Analysis of the influence of the laser power on the microstructure and properties of titanium alloy - reinforced boron carbide matrix composite (Ti6Al4V-B4C)
- Ogunlana, Musibau O., Akinlabi, Esther Titilayo, Erinosho, Mutiu F.
- Authors: Ogunlana, Musibau O. , Akinlabi, Esther Titilayo , Erinosho, Mutiu F.
- Date: 2018
- Subjects: Dry sliding wear , LMD , Microhardness
- Language: English
- Type: Article
- Identifier: http://hdl.handle.net/10210/289888 , uj:31461 , Citation: Ogunlana, M.O., Akinlabi, E.T. & Erinosho, M. 2018. Analysis of the influence of the laser power on the microstructure and properties of titanium alloy - reinforced boron carbide matrix composite (Ti6Al4V-B4C).
- Description: Abstract: Laser Metal Deposition (LMD) process is a means of producing metal composites with the aid of laser beam being ejected onto the substrate with the participating powder and fused together after solidification. In this research work, Ti6Al4V alloy is fused with 20 wt % of B4C in order to form metal matrix composites (MMCs). Using the Ytterbium Fibre Laser System powdered at 3000 W, the laser powers were varied between 800 W and 2400 W while all other supporting process parameters were kept constant. The deposited Ti6Al4V-B4C composites were characterized through the surfacing microstructure, microhardness and dry sliding wear. The microstructural properties of the deposited samples were profound with Widmanstätten structure of α-Ti, β-Ti and (α+β) Ti phases. The microhardness tests revealed that the composites deposited with a laser power of 2000 W exhibited the highest hardness value and standard deviation of HV 445 ± 61. Furthermore characterisation revealed that, the sample produced with the laser power of 800 W had the lowest wear loss and wear rate of 35.2 x 10-3 mm3 and 6.42 x 10-4 mm3/Nm. However, the motivation for this work is to improve the material properties of Ti6Al4V alloy for surface engineering applications.
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- Authors: Ogunlana, Musibau O. , Akinlabi, Esther Titilayo , Erinosho, Mutiu F.
- Date: 2018
- Subjects: Dry sliding wear , LMD , Microhardness
- Language: English
- Type: Article
- Identifier: http://hdl.handle.net/10210/289888 , uj:31461 , Citation: Ogunlana, M.O., Akinlabi, E.T. & Erinosho, M. 2018. Analysis of the influence of the laser power on the microstructure and properties of titanium alloy - reinforced boron carbide matrix composite (Ti6Al4V-B4C).
- Description: Abstract: Laser Metal Deposition (LMD) process is a means of producing metal composites with the aid of laser beam being ejected onto the substrate with the participating powder and fused together after solidification. In this research work, Ti6Al4V alloy is fused with 20 wt % of B4C in order to form metal matrix composites (MMCs). Using the Ytterbium Fibre Laser System powdered at 3000 W, the laser powers were varied between 800 W and 2400 W while all other supporting process parameters were kept constant. The deposited Ti6Al4V-B4C composites were characterized through the surfacing microstructure, microhardness and dry sliding wear. The microstructural properties of the deposited samples were profound with Widmanstätten structure of α-Ti, β-Ti and (α+β) Ti phases. The microhardness tests revealed that the composites deposited with a laser power of 2000 W exhibited the highest hardness value and standard deviation of HV 445 ± 61. Furthermore characterisation revealed that, the sample produced with the laser power of 800 W had the lowest wear loss and wear rate of 35.2 x 10-3 mm3 and 6.42 x 10-4 mm3/Nm. However, the motivation for this work is to improve the material properties of Ti6Al4V alloy for surface engineering applications.
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Influence of dynamical analysis of laser power on titanium alloy with boron carbide (Ti6Al4V-B4C) metal matrix composites
- Ogunlana, Musibau O., Akinlabi, Esther Titilayo, Erinosho, Mutiu F.
- Authors: Ogunlana, Musibau O. , Akinlabi, Esther Titilayo , Erinosho, Mutiu F.
