Effect of surface oxide layers in solid-state welding of aluminium alloys – review

Zlatanović, Danka Labus; Bergmann, Jean Pierre; Baloš, Sebastian; Hildebrand, Jörg; Bojanic-Sejat, Mirjana; Goel, Saurav

doi:10.1080/13621718.2023.2165603

Cited by 15 publications

(2 citation statements)

References 135 publications

(243 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This movement occurs due to the random thermal motion of particles and is driven by the tendency of system to achieve thermodynamic equilibrium. Diffusion plays a critical role in several important processes, such as heat treatment [1], hot working [2], solidstate phase transformations [3], powder metallurgy [4], welding [5], and thermochemical treatment [6,7]. During these processes, diffusion affects the evolution of the microstructure of and mechanical properties of materials.…”

Section: Introductionmentioning

confidence: 99%

Investigation of the Effect of Stress on Oxygen Diffusion in Pure Titanium Using a Phase-Field Model

Wang,

Zhang,

Yang

2024

Materials

View full text Add to dashboard Cite

Diffusion plays a vital role during the fabrication of many materials. It is a well-known fact that stress can influence diffusion behavior. In order to optimize material processing techniques, a quantitative evaluation of the effect of stress on diffusion is essentially required. By analyzing the free energy change in a Ti-O system during diffusion, a phase-field model was developed to address this issue. Using this model, the diffusion of oxygen atoms in pure titanium under different stress states was investigated. It was observed that the true equilibrium concentration of oxygen was proportional to its hydrostatic pressure. Tensile stress can increase the oxygen concentration. This raise in concentration decreased with temperature. However, the promotion of diffusion can be attained in deeper regions at a higher temperature. On the contrary, compressive stress inhibited the diffusion of oxygen in pure titanium. Under a certain compressive stress, the decrease in the oxygen concentration at the surface layer was more significant at a lower temperature, while a decrease could be observed at a deeper distance from the surface at a higher temperature. A thermodynamic explanation of the effect of stress on diffusion was given based on the proposed phase-field model.

show abstract

Section: Introductionmentioning

confidence: 99%

Investigation of the Effect of Stress on Oxygen Diffusion in Pure Titanium Using a Phase-Field Model

Wang,

Zhang,

Yang

2024

Materials

View full text Add to dashboard Cite

show abstract

“…Consequently, the challenge of establishing the improved joining technologies for aluminium and its alloys with suitable weld characteristics and lowest energy consumption has emerged [2,3]. However, the joining of aluminium and its alloys, with solid-state welding techniques is demanding due to the chemically stable oxide layer on the top and at the surface of the sheet before joining, as a consequence of the reaction between aluminium and atmospheric oxygen [4].…”

Section: Introductionmentioning

confidence: 99%

Influence of Strain Rate on Metallurgical and Mechanical Properties of Friction Stir Spot Welded Aluminium Joints

Labus Zlatanović,

Bergmann,

Baloš

et al. 2023

Adv.Tech&Mat.

View full text Add to dashboard Cite

Nowadays, the substitution of copper with aluminium is widely pursued in order to save weight and material costs, for battery components and wire connectors. Additionally, cost reductions can be further enhanced with effective reduction of energy consumption through efficient manufacturing. Therefore, friction stir spot welding as a solid-state welding technique is a potential choice with low energy demands and high joining performances. However, the joining of aluminium and its alloys with solid-state welding techniques is still a challenging task due to a persistent and chemically stable aluminium oxide layer formed at the sheets prior to the welding, due to the reaction between aluminium and atmospheric oxygen. In this paper, the influence of strain rate induced during friction stir spot welding process on the metallurgical, mechanical and electrical properties of friction stir spot welding of AA 5754-H111 was studied. The strain rate was calculated according to the rotational speed of the tool and the effective (average) radius and depth of the stir zone. It was observed that the specimens welded with a lower strain rate endured a 15 % higher average strain failure load compared to the specimens welded at a higher share rate. The microhardness profiles of the specimens obtained at low strain rates imply strain hardening mechanisms in the weld zone, while the microhardness of specimens welded at high strain rates expressed thermal softening. It was also found that the friction welded sheets, regardless of the strain rate, show increased electrical resistance compared to the base material, however, it decreases with an increase in strain rate. Microstructural analysis reveals a stress-induced metallurgical transformation in the narrow zone around the weld-faying interface.

show abstract

Optimization of welding parameters and microstructure analysis of low frequency vibration assisted SMAW butt welded joints

Ranjan,

Jha

2023

Int J Interact Des Manuf

View full text Add to dashboard Cite

Effect of surface oxide layers in solid-state welding of aluminium alloys – review

Cited by 15 publications

References 135 publications

Investigation of the Effect of Stress on Oxygen Diffusion in Pure Titanium Using a Phase-Field Model

Investigation of the Effect of Stress on Oxygen Diffusion in Pure Titanium Using a Phase-Field Model

Influence of Strain Rate on Metallurgical and Mechanical Properties of Friction Stir Spot Welded Aluminium Joints

Optimization of welding parameters and microstructure analysis of low frequency vibration assisted SMAW butt welded joints

Contact Info

Product

Resources

About