A study of the microstructure properties of cold sprayed 6061 Al on 7075-T6 aluminum

Ganasan, Logentharan (2023) A study of the microstructure properties of cold sprayed 6061 Al on 7075-T6 aluminum. Project Report. Universiti Teknikal Malaysia Melaka, Melaka, Malaysia. (Submitted)

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Abstract

Deposits are created in the cold spray (CS) process by depositing powder particles at high velocity onto a substrate. CS-deposited powders do not melt before or after contacting the substrate. Because of this property, CS is useful for the deposition of a wide range of materials, most notably metallic alloys, but also ceramics and composites. The particles undergo extreme plastic deformation during processing, resulting in a stronger mechanical and less metallurgical connection with the underlying material. An individual particle's deformation behaviour is determined by a number of material and process factors, which are categorised into three broad groups: powder properties, geometric parameters, and processing parameters, each having their own subcategories. Changing any of these factors causes the microstructure to evolve and, as a result, the mechanical characteristics of the deposit to vary. While cold spray technology has advanced over the last decade, the process is intrinsically complicated, thus the effects of deposition parameters on particle deformation, deposit microstructure, and mechanical characteristics are yet unknown. The goal of this research is to investigate the microstructure characteristics of cold sprayed 6061 Al on 7075-T6 aluminium. The resistance, physical, and microstructure characteristics of 7075 Al-T6 are affected by factors such as coating temperature, pressure, coating thickness, and particle size. In this study, there is FIVE Testings have been carried out which are Scanning Electron Microscope analysis (SEM), Energy Dispersive X-Ray Spectroscopy (EDX), Tensile strength testing, Microhardness testing and Transmission Electron Microscopy (TEM) testing are used to assess the effectiveness of the CS coating process.

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