In-Situ LENS Fabricated Ti–Al–Si Alloy Phase Transformation and Microstructural Evolution After Isothermal Annealing Heat Treatments

Raji, Sadiq Abiola; Popoola, A. P. I.; Pityana, Sisa; Raji, Nasirudeen Kolawole; Tlotleng, Monnamme

doi:10.1007/978-3-030-92381-5_29

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2024

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Cited by 2 publications

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“…The processing parameters used for the fabricated samples are presented in Table 1 and a total of six alloys were developed for this study. This experimental procedure is similar to the work of Kanyane et al [ 49 ], Tlotleng and Pityana [ 50 ], Raji et al [ [51] , [52] , [53] ]. The alloys were produced at 10.58 mm/s scan speed, 450 W laser power and a center purge of 25 l/min.…”

Section: Methodsmentioning

confidence: 81%

Microstructural, microhardness and electrochemical properties of heat-treated LENS in-situ synthesized Ti–Al-x(Mo, Si) alloys

Raji,

Popoola

2024

Heliyon

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Section: Methodsmentioning

confidence: 81%

Microstructural, microhardness and electrochemical properties of heat-treated LENS in-situ synthesized Ti–Al-x(Mo, Si) alloys

Raji,

Popoola

2024

Heliyon

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Experimental and Computational Thermal Analysis of Ti-Based Alloy Produced by Laser Metal Deposition Technique

Rudolf Kanyane,

Malatji,

Patricia Popoola

et al. 2024

JOM

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A Ti-Fe-Si-Cr-Nb alloy was fabricated using laser metal deposition (LMD) technique. The laser power and scanning speed were varied during fabrication to optimize the processing parameters. The thermal behavior during LMD processing was modeled and simulated by means of COMSOL Multiphysics 6.0 software. The samples produced were characterized using an optical microscope, X-ray diffractometer, and scanning electron microscope coupled with energy dispersive spectroscopy. The microhardness and wear behavior of the alloy were tested using a diamond indenter and ball-on-disk wear machine. The results obtained showed that the alloys exhibited similar dendritic microstructure for all processing parameters. The formation of cracks and pores were evident mainly in samples that were produced at high scanning speed and low laser power. A decrease in microhardness was noticed when the laser power was increased, while an increase in scanning speed yielded samples with high microhardness values. The alloy showed good tribological behavior, but no clear relationship between the wear resistance of the alloy and the variation of the laser processing parameters could be established.

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In-Situ LENS Fabricated Ti–Al–Si Alloy Phase Transformation and Microstructural Evolution After Isothermal Annealing Heat Treatments

Cited by 2 publications

References 27 publications

Microstructural, microhardness and electrochemical properties of heat-treated LENS in-situ synthesized Ti–Al-x(Mo, Si) alloys

Microstructural, microhardness and electrochemical properties of heat-treated LENS in-situ synthesized Ti–Al-x(Mo, Si) alloys

Experimental and Computational Thermal Analysis of Ti-Based Alloy Produced by Laser Metal Deposition Technique

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