41 documents found, page 1 of 5
Efect of tool rotational speed on microstructure and mechanical properties of f...
Aval, Hamed Jamshidi; Galvão, IvanThis study investigates the effects of different rotational speeds on the friction stir welding process of two distinct materials: an Al-16Si-4Cu-10SiC composite and an Al-4Cu-Mg alloy. The research primarily concentrates on the microstructure, mechanical properties, and corrosion resistance of the welded materials. The findings reveal that surface grooves and tunnel defects emerge at heat inputs of 1296 and 30...
5th international conference on quality innovation and sustainability (ICQIS 20...
Morgado, Teresa; Galvão, Ivan; Abreu, António; Calado, João Manuel Ferreira; Sá, JoséThe conference themes, which address novel and advanced topics on Sustainability, Quality, and Innovation, focused on eight Special Sessions, namely, "Circular Economy and Waste Management – New Approaches, Innovative Technologies, and Business Models", "Failure Prevents: Reliability, Proactivity and Practice, "Lean, TRIZ methodologies Applied to Sustainability Management", "Modelling and Simulation: A way to p...
Microstructural characterization and corrosion-resistance behavior of friction ...
Aval, Hamed Jamshidi; Galvão, IvanThis study examined the effect of traverse speed on the mechanical properties, corrosion-resistance behavior, and microstructure of friction stir-welded A390/10 wt% SiC composites AA2024 Al alloy joints. The laminar flow of both materials was found to diminish in the stir zone (SZ) when the traverse speed of the tool increased from 40 to 80 mm/min, lowering their mixing rate. Large aspect ratio Si particles are...
Characterization of friction stir welded Al-4Cu-Mg alloy / Al-16Si-4Cu-10SiC co...
Aval, Hamed Jamshidi; Galvão, IvanThis study investigated the tool’s rotational speed effect during dissimilar friction stir welding of A390–10 wt.% SiC composite-AA2024 aluminum alloy on microstructure, mechanical properties, and corrosion resistance. The results show that the tunnel defect is created on the advancing side at low rotational speeds of 400 and 600 rpm due to insufficient material flow and a high rotational speed of 1200 rpm due ...
Microstructure and corrosion behavior of A390-10 wt% SiC composite-AA2024-T6 al...
Aval, Hamed Jamshidi; Galvão, IvanThe weldability of aluminum matrix composites to other materials, such as aluminum alloys, is an essential point in expanding the use of these materials. This study investigated the effect of rotational speed and post-weld heat treatment on the microstructure, mechanical properties, and corrosion behavior of A390-10 wt% SiC composite/ AA2024-T6 aluminum alloy dissimilar joint. Friction stir welding is performed...
Evaluation of tool rotational speed effect in Al-16Si-4Cu-10SiC composite/Al-4C...
Jamshidi Aval, Hamed; Galvão, IvanThis study investigated the influence of the rotational speed of the tool with a cylindrical threaded pin on the microstructure, mechanical properties and corrosion resistance of the Al-16Si-4Cu-10SiC composite/Al-4Cu-Mg alloy joint. The results show tunnel defects are formed on the advancing side in the heat input less than 121 J/mm and more than 342 J/mm. With the increase of rotational speed from 800 to 1000...
Effect of Alloying Elements on Intermetallic Formation during Friction Stir Wel...
Beygi, Reza; Galvão, Ivan; Akhavan-Safar, Alireza; Pouraliakbar, Hesam; Fallah, Vahid; da Silva, Lucas F. M.The main drawback of friction stir welding (FSW) dissimilar metals is the formation of intermetallic compounds (IMCs), which are brittle and affect the strength of the joint. The formation of these compounds is inevitable due to their low enthalpy of formation; however, their emergence is an indication of metallurgical bonding between dissimilar metals. This means that the determining factors of intermetallics ...
Joining of Fibre-Reinforced Thermoplastic Polymer Composites by Friction Stir W...
Pereira, Miguel A. R.; Galvão, Ivan; Costa, José Domingos; Amaro, Ana M.; Leal, Rui M.The objective of the current work is to show the potential of the friction stir welding (FSW) and its variants to join fibre-reinforced thermoplastic polymer (FRTP) composites. To accomplish that, the FSW technique and two other important variants, the friction stir spot welding (FSSW) and the refill friction stir spot welding (RFSSW), are presented and explained in a brief but complete way. Since the joining o...
Joining of fibre-reinforced thermoplastic polymer composites by friction stir w...
Pereira, Miguel A.R.; Galvão, Ivan; Costa, José D.; Amaro, A. M.; Leal, RuiThe objective of the current work is to show the potential of the friction stir welding (FSW) and its variants to join fibre-reinforced thermoplastic polymer (FRTP) composites. To accomplish that, the FSW technique and two other important variants, the friction stir spot welding (FSSW) and the refill friction stir spot welding (RFSSW), are presented and explained in a brief but complete way. Since the joining o...
Copper/stainless steel friction stir spot welds: feasibility and microstructura...
Taborda, Diogo; Leal, Rui; Morgado, Teresa; Leitao, Carlos; Galvão, IvanThe possibility of using solid-state joining technologies, such as friction stir welding (FSW) and its variants, to perform dissimilar joints is one of the well know advantages of this class of processes, namely because they are impossible to be produced by other conventional welding processes due to the evident differences in physical and chemical properties of both materials. Relevant advances have been made ...