- Date: 2017
- Subjects: B4C powder , Dry sliding wear , Laser metal deposition (LMD)
- Language: English
- Identifier: http://hdl.handle.net/10210/233878 , uj:23889 , Citation: Ogunlana, M.O., Akinlabi, E.T. & Erinosho, M.F. 2017. Influence of dynamical analysis of laser power on titanium alloy with boron carbide (Ti6Al4V-B4C) metal matrix composites. Journal of Mechanical Engineering.
- Description: Abstract: LMD process is a means of producing metal composites with the aid of laser beam and powder fusing together. In this research work, Ti6Al4V alloy is fused with 10 wt % of B4C in order to form metal matrix composites (MMCs), and using the Ytterbium Fibre Laser System powdered at 3000 W. The laser powers were varied between 800 W and 2400 W while all other supporting process parameters were kept constant. The deposited composites were characterized through the surfacing microstructure, microhardness and dry sliding wear. The microstructural properties of the deposited samples were profound with α-Ti, β-Ti and intermetallic phase of (α+β) of titanium alloy and boron carbide particles. The microhardness tests revealed that the composites deposited with a laser power of 2000 W exhibited the highest hardness value of HV 471. Furthermore characterisation revealed that the sample produced with the laser power of 800 W produced the lowest wear loss and wear rate of 35.2 x 10-3 mm3 and 6.42 x 10-4 mm3/Nm. However, this paper presents a detailed study on the LMD of Ti6Al4V-B4C composites in order to improve the material properties for surface engineering applications.
- Full Text:
- Authors: Ogunlana, Musibau O. , Akinlabi, Esther Titilayo , Erinosho, Mutiu F.
- Date: 2017
- Subjects: B4C powder , Dry sliding wear , Laser metal deposition (LMD)
- Language: English
- Identifier: http://hdl.handle.net/10210/233878 , uj:23889 , Citation: Ogunlana, M.O., Akinlabi, E.T. & Erinosho, M.F. 2017. Influence of dynamical analysis of laser power on titanium alloy with boron carbide (Ti6Al4V-B4C) metal matrix composites. Journal of Mechanical Engineering.
- Description: Abstract: LMD process is a means of producing metal composites with the aid of laser beam and powder fusing together. In this research work, Ti6Al4V alloy is fused with 10 wt % of B4C in order to form metal matrix composites (MMCs), and using the Ytterbium Fibre Laser System powdered at 3000 W. The laser powers were varied between 800 W and 2400 W while all other supporting process parameters were kept constant. The deposited composites were characterized through the surfacing microstructure, microhardness and dry sliding wear. The microstructural properties of the deposited samples were profound with α-Ti, β-Ti and intermetallic phase of (α+β) of titanium alloy and boron carbide particles. The microhardness tests revealed that the composites deposited with a laser power of 2000 W exhibited the highest hardness value of HV 471. Furthermore characterisation revealed that the sample produced with the laser power of 800 W produced the lowest wear loss and wear rate of 35.2 x 10-3 mm3 and 6.42 x 10-4 mm3/Nm. However, this paper presents a detailed study on the LMD of Ti6Al4V-B4C composites in order to improve the material properties for surface engineering applications.
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Influence of process parameters on porosity behaviour of laser metal deposited titanium composites
- Ogunlana, Musibau O., Akinlabi, Esther Titilayo
- Authors: Ogunlana, Musibau O. , Akinlabi, Esther Titilayo
- Date: 2016
- Subjects: Boron carbide , Laser power , Porosity
- Language: English
- Type: Conference proceedings
- Identifier: http://hdl.handle.net/10210/214397 , uj:21276 , Citation: Ogunlana, M.O & Akinlabi, E.T. 2016. Influence of process parameters on porosity behaviour of laser metal deposited titanium composites.
