Results 41 to 50 of about 68,328 (330)

Entropy Determination of Single-Phase High Entropy Alloys with Different Crystal Structures over a Wide Temperature Range

open access: yesEntropy, 2018
We determined the entropy of high entropy alloys by investigating single-crystalline nickel and five high entropy alloys: two fcc-alloys, two bcc-alloys and one hcp-alloy. Since the configurational entropy of these single-phase alloys differs from alloys
Sebastian Haas   +7 more
doaj   +1 more source

Entropy and diffuse scattering: comparison of NbTiVZr and CrMoNbV

open access: yes, 2015
The chemical disorder intrinsic to high entropy alloys inevitably creates diffuse scattering in their x-ray or neutron diffraction patterns. Through first principles hybrid Monte Carlo/molecular dynamics simulations of two BCC high entropy alloy forming ...
Widom, M.
core   +2 more sources

The Influence of Grain Boundaries on Crystal Structure and Tensile Mechanical Properties of Al0.1CoCrFeNi High-Entropy Alloys Studied by Molecular Dynamics Method

open access: yesCrystals, 2021
The mechanical properties of high-entropy alloys are superior to those of traditional alloys. However, the key problem of finding a strengthening mechanism is still challenging. In this work, the molecular dynamics method is used to calculate the tensile
Cuixia Liu, Rui Wang, Zengyun Jian
doaj   +1 more source

Mechanistic origin of high retained strength in refractory BCC high entropy alloys up to 1900K

open access: yes, 2019
The body centered cubic (BCC) high entropy alloys MoNbTaW and MoNbTaVW show exceptional strength retention up to 1900K. The mechanistic origin of the retained strength is unknown yet is crucial for finding the best alloys across the immense space of BCC ...
Curtin, William A., Maresca, Francesco
core   +1 more source

Free energy and vibrational entropy difference between ordered and disordered Ni3Al [PDF]

open access: yes, 1998
We have calculated free energy and vibrational entropy differences in Ni3Al between its equilibrium ordered structure and a disordered fcc solid solution.
Aguilar, J.   +5 more
core   +1 more source

Paracrystalline property of high-entropy alloys

open access: yesAIP Advances, 2013
Atomic structure models of six-component high-entropy alloys with body-centered cubic structure are successfully built according to the principle of maximum entropy for the first time.
Shaoqing Wang
doaj   +1 more source

Nanosized high-entropic materials based on HEA, design principles and synthesis methods

open access: yesФизико-химические аспекты изучения кластеров, наноструктур и наноматериалов, 2023
The principles of designing high-entropy alloys related to the selection of elements are analyzed. When selecting elements, a parametric approach is used, including chemical and topological parameters.
V.A. Polukhin   +3 more
doaj   +1 more source

Mapping the evolution of mitochondrial complex I through structural variation

open access: yesFEBS Letters, EarlyView.
Respiratory complex I (CI) is crucial for bioenergetic metabolism in many prokaryotes and eukaryotes. It is composed of a conserved set of core subunits and additional accessory subunits that vary depending on the organism. Here, we categorize CI subunits from available structures to map the evolution of CI across eukaryotes. Respiratory complex I (CI)
Dong‐Woo Shin   +2 more
wiley   +1 more source

Structural insights into lacto‐N‐biose I recognition by a family 32 carbohydrate‐binding module from Bifidobacterium bifidum

open access: yesFEBS Letters, EarlyView.
Bifidobacterium bifidum establishes symbiosis with infants by metabolizing lacto‐N‐biose I (LNB) from human milk oligosaccharides (HMOs). The extracellular multidomain enzyme LnbB drives this process, releasing LNB via its catalytic glycoside hydrolase family 20 (GH20) lacto‐N‐biosidase domain.
Xinzhe Zhang   +5 more
wiley   +1 more source

The formation of sigma phase in the CoCrFeNi high-entropy alloys

open access: yesMaterials Research Express, 2021
The as-cast CoCrFeNi high-entropy alloys show simple FCC structure and outstanding deformation ability at room temperature. Respectively, after 50% of deforming at room temperature and annealing at intermediate temperature range of 600 °C–800 °C for 2 h,
X J Wang, M Xu, N Liu, L X Liu
doaj   +1 more source

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