Fabrication of forced air cool austempered ductile iron and exploring its corrosion behaviour in a simulated mine water
- Ige, Oladeji O., Olawale, Oluyemi J., Oluwasegun, Kunle M., Aribo, Sunday, Obadele, Babatunde A., Olubambi, Peter A.
- Authors: Ige, Oladeji O. , Olawale, Oluyemi J. , Oluwasegun, Kunle M. , Aribo, Sunday , Obadele, Babatunde A. , Olubambi, Peter A.
- Date: 2017
- Subjects: Austempering process , Forced air cool quenching , Austempered ductile iron
- Language: English
- Type: Conference proceedings
- Identifier: http://hdl.handle.net/10210/217627 , uj:21663 , Citation: Ige, O.O. et al. 2017. Fabrication of forced air cool austempered ductile iron and exploring its corrosion behaviour in a simulated mine water. International Conference on Sustainable Materials Processing and Manufacturing, SMPM 2017, 23-25 January 2017, Kruger National Park
- Description: Abstract: The production of austempered ductile iron (ADI) with uniform microstructure and properties is constrained by the austempering process vis-à-vis the quenching medium. This is as a result of the stringent operating parameters with costly facilities. This limitation has restricted the application of ADI, despite its inherent mechanical and chemical properties. An emerging technology of overcoming this limitation is by austempering with force air cooling equipment, which is accessible, available and cost-efficient. This work characterizes the behaviour of the forced air cool ADI in simulated mine water due to the strategic importance of the mining industry in the global economy. The study establishes the influence of sample section thickness on the corrosion performance. The sample’s thickness were 5, 15, and 20 mm. Electrochemical experiments were performed on the forced air cool ADI at atmospheric pressure and room temperature with method such as open circuit potential (OCP). The post-corrosion analyses were performed using X-ray diffractometry (XRD) and field emission scanning electron microscopy (FESEM). The research highlighted that small section thickness has a more favourable performance compared with larger section. Consideration is also accorded to the capability of the ADI in the studied environment.
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- Authors: Ige, Oladeji O. , Olawale, Oluyemi J. , Oluwasegun, Kunle M. , Aribo, Sunday , Obadele, Babatunde A. , Olubambi, Peter A.
- Date: 2017
- Subjects: Austempering process , Forced air cool quenching , Austempered ductile iron
- Language: English
- Type: Conference proceedings
- Identifier: http://hdl.handle.net/10210/217627 , uj:21663 , Citation: Ige, O.O. et al. 2017. Fabrication of forced air cool austempered ductile iron and exploring its corrosion behaviour in a simulated mine water. International Conference on Sustainable Materials Processing and Manufacturing, SMPM 2017, 23-25 January 2017, Kruger National Park
- Description: Abstract: The production of austempered ductile iron (ADI) with uniform microstructure and properties is constrained by the austempering process vis-à-vis the quenching medium. This is as a result of the stringent operating parameters with costly facilities. This limitation has restricted the application of ADI, despite its inherent mechanical and chemical properties. An emerging technology of overcoming this limitation is by austempering with force air cooling equipment, which is accessible, available and cost-efficient. This work characterizes the behaviour of the forced air cool ADI in simulated mine water due to the strategic importance of the mining industry in the global economy. The study establishes the influence of sample section thickness on the corrosion performance. The sample’s thickness were 5, 15, and 20 mm. Electrochemical experiments were performed on the forced air cool ADI at atmospheric pressure and room temperature with method such as open circuit potential (OCP). The post-corrosion analyses were performed using X-ray diffractometry (XRD) and field emission scanning electron microscopy (FESEM). The research highlighted that small section thickness has a more favourable performance compared with larger section. Consideration is also accorded to the capability of the ADI in the studied environment.
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Flow-induced corrosion behaviour of low alloy steel in the presence of mono-ethylene glycol
- Aribo, Sunday, Sesheweni, Mantsha, Sanumi, Olufemi, Ogunbadejo, Adekunle, Ige, Oladeji, Olubambi, Peter Apata
- Authors: Aribo, Sunday , Sesheweni, Mantsha , Sanumi, Olufemi , Ogunbadejo, Adekunle , Ige, Oladeji , Olubambi, Peter Apata
- Date: 2018
- Language: English
- Type: Conference proceedings
- Identifier: http://hdl.handle.net/10210/279871 , uj:30065 , Citation: Aribo, S. et al. 2018. Flow-induced corrosion behaviour of low alloy steel in the presence of mono-ethylene glycol. IOP Conf. Series: Materials Science and Engineering 430 (2018) 012040 doi:10.1088/1757-899X/430/1/012040
- Description: Abstract: The flow-induced corrosion behaviour of welded low ally steel in 1 wt. % NaCl environment containing monoethylene glycol at 0oC and 25 oC respectively, was investigated. A modified submerged impinging jet rig was adopted to simulate the low temperature environment. Varying speeds between 1 and 3 m/s were used to study the degradation mechanism of the welded steel. Also, the ratio of MEG: 1 wt. % NaCl was kept at 1:4 for the MEG/NaCl solution. Static corrosion condition was also studied and compared with the flowing conditions. Results indicated that the alloy degraded with observable weight loss in pure 1wt. % NaCl at both temperatures whereas there was very negligible weight loss in all the samples in MEG/NaCl solution.
