Results 41 to 50 of about 965 (253)

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

Microstructure and Mechanical Properties of Nb–Ti–V–Zr Refractory Medium-Entropy Alloys

Frontiers in Materials, 2020
Low-density refractory medium entropy alloys (NbTiVZr, Nb0.5TiVZr, and NbTiV) were produced by vacuum arc melting, then heat-treated at 1,200°C for 1 h, water quenched, and finally annealed at 500°C for 0.5 h.
Yuefei Jia, Liangbo Zhang, Peiyou Li, Xindi Ma, Long Xu, Shiwei Wu, Yandong Jia, Gang Wang   +7 more
doaj   +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

Investigation of Thermo‐Chemical Processes in Commercial MgO‐C Refractory Bricks With and Without MgO‐C Recyclate at Elevated Temperatures

Advanced Engineering Materials, EarlyView.
This study investigates thermo‐chemical processes during high‐temperature testing of two commercial MgO‐C brick grades, one containing 47.5 wt.% MgO‐C recyclate. Using ETV, DTA/TG‐MS, XRD, and SEM/EDS/EBSD, mechanisms such as carbothermal reduction of magnesia, impurity incorporation into the secondary MgO surface layer, and calcium‐rich phase ...
Alexander Schramm, Jana Hubálková, Christian Schimpf, Thomas Schemmel, Christos G. Aneziris, Anja Weidner, Horst Biermann   +6 more
wiley   +1 more source

Research on Performance Prediction Method of Refractory High-Entropy Alloy Based on Ensemble Learning

Metals
Due to the huge component space of refractory high-entropy alloy, the traditional, experimental “trial and error method” can not meet the design requirements.
Guangxiang Tian, Pingluo Zhao, Yangwei Wang, Hongmei Zhang, Liying Xing, Xingwang Cheng   +5 more
doaj   +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

VNbCrMo refractory high-entropy alloy for nuclear applications

International Journal of Refractory Metals and Hard Materials, 2023
يتم البحث عن سبائك حرارية عالية الانتروبي (RHEAs) ذات نقاط انصهار عالية ومقطع عرضي منخفض امتصاص النيوترونات لمفاعلات الانشطار والاندماج من الجيل الرابع. تم استخدام أداة فحص حسابية عالية الإنتاجية، البحث عن السبائك والتنبؤ بها (ASAP)، لتحديد مرشحي RHEA الواعدين من أكثر من مليون تركيبة رباعية العناصر. تمت دراسة VNbCrMo RHEA المختارة من قبل CALPHAD للتنبؤ
P.A. Ferreirós, Sophia O. von Tiedemann, N. Parkes, D. Gurah, D.J.M. King, P. Norman, Mark R. Gilbert, Alexander J. Knowles   +7 more
openaire   +3 more sources

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