Results 41 to 50 of about 119,471 (294)

Lattice vibrations and structural instability in Cesium near the cubic to tetragonal transition

, 2000
Under pressure cesium undergoes a transition from a high-pressure fcc phase (Cs-II) to a collapsed fcc phase (Cs-III) near 4.2GPa. At 4.4GPa there follows a transition to the tetragonal Cs-IV phase.
Andersen O K, Born M, Christensen N E, Christensen N E, Hall H T, O Jepsen, Takemura K, Vosko S H, Y Kong   +8 more
core   +2 more sources

Hot wear of single phase fcc materials [PDF]

, 2021
The severe sliding abrasion of single-phase metallic materials is a complex issue with a gaining importance in industrial applications. Different materials with different lattice structures react distinctly to stresses, as the material reaction to wear of counter and base body is mainly determined by the deformation behavior of the base body.
Berger, Aaron (Dr.-Ing.), Walter, Maximilian (Dr.-Ing.), Benito, Santiago Manuel (Dr.-Ing.), Weber, Sebastian (Prof. Dr.-Ing.)   +3 more
openaire  

Elinvar Materials: Recent Progress and Challenges

Advanced Engineering Materials, EarlyView.
Elinvar materials, exhibiting temperature‐invariant elastic modulus, are critical for precision instruments and emerging technologies. This article reviews recent progress in the field, with a focus on the anomalous thermoelastic behavior observed in key material systems.
Wenjie Li, Yang Ren
wiley   +1 more source

High-pressure phase transition in 3-D printed nanolamellar high-entropy alloy by imaging and simulation insights

Scientific Reports
We report on the high-resolution imaging and molecular dynamics simulations of a 3D-printed eutectic high-entropy alloy (EHEA) Ni40Co20Fe10Cr10Al18W2 consisting of nanolamellar BCC and FCC phases.
Andrew D. Pope, Wen Chen, Hangman Chen, Penghui Cao, Armenuhi Yeghishyan, Maksym Zhukovskyi, Khachatur Manukyan, Yogesh K. Vohra   +7 more
doaj   +1 more source

Multimodal Mechanical Testing of Additively Manufactured Ti6Al4V Lattice Structures: Compression, Bending, and Fatigue

Advanced Engineering Materials, EarlyView.
In this experimental study, the mechanical properties of additively manufactured Ti‐6Al‐4V lattice structures of different geometries are characterized using compression, four point bending and fatigue testing. While TPMS designs show superior fatigue resistance, SplitP and Honeycomb lattice structures combine high stiffness and strength. The resulting
Klaus Burkart, Jonas Schmidt, Anastasiya Toenjes, Johanna Eisenträger   +3 more
wiley   +1 more source

Fcc-bcc transition for Yukawa interactions determined by applied strain deformation

, 2004
Calculations of the work required to transform between bcc and fcc phases yield a high-precision bcc-fcc transition line for monodisperse point Yukawa (screened-Couloumb) systems.
E. C. Whipple, E. Verwey, F. Milstein, F. Reif, G. Dupont, M. P. Allen, Mark O. Robbins, N. W. Ashcroft, R. G. Larson, Robert S. Hoy, Y. Monovoukas   +10 more
core   +1 more source

Contrasting mechanical behavior in precipitation hardenable AlXCoCrFeNi high entropy alloy microstructures: Single phase FCC vs. dual phase FCC-BCC

Materials Science and Engineering: A, 2019
Abstract AlxCoCrFeNi is a prominent high entropy alloy system with varying crystal structure from FCC to BCC depending on aluminum content. The mechanical behavior of Al0.7CoCrFeNi with dual phase FCC+BCC microstructure has been compared with that of single phase FCC Al0.3CoCrFeNi.
Sindhura Gangireddy, Bharat Gwalani, Vishal Soni, Rajarshi Banerjee, Rajiv S. Mishra   +4 more
openaire   +2 more sources

Mechanism of the fcc-to-hcp phase transformation in solid Ar [PDF]

The Journal of Chemical Physics, 2017
We present an atomistic description of the fcc-to-hcp transformation mechanism in solid argon (Ar) obtained from transition path sampling molecular dynamics simulation. The phase transition pathways collected during the sampling for an 8000-particle system reveal three transition types according to the lattice deformation and relaxation details. In all
Bingxi Li, Guangrui Qian, Artem R. Oganov, Salah Eddine Boulfelfel, Roland Faller   +4 more
openaire   +5 more sources

A Thermodynamic 3D Model for the Simulation of Diffusion‐Controlled Alloying Processes in Heterogeneous Material Structures

Advanced Engineering Materials, EarlyView.
A numerical model resulting from irreversible thermodynamics for describing transport processes is introduced, focusing on thermodynamic activity gradients as the actual driving force for diffusion. Implemented in CUDA C++ and using CalPhaD methods for determining the necessary activity data, the model accurately simulates interdiffusion in aluminum ...
Ulrich Holländer, Leonhard Holländer, André Langohr, Hans Jürgen Maier   +3 more
wiley   +1 more source

Pressure induced irreversible phase transformation in an ordered high-entropy alloy

Scientific Reports
We report on a pressure induced irreversible phase transformation in an ordered eutectic high-entropy alloy (EHEA) AlCoCrFeNi2.1. The suction cast sample was synthesized by arc melting of raw elements resulting in an ordered B2 and FCC phase mixture for ...
Andrew D. Pope, Bijun Xie, Raimundas Sereika, Wuxian Yang, Wen Chen, Hangman Chen, Penghui Cao, Yogesh K. Vohra   +7 more
doaj   +1 more source