Thermo-mechanical testing of TiO 2 functional coatings using friction stir processing

A significant amount of environmental pollution is caused by oil refinery industries in the form of spent alumina catalyst (SAC) waste generated during the process. This waste causes various detrimental effects on human health. In this study, an effort has been made to consume the SAC in the fabrication of aluminum-based composite materials via the friction stir process (FSP). An X-ray diffraction image of the SAC powder used in this work confirms the occurrence of Al2O3, Fe2O3, SiO2, and CaO phases. These hard-phase materials form the basis for SAC to be used as reinforcement content with the aluminum alloy. The FSP is used to create the composite material. It is evident from the scanning electron microscopy image of the Al/SAC composite developed by the FSP technique that fair distribution of constituent ingredients is attained during the process. The incorporation of SAC contents in the aluminum alloy results in remarkable enlargement in tensile strength and hardness of the composite material. The Al2O3, Fe2O3, SiO2, and CaO phases of SAC showed a considerable effect on thermal expansion and corrosion weight loss of the composite.

Alumina catalyst waste utilization for aluminum-based composites using the friction stir process

Dwivedi¹,

Pachauri²,

Maurya³

et al. 2022

Finite element method analysis of a linear friction welded Ti6Al4V alloy

Ünal

2023

Linear friction welding (LFW), which is generally used in blisk construction in aviation and space industries, is especially used to reduce costs, extend the life of materials working in hot environments, lighten engine weight, etc. The method, which is a solid state welding, achieves a high welding structure in metal and alloy materials. It can also be applied to different material combinations such as titanium alloys, superalloys, steel, aluminum, nickel, and copper. This study, which was carried out in order to provide lower cost and less raw material consumption in the welding of titanium alloys, reveals the necessity of the LFW method. In this study, the temperature change, oscillation amplitude, and oscillation frequency of the Ti6Al4V couple were investigated using the LFW method using finite elements. In the transient thermal analysis, it was observed that the temperature produced by applying Ti6Al4V welding parameters exceeded the glass transition temperature of the material.

Variants of friction stir based processes: review on process fundamentals, material attributes and mechanical properties

Maurya,

Kumar

2023

Friction stir-based variants have entirely changed the outdated component manufacturing method. Magnanimously, it has reached notable achievement in the joining, fabricating and processing of aluminum materials. This research article aims to review the various classifications of friction stir-based techniques. Friction stir-based techniques have improved the joining method along with microstructure and mechanical properties of the material. This article will enlighten the recent progress on friction stir additive manufacturing techniques applied on alloys or fabrication of composites, friction stir welding, additive friction stir deposition, friction stir processing and friction stir cladding. Mechanical properties, feasibility, applications, limitations and process parameters are discussed in details. This review article will help industry persons and academicians to know the process parameters of various techniques along with the outcomes and changes in mechanical and microstructural properties. In the last, challenges in variants of friction stir-based processes were also mentioned.