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- Authors: Aribo, Sunday , Sesheweni, Mantsha , Sanumi, Olufemi , Ogunbadejo, Adekunle , Ige, Oladeji , Olubambi, Peter Apata
- Date: 2018
- Language: English
- Type: Conference proceedings
- Identifier: http://hdl.handle.net/10210/279871 , uj:30065 , Citation: Aribo, S. et al. 2018. Flow-induced corrosion behaviour of low alloy steel in the presence of mono-ethylene glycol. IOP Conf. Series: Materials Science and Engineering 430 (2018) 012040 doi:10.1088/1757-899X/430/1/012040
- Description: Abstract: The flow-induced corrosion behaviour of welded low ally steel in 1 wt. % NaCl environment containing monoethylene glycol at 0oC and 25 oC respectively, was investigated. A modified submerged impinging jet rig was adopted to simulate the low temperature environment. Varying speeds between 1 and 3 m/s were used to study the degradation mechanism of the welded steel. Also, the ratio of MEG: 1 wt. % NaCl was kept at 1:4 for the MEG/NaCl solution. Static corrosion condition was also studied and compared with the flowing conditions. Results indicated that the alloy degraded with observable weight loss in pure 1wt. % NaCl at both temperatures whereas there was very negligible weight loss in all the samples in MEG/NaCl solution.
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Wear behaviour of cast aluminium silicon (Al-Si) alloy in Dot 4 brake fluid
- Ajibola, Olawale O., Aribo, Sunday, Ige, Oladeji O., Akinribide, Ojo J., Akinwamide, Samuel O., Olubambi, Peter A.
- Authors: Ajibola, Olawale O. , Aribo, Sunday , Ige, Oladeji O. , Akinribide, Ojo J. , Akinwamide, Samuel O. , Olubambi, Peter A.
- Date: 2019
- Language: English
- Type: Conference proceedings
- Identifier: http://hdl.handle.net/10210/403851 , uj:33858 , Citation: Olawale O Ajibola et al 2019 IOP Conf. Ser.: Mater. Sci. Eng. 628 012012
- Description: Abstract: The frictional sliding behaviour of cast Al-Si alloy was investigated with and without DOT 4 hydraulic brake fluid lubrication/environments. Cast Al-Si specimen was produced from wrought alloy and the specimen surface was metallurgically prepared. The ascast product was characterized with aid of micro-hardness tester, the chemical composition was analysed by X-ray fluorescence (XRF), while X-ray diffraction (XRD) was used to identify phases present, microstructures and surface examinations were done on a high resolution metallurgical Optical Microscope. The properties of the polished and worn sample surfaces were examined by Scanning electron microscope (SEM) equipped with Energy dispersive Xray (EDS) facilities. A 6mm diameter alumina ball under varying normal loads (3-10 N) was rubbed against the surface of the cast Al-Si coupon specimen. The dry and wet sliding wear behaviour was assessed based on the CoF-sliding time behaviour. From the results, the average CoF values of 0.9064 for dry and 0.2038 for wet contacts were obtained. Comparatively, 1.03E-06 and 4.21E-07 minimum wear intensities; and 467290 and 132170 wear resistances were obtained for dry and wet contacts respectively. Behaviour of cast Al-Si in DOT4 were compared with its performance in DOT3 regarding the hydraulic brake system application.
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- Authors: Ajibola, Olawale O. , Aribo, Sunday , Ige, Oladeji O. , Akinribide, Ojo J. , Akinwamide, Samuel O. , Olubambi, Peter A.
