Results 71 to 80 of about 107,666 (304)

Prominent bulk pinning effect in the MgB_2 superconductor

, 2001
We report the magnetic-field dependence of the irreversible magnetization of the recently discovered binary superconductor MgB$_{2}$. For the temperature region of $T< 0.9T_c$, the contribution of the bulk pinning to the magnetization overwhelms that of ...
C. U. Jung, C. U. Jung, C.D. Dewhurst, C.P. Bean, C.P. Bean, D.C. Larbalestier, D.K. Finnemore, G. Rubio-Bollinger, J. Nagamatsu, J.H.P. Watson, J.S. Slusky, Kijoon H. P. Kim, Min-Seok Park, Mun-Seog Kim, P.C. Canfield, S. Y. Lee, S.L. Bud’ko, Sung-Ik Lee, W. N. Kang, W.A. Feitz, Z. Hao   +20 more
core   +1 more source

Enhancing Strength and Electrical Conductivity in Al–Zr–Sc Conductor Alloys Through Sn and Sr Microalloying and Two‐Step Aging Treatment

Advanced Engineering Materials, EarlyView.
Trace additions of Sn and Sr combined with a two‐step aging treatment are shown to enhance the microstructure and performance of Al–Zr–Sc conductor alloys. Strength and electrical conductivity increase concurrently through accelerated precipitation of fine Al3(Sc, Zr) precipitates and improved dislocation resistance, offering a cost‐effective pathway ...
Quan Shao, Emad M. Elgallad, Alexandre Maltais, X.‐Grant Chen   +3 more
wiley   +1 more source

Flux-pinning behaviors and mechanism according to dopant level in (Fe, Ti) particle-doped $$\text {MgB}_2$$ MgB 2 superconductor

Scientific Reports, 2021
We have studied flux-pinning effects of $$\text {MgB}_2$$ MgB 2 superconductor by doping (Fe, Ti) particles of which radius is 163 nm on average. 5 wt.% (Fe, Ti) doped $$\text {MgB}_2$$ MgB 2 among the specimens showed the best field dependence of ...
H. B. Lee, G. C. Kim, Young Jin Shon, Dongjin Kim, Y. C. Kim   +4 more
doaj   +1 more source

Phenomenological and Physically Based Modeling of Flow Stress and Strengthening Mechanism of Inconel 718

Advanced Engineering Materials, EarlyView.
Nickel‐based alloys are widely used in high‐temperature applications due to their excellent mechanical strength and oxidation resistance. However, properties such as high‐temperature strength and pronounced work‐hardening make them difficult to machine.
Soheil Rooein, Oliver Schenk, Christoph Broeckmann   +2 more
wiley   +1 more source

Ising model with periodic pinning of mobile defects

, 2003
A two-dimensional Ising model with short-range interactions and mobile defects describing the formation and thermal destruction of defect stripes is studied. In particular, the effect of a local pinning of the defects at the sites of straight equidistant
A. Kampf, B.N.J. Persson, C.H. Chen, D.J. Liu, D.R. Nelson, F. Krüger, F. Krüger, H.J. Schulz, J. Villain, J. Zaanen, J. Zaanen, J.E. Hoffman, J.M. Tranquada, J.R. Schrieffer, M. Holtschneider, P. Minnhagen, R. Bundschuh, T.L. Einstein, T.W. Burkhardt, U. Ammerahl, V.L. Pokrovsky, W. Selke, W. Selke, W. Selke, W. Selke, W. Selke   +25 more
core   +1 more source

Influence of an Oxygen‐Free Atmosphere on Diamond‐Single‐Grain Scratching of Ti–6Al–4V

Advanced Engineering Materials, EarlyView.
Single‐grain scratching of Ti–6Al–4V is investigated under controlled, oxygen‐free, and ambient atmospheres using a novel experimental setup with in situ high‐speed imaging. The approach enables direct observation of chip formation and adhesion under suppressed oxidation.
Berend Denkena, Benjamin Bergmann, Michael Zenger   +2 more
wiley   +1 more source

Critical depinning force and vortex lattice order in disordered superconductors

, 2000
We simulate the ordering of vortices and its effects on the critical current in superconductors with varied vortex-vortex interaction strength and varied pinning strengths for a two-dimensional system.
A.-Ch. Shi, A.B. Kolton, A.E. Koshelev, A.I. Larkin, C. J. Olson, C. Reichhardt, C. Zeng, C.J. Olson, D.G. Grier, G. Blatter, G. Ravikumar, G. Ravikumar, H.J. Jensen, J. Shi, K. Ghosh, K. Moon, M.C. Faleski, M.C. Hellerqvist, M.J. Higgins, N. Grønbech-Jensen, P.L. Gammel, S. Bhattacharya, S. Bhattacharya, S. Kokkaliaris, S. Ryu, S. Sarkar, S. Spencer, S.S. Banerjee, W. Henderson, Y. Paltiel   +29 more
core   +1 more source

Effect of the Starting Point of Half-Pin Insertion on the Insertional Torque of the Pin at the Tibia

Yonsei Medical Journal, 2015
The authors have observed a failure to achieve secure fixation in elderly patients when inserting a half-pin at the anteromedial surface of the tibia. The purpose of this study was to compare two methods for inserting a half-pin at tibia diaphysis in elderly patients.Twenty cadaveric tibias were divided into Group C or V.
Kim, Sung-Jae, Kim, Sung-Hwan, Kim, Young-Hwan, Chun, Yong-Min   +3 more
openaire   +3 more sources

Investigation of Oxygen‐Free Wetting Behavior of Aluminum on Copper via Molecular Dynamics Simulations and Experiments

Advanced Engineering Materials, EarlyView.
The wettability of aluminum droplets (Al) on different copper substrates (Cu), where liquid Al spreads on solid Cu surfaces to form a liquid–solid interface, is studied numerically and experimentally. The experimental and numerical results show good agreement in the fast‐spreading regime.
Shan Lyu, Timon Steinhoff, Finn‐Lennard Janthur, Sarah Seffer, Jörg Hermsdorf, Christian Klose, Ludger Overmeyer, Hans‐Jürgen Maier, Nina Merkert   +8 more
wiley   +1 more source

Strong pinning of vortices by antiferromagnetic domain boundaries in CeCo(In1−xCdx)5

New Journal of Physics, 2016
We have studied the isothermal magnetization $M(H)$ of CeCo( ${\mathrm{In}}_{1-x}$ Cd _x ) _5 with x  = 0.0075 and 0.01 down to 50 mK. Pronounced field-history dependent phenomena occur in the coexistence regime of the superconducting and ...
D-J Jang, L Pedrero, L D Pham, Z Fisk, M Brando   +4 more
doaj   +1 more source