|About this Abstract
||2019 TMS Annual Meeting & Exhibition
||Aluminum Alloys, Processing and Characterization
||Numerical Modelling, Microstructural Evolution and Characterization of Laser Cladded Al-Si-Sn Coatings on Ti-6Al-4V Alloy.
||Olawale Samuel Fatoba, Esther Akinlabi, Stephen Akinlabi, Mutiu Erinosho, Monnamme Tlotleng
|On-Site Speaker (Planned)
Aluminium-based alloys have a wide application in the automotive, domestic and aerospace industries. The deterioration of materials during application poses serious threats to the materials structural integrity. Therefore, a material’s susceptibility to wear and surface damage can be reduced by alteration of its surface chemistry, morphology and crystal structure. The present research was aimed at studying the microstructural evolution and characterization of Al-Si-Sn coatings. A 3kW continuous wave ytterbium laser system attached to a KUKA robot was utilized for the fabrication of Al-Sn-Si/Ti-6Al-4V coatings. Ti-6Al-4V/Al-Sn-Si composites were analyzed using optical microscopy, scanning electron microscopy, and x-ray diffraction.
From the obtained results, the system behaves as though the eutectic point is shifted to the higher silicon contents and the eutectic temperature is depressed at higher cooling rates. Moreover, addition of small quantity of ternary element like Sn causes modification of the microstructure.
Keywords: Ti-6Al-4V alloy; temperature distribution; characterization; microstructure; Al-Si-Sn coating
||Planned: Light Metals