Results 61 to 70 of about 32,641 (319)

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

A novel ZrNbMoTaW refractory high-entropy alloy with in-situ forming heterogeneous structure

Materials Science & Engineering: A, 2021
NbMoTaW-based refractory high-entropy alloys (RHEAs) are now at the research frontier of advanced metallic materials due to outstanding mechanical properties at elevated temperatures.
Tianxin Li, Wenna Jiao, Junwei Miao, Yiping Lu, E. Guo, Tongmin Wang, Tingju Li, P. Liaw   +7 more
semanticscholar   +1 more source

First-principles calculation of phase equilibrium of V-Nb, V-Ta, and Nb-Ta alloys [PDF]

, 2012
In this paper, we report the calculated phase diagrams of V-Nb, V-Ta, and Nb-Ta alloys computed by combining the total energies of 40–50 configurations for each system (obtained using density functional theory) with the cluster expansion and Monte Carlo ...
Panigrahi, B. K., Ravi, C., Valsakumar, M. C., van de Walle, Axel   +3 more
core   +1 more source

Electrical Conductivities of Conductors, Semiconductors, and Their Mixtures at Elevated Temperatures

Advanced Engineering Materials, EarlyView.
This article presents a comprehensive review of temperature‐dependent electrical conductivity data for multiple material classes at elevated temperatures, highlighting a persistent conductivity gap between metals and semiconductors in the range of 102$\left(10\right)^{2}$– 107$\left(10\right)^{7}$ S/m. Metal–ceramic irregular metamaterials are proposed
Valentina Torres Nieto, Marcia A. Cooper
wiley   +1 more source

Shear strength of a refractory high entropy alloy MoNbTaVW under high pressure [PDF]

AIP Advances
Radial X-ray diffraction (R-XRD) was performed in situ using a Panoramic Diamond Anvil Cell on the refractory high entropy alloy MoNbTaVW. The lattice parameters were determined through a Le Bail fit using a body centered cubic (BCC) lattice of symmetry ...
Hunter Kantelis, Seth Iwan, Cheng-Chien Chen, Kallol Chakrabarty, Melissa Sims, Yogesh K. Vohra   +5 more
doaj   +1 more source

Study on irradiation effects of refractory bcc high-entropy alloy

Nuclear Materials and Energy, 2022
We developed body-centered cubic refractory high-entropy alloys, MoNbTaTi, MoNbTaW, and MoNbTaTiW, and explored their microstructure, and mechanical properties in order to develop a new high-irradiation resistance material suitable for fusion reactor ...
Yun Zong, Naoyuki Hashimoto, Hiroshi Oka
doaj   +1 more source

Entropy and diffuse scattering: comparison of NbTiVZr and CrMoNbV

, 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

Nanostructured multielement (TiHfZrNbVTa)N coatings before and after implantation of N+ ions (1018 cm 2 ): Their structure and mechanical properties [PDF]

, 2016
Multielement high entropy alloy (HEA) nitride (TiHfZrNbVTa)N coatings were deposited by vacuum arc and their structural and mechanical stability after implantation of high doses of N+ ions, 1018 cm 2 , were investigated. The crystal structure and phase
Abadias, G., Beresnev, V.M., Bondar, Oleksandr Viacheslavovych, Borba, S.O., Drodziel, P., Kassenova, L.G., Konarski, P., Plotnikov, S.V., Pohrebniak, Oleksandr Dmytrovych, Бондар, Олександр В`ячеславович, Бондарь, Александр Вячеславович, Погребняк, Александр Дмитриевич, Погребняк, Олександр Дмитрович   +12 more
core   +1 more source

A Knowledge‐Based Approach for Understanding and Managing Additive Manufacturing Data

Advanced Engineering Materials, EarlyView.
Additive manufacturing processes generate a large amount of data. Effectively managing, understanding, and retrieving information from this data remains a major challenge. Therefore, we propose an ontology‐based approach to integrate heterogeneous data, enable semantic queries, and support decision‐making.
Mina Abd Nikooie Pour, Prithwish Tarafder, Anton Wiberg, Huanyu Li, Johan Moverare, Patrick Lambrix   +5 more
wiley   +1 more source

Thermal Softening Measurements of Refractory High-Entropy Alloys

Materials
Home-built equipment will be presented able to measure the thermal expansion (with a flat indenter) and indentation depth (with a pointed indenter) up to 1100 °C. In dilatometer mode, the allotropic phase transformations can be studied. For hardness, a Rockwell-type measurement is adopted.
Ottó K. Temesi, Albert Karacs, Nguyen Q. Chinh, Lajos K. Varga   +3 more
openaire   +2 more sources