- Description: Abstract: This research paper reports the effect of laser power on the degree of porosity of the deposited tracks and characterized the specific porous structure. The results revealed that as the laser power was increased, the degree of porosity was however reduced. Prior the characterization process, titanium alloy and boron carbide (Ti6Al4V-B4C) composites powder were deposited on Ti6Al4V substrate using laser metal deposition (LMD) process through the application of Ytterbium fibre laser system. The laser power was varied between 800 W and 2400 W at interval of 200 W while all other process parameters were kept constant. The maximum capacity of this laser system is 3.0 KW which provides beam size of 4 mm for the control characterization of the deposited samples. After the deposition process, the samples were sectioned for porosity analysis and microstructural studies. The sectioned samples were however mounted, ground and polished according to standard metallurgical preparation of titanium alloys. The polished samples were then etched using Kroll’s reagent. Porosity analysis was observed using the optical microscope equipped with Analysis Docu Image Processing Software (ADIPS) to establish the percentage porosity and the maximum pore sizes of the composites...
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- Authors: Ogunlana, Musibau O. , Akinlabi, Esther Titilayo
- Date: 2016
- Subjects: Boron carbide , Laser power , Porosity
- Language: English
- Type: Conference proceedings
- Identifier: http://hdl.handle.net/10210/214397 , uj:21276 , Citation: Ogunlana, M.O & Akinlabi, E.T. 2016. Influence of process parameters on porosity behaviour of laser metal deposited titanium composites.
- Description: Abstract: This research paper reports the effect of laser power on the degree of porosity of the deposited tracks and characterized the specific porous structure. The results revealed that as the laser power was increased, the degree of porosity was however reduced. Prior the characterization process, titanium alloy and boron carbide (Ti6Al4V-B4C) composites powder were deposited on Ti6Al4V substrate using laser metal deposition (LMD) process through the application of Ytterbium fibre laser system. The laser power was varied between 800 W and 2400 W at interval of 200 W while all other process parameters were kept constant. The maximum capacity of this laser system is 3.0 KW which provides beam size of 4 mm for the control characterization of the deposited samples. After the deposition process, the samples were sectioned for porosity analysis and microstructural studies. The sectioned samples were however mounted, ground and polished according to standard metallurgical preparation of titanium alloys. The polished samples were then etched using Kroll’s reagent. Porosity analysis was observed using the optical microscope equipped with Analysis Docu Image Processing Software (ADIPS) to establish the percentage porosity and the maximum pore sizes of the composites...
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Surface effect of laser power on microstructural evolution and hardness behaviour of titanium matrix composites
- Ogunlana, Musibau O., Akinlabi, Esther Titilayo
- Authors: Ogunlana, Musibau O. , Akinlabi, Esther Titilayo
- Date: 2016
- Subjects: Boron carbide , Laser metal deposition , Titanium alloy
- Language: English
- Type: Conference proceedings
- Identifier: http://hdl.handle.net/10210/92390 , uj:20224 , Citation: Ogunlana, M.O., & Akinlabi, E.L. 2016. Surface effect of laser power on microstructural evolution and hardness behaviour of titanium matrix composites.
- Description: Abstract: In this paper, Titanium alloy (Ti6Al4V) powder and boron carbide (B4C) powder metal matrix composites (MMCs) were embedded on titanium alloy (Ti6Al4V) substrate using laser metal deposition (LMD). The laser power was varied between 800 W and 2400 W at an interval of 200 W while all other processing parameters were kept constant. The maximum capacity of the laser system is 3.0 KW which provides beam size of 4 mm for the control characterization of the deposited samples. The microstructural properties of the deposited samples were profound with α and β (intermetallic phase of α+β) of titanium alloy and boron carbide particles. The optical microscope (OM) was employed to characterise the grain sizes and microstructures. The microhardness were characterized using the Vickers’ hardness indenter in which the microhardness of the composites revealed an increase in the samples as the laser power increases. The hardness were observed to be between 371Hv and 471Hv for the cladded samples when compared to the substrate with approximately 360Hv.
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- Authors: Ogunlana, Musibau O. , Akinlabi, Esther Titilayo
- Date: 2016
- Subjects: Boron carbide , Laser metal deposition , Titanium alloy
- Language: English
- Type: Conference proceedings
- Identifier: http://hdl.handle.net/10210/92390 , uj:20224 , Citation: Ogunlana, M.O., & Akinlabi, E.L. 2016. Surface effect of laser power on microstructural evolution and hardness behaviour of titanium matrix composites.