- Date: 2019
- Language: English
- Type: Conference proceedings
- Identifier: http://hdl.handle.net/10210/403851 , uj:33858 , Citation: Olawale O Ajibola et al 2019 IOP Conf. Ser.: Mater. Sci. Eng. 628 012012
- Description: Abstract: The frictional sliding behaviour of cast Al-Si alloy was investigated with and without DOT 4 hydraulic brake fluid lubrication/environments. Cast Al-Si specimen was produced from wrought alloy and the specimen surface was metallurgically prepared. The ascast product was characterized with aid of micro-hardness tester, the chemical composition was analysed by X-ray fluorescence (XRF), while X-ray diffraction (XRD) was used to identify phases present, microstructures and surface examinations were done on a high resolution metallurgical Optical Microscope. The properties of the polished and worn sample surfaces were examined by Scanning electron microscope (SEM) equipped with Energy dispersive Xray (EDS) facilities. A 6mm diameter alumina ball under varying normal loads (3-10 N) was rubbed against the surface of the cast Al-Si coupon specimen. The dry and wet sliding wear behaviour was assessed based on the CoF-sliding time behaviour. From the results, the average CoF values of 0.9064 for dry and 0.2038 for wet contacts were obtained. Comparatively, 1.03E-06 and 4.21E-07 minimum wear intensities; and 467290 and 132170 wear resistances were obtained for dry and wet contacts respectively. Behaviour of cast Al-Si in DOT4 were compared with its performance in DOT3 regarding the hydraulic brake system application.
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Wear behaviour of cast aluminium silicon (Al-Si) alloy in dot 4 brake fluid
- Ajibola, Olawale O, Aribo, Sunday, Ige, Oladeji O, Akinribide, Ojo J, Akinwamide, Samuel O, Olubambi, Peter A
- Authors: Ajibola, Olawale O , Aribo, Sunday , Ige, Oladeji O , Akinribide, Ojo J , Akinwamide, Samuel O , Olubambi, Peter A
- Date: 2019
- Language: English
- Type: Conference proceedings
- Identifier: http://hdl.handle.net/10210/405610 , uj:34067 , Citation: Ajibola, O.O. et al. 2019 : Wear behaviour of cast aluminium silicon (Al-Si) alloy in Dot 4 brake fluid. IOP Conf. Series: Materials Science and Engineering 628 (2019) 012012. DOI:10.1088/1757-899X/628/1/012012
- Description: Abstract : The frictional sliding behaviour of cast Al-Si alloy was investigated with and without DOT 4 hydraulic brake fluid lubrication/environments. Cast Al-Si specimen was produced from wrought alloy and the specimen surface was metallurgically prepared. The as- cast product was characterized with aid of micro-hardness tester, the chemical composition was analysed by X-ray fluorescence (XRF), while X-ray diffraction (XRD) was used to identify phases present, microstructures and surface examinations were done on a high resolution metallurgical Optical Microscope. The properties of the polished and worn sample surfaces were examined by Scanning electron microscope (SEM) equipped with Energy dispersive X- ray (EDS) facilities. A 6mm diameter alumina ball under varying normal loads (3-10 N) was rubbed against the surface of the cast Al-Si coupon specimen. The dry and wet sliding wear behaviour was assessed based on the CoF-sliding time behaviour. From the results, the average CoF values of 0.9064 for dry and 0.2038 for wet contacts were obtained. Comparatively, 1.03E-06 and 4.21E-07 minimum wear intensities; and 467290 and 132170 wear resistances were obtained for dry and wet contacts respectively. Behaviour of cast Al-Si in DOT4 were compared with its performance in DOT3 regarding the hydraulic brake system application.
- Full Text:
- Authors: Ajibola, Olawale O , Aribo, Sunday , Ige, Oladeji O , Akinribide, Ojo J , Akinwamide, Samuel O , Olubambi, Peter A
- Date: 2019
- Language: English
- Type: Conference proceedings
- Identifier: http://hdl.handle.net/10210/405610 , uj:34067 , Citation: Ajibola, O.O. et al. 2019 : Wear behaviour of cast aluminium silicon (Al-Si) alloy in Dot 4 brake fluid. IOP Conf. Series: Materials Science and Engineering 628 (2019) 012012. DOI:10.1088/1757-899X/628/1/012012
- Description: Abstract : The frictional sliding behaviour of cast Al-Si alloy was investigated with and without DOT 4 hydraulic brake fluid lubrication/environments. Cast Al-Si specimen was produced from wrought alloy and the specimen surface was metallurgically prepared. The as- cast product was characterized with aid of micro-hardness tester, the chemical composition was analysed by X-ray fluorescence (XRF), while X-ray diffraction (XRD) was used to identify phases present, microstructures and surface examinations were done on a high resolution metallurgical Optical Microscope. The properties of the polished and worn sample surfaces were examined by Scanning electron microscope (SEM) equipped with Energy dispersive X- ray (EDS) facilities. A 6mm diameter alumina ball under varying normal loads (3-10 N) was rubbed against the surface of the cast Al-Si coupon specimen. The dry and wet sliding wear behaviour was assessed based on the CoF-sliding time behaviour. From the results, the average CoF values of 0.9064 for dry and 0.2038 for wet contacts were obtained. Comparatively, 1.03E-06 and 4.21E-07 minimum wear intensities; and 467290 and 132170 wear resistances were obtained for dry and wet contacts respectively. Behaviour of cast Al-Si in DOT4 were compared with its performance in DOT3 regarding the hydraulic brake system application.
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