Development of material based on nanostructured Cu-Nb alloy for high magnetic field coils of microsecond duration

Zaytsev, Evgeny Yu.; Spirin, A. V.; Krutikov, V. I.; Paranin, S. N.; Zayats, S. V.; Kaigorodov, A. S.; Koleukh, D. S.; Kebets, Alexandr

doi:10.56761/efre2022.s4-o-038401

Cited by 2 publications

(3 citation statements)

References 16 publications

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“…In our case, after 10 pulses of a 40-50 T magnetic field, the was no significant evidence of surface destruction or plastic deformation. In detail the evolution of the Cu-Nb composite in similar magnetic fields can be found in our previous paper [32].…”

Section: Mpw Experimentsmentioning

confidence: 98%

“…The obtained Cu-Nb wire was brazed to the inner surface of the 30KhGSA FS body (Figure 5b) using PSr-40 hard solder (40% silver, 26% cadmium, 17% copper, 16.7% zinc, and 0.3% nickel), with the direction of the fibers oriented along the current lines (Figure 5c,d). After short-term annealing in air and brazing, the yield strength of the wire was reduced to 515 MPa, and the tensile strength was reduced to 890 MPa [32]. After brazing, the FS parts were milled and ground to the following final dimensions: an outer diameter of 30 mm and a length of 30 mm.…”

Section: Field-shaper Design and Testingmentioning

confidence: 99%

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

Zaytsev,

Krutikov,

Spirin

et al. 2024

JMMP

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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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Section: Mpw Experimentsmentioning

confidence: 98%

Section: Field-shaper Design and Testingmentioning

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

show abstract

“…The obtained parts from the Cu-Nb were brazed to the inner surface of 30KhGSA FS-body (Figure 5b) using PSr-40 hard solder (40% silver, 26% cadmium, 17% copper, 16.7% zinc, 0.3% nickel) with the direction of the fibers along the current lines (Figure 5c,d). After short-term annealing in air and brazing, the yield strength of the wire reduces to 515 MPa, the tensile strength to 890 MPa [32]. After the brazing the FS parts were milled and grinded to final dimensions: outer diameter 30 mm, length 30 mm; bore (channel) sizes: diameter is 9.5 mm and length is 12 mm, with 5 mm radius rounding of the transition to the coil working bore (Figure 6).…”

Section: Field-shaper Design and Testingmentioning

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.

show abstract

Development of material based on nanostructured Cu-Nb alloy for high magnetic field coils of microsecond duration

Cited by 2 publications

References 16 publications

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

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

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