The Effect of Heat Treatment on the Mechanical Properties and Microstructure of Explosion Welded 6061 Aluminum Alloy

Wittman, R. H.; Lipkin, J.

doi:10.1007/978-1-4615-8696-8_41

Cited by 10 publications

(9 citation statements)

References 5 publications

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“…Optimum conditions for welding should be investigated for each material separately. For this, there are studies in the literature that created a limit map called "weldability window" [14,35,36]. Welding can only take place when the parameters are in the appropriate welding range.…”

Section: Resultsmentioning

confidence: 99%

“…350 V and 0.9 mm could not provide jet formation together. Jet is one of the basic criteria required for the formation of the source [14,27,34,36], and rather than being a stand-alone criterion, it emerges when optimum conditions are met with other entry conditions. At a 1.5 mm standoff distance, the distance between 350 V and metals could not create sufficient bonding (Figure 6i), the ideal connection was provided at 375 V (Figure 6j), and the connection was formed at 400 V and 425 V voltage values (Figure 6k,m), but a regular surface shape and contact along the entire surface could not be achieved.…”

Section: Resultsmentioning

confidence: 99%

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Aluminum Forming by Vaporizing Foil Actuator Welding

ÖNDER,

KÜLEKCİ

2023

Çukurova Üniversitesi Mühendislik Fakültesi Dergisi

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Aluminum, has a wide range of uses, from industry to medical industrial products such as automotive, defense-aviation, and space. Aluminium has become a preferred material in applications where weight needs to be reduced. It is also used as a material in metal cladding and shaping applications. However, the high thermal conductivity coefficient of aluminum may cause some difficulties in the production process. These difficulties due to thermal conductivity may not allow to manufacture of desired products. In this study formability of aluminum with vaporizing foil actuator welding (VFAW) has been investigated as an alternative process to the traditional and solid state welding processes. By using different voltage values and separation distance parameters, the effects of these parameters on the formability of aluminum and copper sheet metal pairs with VFAW were examined experimentally. Experimental data show that voltage value is an important parameter in the VFAW process where a DC capacitor is used. In the VFAW process, where a 375 V voltage value is used, it has been determined that welding occurs in processes performed with three different separation distances (0.4 mm- 0.9 mm -1.5 mm). It was determined that 0.4 mm and 0.9 mm separation distances were effective in joining Al/Cu metal sheets with 0.1 mm thickness.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Aluminum Forming by Vaporizing Foil Actuator Welding

ÖNDER,

KÜLEKCİ

2023

Çukurova Üniversitesi Mühendislik Fakültesi Dergisi

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“…The Lorentz force (F L ) from the interaction of the magnetic field with the induced currents makes pressures up to 2 GPa (70 T) on the workpiece, which makes it possible to perform its radial compression with hundreds of m/s velocities. To observe a high-quality joint, it is necessary that the impact velocity V i and the contact point velocity V c (Figure 1c) were within a certain range of values, known in the literature as the welding window [22][23][24].…”

Section: Basics Of Mpw Process and The Role Of Field-shapermentioning

confidence: 99%

Development of Multi-part Field-Shapers for Magnetic-Pulse Welding Using Nanostructured Cu-Nb Composite

Zaytsev,

Krutikov,

Spirin

et al. 2024

Preprint

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Magnetic pulse welding (MPW) employs high pulsed magnetic field to accelerate parts against each other thus forming an impact joining. Single-turn tool coils and field-shapers (FS) used in MPW operate under the most demanding conditions: a magnetic field of 40-50 T with a period of tens of microseconds. For conventional copper and bronze coils intense thermo-mechanical stresses lead to rapid degradation of the working bore. This work is aimed to improve the efficiency of field-shapers and focused on development of 2- and 4-slit FS with nanocomposite Cu 18Nb wire brazed as FS inner current-carrying layer. The measured ratio of magnetic field to discharge current was 56.3 and 50.6 T/MA for 2- and 4-slit FS respectively. FEM calculations of magnetic field generation showed its 6-9% and 3% variation for 2- and 4-slit FS respectively. The results of copper tube compression have shown an ovality of 27% and 7% for 2- and 4-slit FS respectively. The measured deviation of weld joining length was 11% and 1.4% in 2- and 4-slit FS respectively. Compared to the previous experiments on the whole steel inductor, the novel FS showed significantly better results in terms of efficiency and homogeneity of the magnetic field.

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“…The Lorentz force (F L ) generated from the interaction of the magnetic field with the induced currents creates pressures of up to 2 GPa (70 T) on the workpiece, which makes it possible to carry out its radial compression at velocities measuring hundreds of m/s. To achieve a high-quality joint, it is necessary that the impact velocity V i and the contact point velocity V c (Figure 1c) are within a certain range of values known in the literature as the welding window [22][23][24]. The radial compression of a cylindrical conducting tube can be described in a one-dimensional (axisymmetric) model using the following equation:…”

Section: The Basics Of the Mpw Process And The Role Of The Field-shapermentioning

confidence: 99%

Development of Multi-Part Field-Shapers for Magnetic Pulse Welding Using Nanostructured Cu-Nb Composite

Zaytsev,

Krutikov,

Spirin

et al. 2024

JMMP

View full text Add to dashboard Cite

Magnetic pulse welding (MPW) employs a strong pulsed magnetic field to accelerate parts against each other, thus forming an impact joint. Single-turn tool coils and field-shapers (FSs) used in MPW operate under the most demanding conditions, such as magnetic fields of 40–50 T with periods lasting tens of microseconds. With the use of conventional copper and bronze coils, intense thermo-mechanical stresses lead to the rapid degradation of the working bore. This work aimed to improve the efficiency of field-shapers and focused on the development of two- and four-slit FSs with a nanocomposite Cu 18Nb brazed wire acting as an inner current-carrying layer. The measured ratios of the magnetic field to the discharge current were 56.3 and 50.6 T/MA for the two- and four-slit FSs, respectively. FEM calculations of the magnetic field generated showed variations of 6–9% and 3% for the two- and four-slit FSs, respectively. The ovality percentages following copper tube compression were 27% and 7% for the two- and four-slit FSs, respectively. The measured deviations in the weld-joining length were 11% and 1.4% in the two- and four-slit FSs, respectively. Compared to the previous experiments on an entirely steel inductor, the novel FS showed significantly better results in terms of its efficiency and the homogeneity of its magnetic field.

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The Effect of Heat Treatment on the Mechanical Properties and Microstructure of Explosion Welded 6061 Aluminum Alloy

Cited by 10 publications

References 5 publications

Aluminum Forming by Vaporizing Foil Actuator Welding

Aluminum Forming by Vaporizing Foil Actuator Welding

Development of Multi-part Field-Shapers for Magnetic-Pulse Welding Using Nanostructured Cu-Nb Composite

Development of Multi-Part Field-Shapers for Magnetic Pulse Welding Using Nanostructured Cu-Nb Composite

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