Results 31 to 40 of about 194,554 (238)

Thermomechanical Fatigue and Creep–Fatigue Interaction of Inconel 718 Additively Manufactured by Laser Beam Powder Bed Fusion

Advanced Engineering Materials, EarlyView.
Thermomechanical fatigue tests of laser beam powder bed fusion (PBF‐LB) Inconel 718 show that the additively manufactured material reaches almost the lifetimes of conventionally‐rolled material under no‐dwell conditions. Introducing dwell times at the maximum temperature markedly reduces the lifetimes due to pronounced grain boundary sliding associated
Stefan Guth, Tomáš Babinský, Jan Lars Riedel, Wen Hao Kan, Aijun Huang, Martin Heilmaier, Ivo Šulák   +6 more
wiley   +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

Evidence for the Onset of Deconfinement from Longitudinal Momentum Distributions? Observation of the Softest Point of the Equation of State [PDF]

, 2005
We analyze longitudinal pion spectra from E_lab= 2AGeV to \sqrt s_NN=200GeV within Landau's hydrodynamical model. From the measured data on the widths of the pion rapidity spectra, we extract the sound velocity c_s in the early stage of the reactions. It
Bleicher, Marcus
core   +2 more sources

Evaluating Energy Absorption Performance of Filled Lattice Structures

Advanced Engineering Materials, EarlyView.
Maximum stress must be considered to robustly evaluate energy absorber designs. This approach was applied to compare all types of absorbers in a single Ashby diagram and determine the utility of filling lattice voids with a second material. High‐performance fillers can improve the performance of lattices that are limited by buckling or catastrophic ...
Christian Bonney, William P. King, Iwona Jasiuk   +2 more
wiley   +1 more source

Structural instability associated with the tilting of CuO6 octahedra in La2-xSrxCuO4

, 1999
Comprehensive inelastic neutron-scattering measurements were performed to study the soft optical phonons in La2-xSrxCuO4 at x=0.10, 0.12 and 0.18. We found at x=0.18 that the softening of Z-point phonon, suggesting incipient structural transition from ...
Axe J. D., Bianconi A., Billinge S. J. L., Billinge S. J. L., Birgeneau R. J., Birgeneau R. J., Böni P., Büchner B., Büchner B., Cheong S.-W., Kataoka M., Kimura H., Lee C. H., Lee C. H., Nakamura Y., Nohara M., Shapiro S. M., Shapiro S. M., Shirane G., Suzuki T., Takagi H., Takayama-Muromachi E., Thurston T. R., Ting Wu, Ting Wu, Toyota N., Yamada K., Yamada K., Yoshizawa H.   +28 more
core   +1 more source

Rafting of Ni‐Based Superalloys Under Multiaxial Load as Understood by Phase‐Field Simulations and Critical Experiments

Advanced Engineering Materials, EarlyView.
Phase‐field simulations coupled with dislocation‐density‐based crystal plasticity modeling reproduce γ′ rafting behavior in single‐crystal Ni‐based superalloys under varied loading conditions. The model captures both macroscopic creep and microscopic morphology evolution, with results matching high‐temperature creep experiments.
Micheal Younan, David Bürger, Gunther Eggeler, Oleg Shchyglo, Ingo Steinbach, Muhammad Adil Ali   +5 more
wiley   +1 more source

Evidence for softening of first-order transition in 3D by quenched disorder

, 2001
We study by extensive Monte Carlo simulations the effect of random bond dilution on the phase transition of the three-dimensional 4-state Potts model which is known to exhibit a strong first-order transition in the pure case.
A. Aharony, A. Roder, A. Roder, A.B. Harris, A.W.W. Ludwig, A.W.W. Ludwig, A.W.W. Ludwig, B. Derrida, Bertrand Berche, C. Chatelain, C. Chatelain, C.D. Lorenz, Christophe Chatelain, F.Y. Wu, G. Jug, G.S. Iannacchione, H.G. Ballesteros, H.G. Ballesteros, H.O. Heuer, J.L. Jacobsen, J.S. Wang, K. Uzelac, L. Schwenger, M. Aizenman, M. Picco, M.A. Lewis, Pierre Emmanuel Berche, R. Folk, R.H. Swendsen, S. Chen, S. Chen, S. Wiseman, T. Bellini, T. Olson, U. Glaus, U. Wolff, Vl. Dotsenko, W. Janke, W. Janke, Wolfhard Janke, X.l. Wu, Y. Imry   +41 more
core   +2 more sources

Additive Manufacturing of Continuous Fibre Reinforced Composites: Process, Characterisation, Modelling, and Sustainability

Advanced Engineering Materials, EarlyView.
Additive manufacturing provides precise control over the placement of continuous fibres within polymer matrices, enabling customised mechanical performance in composite components. This article explores processing strategies, mechanical testing, and modelling approaches for additive manufactured continuous fibre‐reinforced composites.
Cherian Thomas, Amir Hosein Sakhaei
wiley   +1 more source

Topological quantum transition driven by charge-phonon coupling in the Haldane Chern insulator

, 2019
In condensed matter physics many features can be understood in terms of their topological properties. Here we report evidence of a topological quantum transition driven by the charge-phonon coupling in the spinless Haldane model on a honeycomb lattice, a
Cangemi, L. M., Cataudella, V., De Filippis, G., Mishchenko, A. S., Nagaosa, N.   +4 more
core   +1 more source

Phase Field Failure Modeling: Brittle‐Ductile Dual‐Phase Microstructures under Compressive Loading

Advanced Engineering Materials, EarlyView.
The approach by Amor and the approach by Miehe and Zhang for asymmetric damage behavior in the phase field method for fracture are compared regarding their fitness for microcrack‐based failure modeling. The comparison is performed for the case of a dual‐phase microstructure with a brittle and a ductile constituent.
Jakob Huber, Jan Torgersen, Ewald Werner
wiley   +1 more source