Results 1 to 10 of about 991 (250)

Thermal Softening Measurements of Refractory High-Entropy Alloys. [PDF]

Materials (Basel)
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.
Temesi OK, Karacs A, Chinh NQ, Varga LK.
europepmc   +3 more sources

Atomistic simulations of dislocation mobility in refractory high-entropy alloys and the effect of chemical short-range order. [PDF]

Nat Commun, 2021
Refractory high entropy alloys hold big promise for elevated-temperature applications. Here the authors investigate the influence of short-range order on the mobility of dislocations in high-entropy alloys by large-scale molecular dynamics simulation ...
Yin S, Zuo Y, Abu-Odeh A, Zheng H, Li XG, Ding J, Ong SP, Asta M, Ritchie RO.   +8 more
europepmc   +2 more sources

Origin of age softening in the refractory high-entropy alloys. [PDF]

Sci Adv, 2023
Refractory high-entropy alloys (RHEAs) are emerging materials with potential for use under extreme conditions. As a newly developed material system, a comprehensive understanding of their long-term stability under potential service temperatures remains to be established.
Liu J, Li BS, Gardner H, Gong Y, Liu F, He G, Moorehead M, Parkin C, