Mechanical behavior and forming of commercially-pure niobium sheet

Kim, Minki; Chen, Kelin; Carriere, Paul; Matavalam, Nanda Gopal; Penney, James; Kutsaev, Sergey; Korkolis, Yannis P.

doi:10.1016/j.ijsolstr.2022.111770

Cited by 5 publications

(3 citation statements)

References 43 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In addition, a disc compression test was conducted, which provided the TD strain over RD strain ratio of about 1.15 under equibiaxial tension, again manifesting a strong anisotropy. Details about the two complementary tests can be found in [13].…”

Section: Mechanical Characterization Experimentsmentioning

confidence: 99%

“…This could be partially attributed to the very high R-values in RD and TD. The "plane-strain" tension tests also showed some deviation from the ideal zero-transverse strain case, with an trasverse/axial strain ratio of about -1/3, hence in this work they are considered biaxial tension tests, instead (details can be found in [13]). This is also partially because of the high R-value in RD and TD, and the unsuitable geometry used for this material (although the same geometry was highlily statisfactory for other materials [3,4,6,[17][18][19]).…”

Section: Achievements and Trends In Materials Formingmentioning

confidence: 99%

“…This strong hardening behavior is not common for typical sheet metal such as Steel and Aluminum. A possible explanation is that this material exhibits strong strain-rate sensitivity [13,20,21], which is not included in the model adopted, and could effect the results [22]. For example, Peroni and Scapin [23] conducted tensile tests of a Nb sheet at different strain-rates from 10 -3 /s to 10 3 /s, and the material responses were found to be strongly rate sensitive.…”

Section: Materials Hardeningmentioning

confidence: 99%

See 2 more Smart Citations

Deep-Drawing of Commercially-Pure Niobium Sheet

Chen

Kim

Carriere

et al. 2022

KEM

Self Cite

View full text Add to dashboard Cite

Pure Niobium is a material of interest for high-energy-physics applications including superconducting accelerators. Cold-rolled sheets of Nb exhibit significant plastic anisotropy. Here we report on the mechanical and forming properties of 99.95% pure, 1.02 mm thin, cold-rolled sheet. Uniaxial tension, biaxial tension and disc compression experiments are performed, the first two at multiple angles to the rolling direction of the sheet. The material is very ductile (uniform elongation ~30%), and exhibits significant plastic anisotropy (e.g., the R-values range from 1.2 in 45o to 2.5 in 90o). The results are used to calibrate the Yld2000-2D anisotropic yield function, with an exponent of 6 as Nb is BCC. They are also used to extract the hardening curve beyond the limit load in uniaxial tension. Deep-drawing experiments are performed using a die of 27.6 mm dia. and a punch of 25.4 mm dia. Blanks of various diameters are used. The successfully drawn cups exhibit significant earing. The experiments are simulated using Abaqus/Standard and shell elements. It is shown that a properly calibrated material model enables the numerical simulations to match the experiments.

show abstract

Section: Mechanical Characterization Experimentsmentioning

confidence: 99%

Section: Achievements and Trends In Materials Formingmentioning

confidence: 99%

Section: Materials Hardeningmentioning

confidence: 99%

See 1 more Smart Citation

Deep-Drawing of Commercially-Pure Niobium Sheet

Chen

Kim

Carriere

et al. 2022

KEM

Self Cite

View full text Add to dashboard Cite

show abstract

Inverse identification of plastic anisotropy through multiple non-conventional mechanical experiments

Zhang,

Yamanaka,

Cooreman

et al. 2023

International Journal of Solids and Structures

View full text Add to dashboard Cite

Superconducting microwave cavities and qubits for quantum information systems

Krasnok,

Dhakal,

Fedorov

et al. 2024

Applied Physics Reviews

View full text Add to dashboard Cite

Superconducting microwave cavities featuring ultrahigh Q-factors, which measure the efficiency of energy storage in relation to energy loss in a system, are revolutionizing quantum computing by providing long coherence times exceeding 1 ms, crucial for the development of scalable multi-qubit quantum systems with low error rates. In this work, we provide an in-depth analysis of recent advances in ultrahigh Q-factor cavities, integration of Josephson junction-based qubits, and bosonic-encoded qubits in 3D cavities. We examine the sources of quantum state dephasing caused by damping and noise mechanisms in cavities and qubits, highlighting the critical challenges that need to be addressed to achieve even higher coherence times. We critically survey the latest progress made in implementing single 3D qubits using superconducting materials, normal metals, and multi-qubit and multi-state quantum systems. Our work sheds light on the promising future of this research area, including novel materials for cavities and qubits, modes with nontrivial topological properties, error correction techniques for bosonic qubits, and new light–matter interaction effects.

show abstract

Mechanical behavior and forming of commercially-pure niobium sheet

Cited by 5 publications

References 43 publications

Deep-Drawing of Commercially-Pure Niobium Sheet

Deep-Drawing of Commercially-Pure Niobium Sheet

Inverse identification of plastic anisotropy through multiple non-conventional mechanical experiments

Superconducting microwave cavities and qubits for quantum information systems

Contact Info

Product

Resources

About