SA Akinlabi, S Hassan, KO Abdulrahman, ... Additive manufacturing, 107-126 , 2021 2021 Citations: 39
Laser metal deposition of titanium aluminide composites: A review KO Abdulrahman, ET Akinlabi, RM Mahamood, S Pityana, M Tlotleng Materials Today: Proceedings 5 (9), 19738-19746 , 2018 2018 Citations: 34
Characteristics of laser metal deposited titanium aluminide KO Abdulrahman, ET Akinlabi, RM Mahamood Materials Research Express 6 (4), 046504 , 2019 2019 Citations: 15
Design of mini combined harvester K Abdulkarim, K Abdulrahman, II Ahmed, S Abdulkareem, JA Adebisi, ... Journal of Production Engineering 20 (1), 55-62 , 2017 2017 Citations: 10
Effect of laser power on the microstructure and mechanical properties of laser deposited titanium aluminide composite KO Abdulrahman, RM Mahamood, ET Akinlabi, AA Adediran Advances in Materials and Processing Technologies 8 (sup3), 1305-1316 , 2022 2022 Citations: 9
Hierarchical Composite Materials: Materials KO Abdulrahman, AM Abed, A Bayode, S Bhowmick, S Dey, TD Hien, ... Manufacturing, Engineering 8 , 2018 2018 Citations: 7
Production of biodegradable composites from agricultural waste OR Dada, KO Abdulrahman, ET Akinlabi Biodegradable Compos Mater Manuf Eng 10, 39 , 2019 2019 Citations: 6
Static fatigue analysis on the load container of a low-cost vehicle for Nigerian rural farmers SA Yahaya, KO Abdulrahman Nigerian Journal of Technology 37 (4), 907-912 , 2018 2018 Citations: 6
Finite element analysis of mini combined harvester chassis and hitch K Abdulkarim, K Abdulrahman, I Ahmed, S Abdulkareem, J Adebisi, ... Journal of production engineering 20, 48-54 , 2017 2017 Citations: 6
Hierarchical composite materials: materials, manufacturing, engineering KO Abdulrahman, AMH Abed, A Bayode, S Bhowmick, S Dey, TD Hien, ... Walter de Gruyter GmbH & Co KG , 2018 2018 Citations: 5
Additive manufacturing: laser metal deposition and effect of preheating on properties of deposited Ti-4822-4 alloy KO Abdulrahman, ET Akinlabi, RM Mahamood Additive Manufacturing Technologies from an Optimization Perspective, 165-183 , 2019 2019 Citations: 4
Additive manufacturing technologies for on-demand production of customised Goods in the Era of the 4th industrial revolution KO Abdulrahman, RA Baba Advances in Industrial Engineering in the Industry 4.0 Era, 127-146 , 2024 2024 Citations: 3
Additive Manufacturing (AM): Processing technique for lightweight alloys and composite material KO Abdulrahman, RM Mahamood, ET Akinlabi Handbook of Research on Advancements in the Processing, Characterization … , 2022 2022 Citations: 3
Effect of set-up height on the performance of pot-in-pot cooling device for storing food and drugs at ambient temperature SA Yahaya, KA Akande, AO Raji, KO Abdulrahman, II Enagi FUOYE Journal of Engineering and Technology , 2019 2019 Citations: 3
Combustion characteristics of Torrefied corncob and African birch wood residues at higher heating rate HA Ajimotokan, NS Saidu, MA Aladodo, KO Oladosu, OD Samuel, ... Scientific African 27, e02494 , 2025 2025 Citations: 2
Design and fabrication of a mechanical sweeper KO AbdulRahman, SP Oghenetega, FO Ogunwoye, SJ Olawale, ... Nigerian Journal of Technological Development 21 (4), 116-124 , 2024 2024 Citations: 2
Metallurgical and corrosion property of additive manufactured titanium alloy-Ti6Al4V RM Mahamood, T Marvins, KO Abdulrahman, YL Shuaib-Babata, ... Annals of “Dunarea de Jos” University of Galati. Fascicle XII, Welding … , 2020 2020 Citations: 2
Advanced manufacturing of compositionally graded composite materials: An overview RM Mahamood, ET Akinlabi, GM Owolabi, KO Abdulrahman Hierarchical Composite Materials: Materials, Manufacturing, Engineering, 41-54 , 2018 2018 Citations: 2
DEVELOPMENT OF AN IMPROVED MOTORISED WHEELBARROW FOR CONSTRUCTION SITE OPERATIONS KO Abdulrahman, SD Adeniran, IB Ibrahim, HA Ajimotokan Nigerian Journal of Technological Development 22 (1), 61-68 , 2025 2025 Citations: 1
