FEM Numerical and Experimental Work on Extrusion Welding of 7021 Aluminum Alloy

Leśniak, Dariusz; Libura, Wojciech; Leszczyńska-Madej, Beata; Bogusz, Marek; Madura, Jacek; Płonka, Bartłomiej; Boczkal, Sonia; Jurczak, Henryk

doi:10.3390/ma16175817

Cited by 4 publications

(2 citation statements)

References 31 publications

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“…Studies conducted on extruded Mg-Al-Zn alloys also indicate that complete dynamic recrystallization occurred in the welding areas [10]. Current studies on Al-Zn-Mg alloys extruded on porthole dies show a significant differentiation in the microstructure between the welded area and the outside of the weld [11].…”

Section: Introductionmentioning

confidence: 98%

Effects of Zn, Mg, and Cu Content on the Properties and Microstructure of Extrusion-Welded Al–Zn–Mg–Cu Alloys

Remsak,

Boczkal,

Limanówka

et al. 2023

Materials

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The study presents the results of research on the influence of different contents of main alloying additions, such as Mg (2 ÷ 2.5 wt.%), Cu (1.2 ÷ 1.9 wt.%), and Zn (5.5 ÷ 8 wt.%), on the strength properties and plasticity of selected Al–Zn–Mg–Cu alloys extruded on a bridge die. The test material variants were based on the EN AW-7075 alloy. The research specimens, in the form of 100 mm extrusion billets obtained with the DC casting method, were homogenized and extrusion welded during direct extrusion on a 5 MN horizontal press. A 60 × 6 mm die cross-section was used, with one bridge arranged in a way to extrude a flat bar with a weld along its entire length. The obtained materials in the F and T6 tempers were characterized in terms of their strength properties, hardness, and microstructure, using EBSD and SEM. The extrusion welding process did not significantly affect the properties of the tested materials; the measured differences in the yield strength and tensile strength between the materials, with and without the welding seam, were up to ±5%, regardless of chemical composition. A decrease in plasticity was observed with an increase in the content of the alloying elements. The highest strength properties in the T6 temper were achieved for the alloy with the highest content of alloying elements (10.47 wt.%), both welded and solid. Significant differences in the microstructure between the welded and solid material in the T6 temper were observed.

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Section: Introductionmentioning

confidence: 98%

Effects of Zn, Mg, and Cu Content on the Properties and Microstructure of Extrusion-Welded Al–Zn–Mg–Cu Alloys

Remsak,

Boczkal,

Limanówka

et al. 2023

Materials

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“…Associated with all joining processes, the integration of numerical modeling is crucial for a deeper understanding of complex phenomena. In fact, computational simulations help to predict strength and analyze thermal distributions, stress concentrations, and material flow during joining processes [ 14 , 15 ].…”

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confidence: 99%

Advances in the Experimentation and Numerical Modeling of Material Joining Processes

Campilho

2023

Materials

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Latest advances in extrusion processes of light metals

Leśniak,

Zasadziński,

Libura

et al. 2024

Arch. Civ. Mech. Eng.

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The paper presents a review of the literature and authors’ research on the current achievements in the field of extrusion of aluminium alloys, magnesium alloys, powders and aluminium-based composites in particular. The microstructure transformations taking place during homogenisation of billets from the medium- and high-strength heat-treatable aluminium alloys are still an object of interest of researchers. The recently published papers are related to dissolution of soluble phases formed during solidification and elimination of microsegregation, precipitation of the dispersoids, insoluble phases’ transformation as well as particles re-precipitation during cooling. The novelties in the extrusion of magnesium alloys and aluminium-based composites are shortly reported. Specifics of the extrusion dies design and their working conditions, which limit the products quality and working life of the tools, are extensively reported. The computer-aided designing (CAD) and finite-element method (FEM) and 3D optical scanning were used in analysis aimed at dimensional deviations of the dies and the extruded products. The surface engineering techniques such as welding techniques, diffusion layers and protective coatings such as produced by physical vapour deposition (PVD), plasma-enhanced physical vapour deposition (PAPVD), chemical vapour deposition (CVD) and plasma-enhanced chemical vapour deposition (PECVD) are described. Various original methods of extrusion including the severe plastic deformation processes (SPD), such as cyclic extrusion compression (CEC), equal-channel angular pressing (ECAP) and hydrostatic extrusion (HE) are discussed. The above techniques as well as the new KOBO extrusion process with oscillating die movement generate significant refining of the microstructure of metals and alloys and enable consolidation of the powdered materials. The application of the rapid solidification process connected with the hot extrusion permits production of beneficial microstructure and above-standard mechanical properties of the extruded products. Finally, the opportunities and directions of development of the extrusion process of metals and alloys are indicated.

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FEM Numerical and Experimental Work on Extrusion Welding of 7021 Aluminum Alloy

Cited by 4 publications

References 31 publications

Effects of Zn, Mg, and Cu Content on the Properties and Microstructure of Extrusion-Welded Al–Zn–Mg–Cu Alloys

Effects of Zn, Mg, and Cu Content on the Properties and Microstructure of Extrusion-Welded Al–Zn–Mg–Cu Alloys

Advances in the Experimentation and Numerical Modeling of Material Joining Processes

Latest advances in extrusion processes of light metals

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