- Description: Abstract: In this paper, Titanium alloy (Ti6Al4V) powder and boron carbide (B4C) powder metal matrix composites (MMCs) were embedded on titanium alloy (Ti6Al4V) substrate using laser metal deposition (LMD). The laser power was varied between 800 W and 2400 W at an interval of 200 W while all other processing parameters were kept constant. The maximum capacity of the laser system is 3.0 KW which provides beam size of 4 mm for the control characterization of the deposited samples. The microstructural properties of the deposited samples were profound with α and β (intermetallic phase of α+β) of titanium alloy and boron carbide particles. The optical microscope (OM) was employed to characterise the grain sizes and microstructures. The microhardness were characterized using the Vickers’ hardness indenter in which the microhardness of the composites revealed an increase in the samples as the laser power increases. The hardness were observed to be between 371Hv and 471Hv for the cladded samples when compared to the substrate with approximately 360Hv.
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Wear behaviour characterization of ti6al4vb4c composites
- Ogunlana, Musibau O., Akinlabi, Esther Titilayo
- Authors: Ogunlana, Musibau O. , Akinlabi, Esther Titilayo
- Date: 2016
- Subjects: Ball-on-disc , Linearly reciprocating , Sliding wear
- Language: English
- Type: Conference proceedings
- Identifier: http://hdl.handle.net/10210/214412 , uj:21278 , Citation: Ogunlana, M.O & Akinlabi, E.T. 2016. Wear behaviour characterization of ti6al4vb4c composites.
- Description: Abstract: Dry sliding wear behaviour is fundamental mainly in typical components in manufacturing which has been found to correlate to both safety and cost effective. Thus, wear behaviours were carried out using ball-on-disc tribometer equipment called CETRUMT-2 which operates with linear reciprocating motion drive. Ball-on-disc test is regarded as one of the most common tests used to study and analyse the wear behaviour. Evaluating the wear volume and wear rate of respective samples, ball-on-disc tests were performed on the Universal Micro materials Tester (UMT-2), produced by Centre for Tribology, Inc. (CETR), USA. The wear tests were performed using a tungsten carbide ball of about 10 mm diameter with a constant stroke length of 2 mm together with application normal load of 25 N. Thus, frequency for the reciprocating spindle was maintained at 5 Hz together with speed of 5 mm/s which was also maintained throughout the test. In this paper, the ball-on-disc was used for the investigation of the effects of normal load and hardness of Ti6Al4V-B4C composites on wear behaviour under dry and sliding conditions...
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- Authors: Ogunlana, Musibau O. , Akinlabi, Esther Titilayo
- Date: 2016
- Subjects: Ball-on-disc , Linearly reciprocating , Sliding wear
- Language: English
- Type: Conference proceedings
- Identifier: http://hdl.handle.net/10210/214412 , uj:21278 , Citation: Ogunlana, M.O & Akinlabi, E.T. 2016. Wear behaviour characterization of ti6al4vb4c composites.
- Description: Abstract: Dry sliding wear behaviour is fundamental mainly in typical components in manufacturing which has been found to correlate to both safety and cost effective. Thus, wear behaviours were carried out using ball-on-disc tribometer equipment called CETRUMT-2 which operates with linear reciprocating motion drive. Ball-on-disc test is regarded as one of the most common tests used to study and analyse the wear behaviour. Evaluating the wear volume and wear rate of respective samples, ball-on-disc tests were performed on the Universal Micro materials Tester (UMT-2), produced by Centre for Tribology, Inc. (CETR), USA. The wear tests were performed using a tungsten carbide ball of about 10 mm diameter with a constant stroke length of 2 mm together with application normal load of 25 N. Thus, frequency for the reciprocating spindle was maintained at 5 Hz together with speed of 5 mm/s which was also maintained throughout the test. In this paper, the ball-on-disc was used for the investigation of the effects of normal load and hardness of Ti6Al4V-B4C composites on wear behaviour under dry and sliding conditions...
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