Results 41 to 50 of about 120,215 (290)

The pseudomorphic to bulk fcc phase transition of thin Ni films on Pd(100)

, 2004
We have measured the transformation of pseudomorphic Ni films on Pd(100) into their bulk fcc phase as a function of the film thickness. We made use of x-ray diffraction and x-ray induced photoemission to study the evolution of the Ni film and its ...
Bruno, F., Cossaro, A., Cvetko, D., Floreano, L., Granozzi, G., Morgante, A., Petukhov, M., Rizzi, G. A., Sedona, F.   +8 more
core   +1 more source

Thermal stability and grain growth behavior of mechanically alloyed nanocrystalline Fe-Cu alloys [PDF]

, 1993
X-ray diffraction, transmission electron microscopy, and differential scanning calorimetry were used to study the thermal stability of highly supersaturated nanocrystalline FexCu100−x alloys (10~80.
Eckert, J., Holzer, J. C., Johnson, W. L.   +2 more
core   +1 more source

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

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

Evaluation of microstructure and mechanical property variations in AlxCoCrFeNi high entropy alloys produced by a high-throughput laser deposition method

, 2017
Twenty-one distinct AlxCoCrFeNi alloys were rapidly prepared by laser alloying an equiatomic CoCrFeNi substrate with Al powder to create an alloy library ranging x=0.15-1.32.
Borisevich, Albina, Flores, Katharine M., Gazquez, Jaume, Li, Mu, Mishra, Rohan   +4 more
core   +1 more source

Investigation of Laser Ablation and Brush Pre‐Treatments for AlCu Cold Roll Bonding in Oxygen‐Free Conditions

Advanced Engineering Materials, EarlyView.
It is shown that laser ablation pretreatment under oxygen‐free conditions enables copper–aluminium bonding at significantly lower deformation degrees and improved properties compared to mechanical brushing. Laser ablation further increases interface contact area and induces favourable residual stress states and microstructural compatibility ...
Khemais Barienti, Finn‐Lennard Janthur, Selina Raumel, Sascha Jan Zimmermann, Sarah Seffer, René Gustus, Sebastian Herbst, Marc C. Wurz, Ludger Overmeyer, Wolfgang Maus‐Friedrichs, Hans Jürgen Maier, Florian Nürnberger   +11 more
wiley   +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

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

Real-time observations of TRIP-induced ultrahigh strain hardening in a dual-phase CrMnFeCoNi high-entropy alloy. [PDF]

, 2020
Strategies involving metastable phases have been the basis of the design of numerous alloys, yet research on metastable high-entropy alloys is still in its infancy.
Chen, Sijing, Gludovatz, Bernd, Kim, Sang Jun, Oh, Hyun Seok, Park, Eun Soo, Ritchie, Robert O, Yu, Qian, Zhang, Ze   +7 more
core   +1 more source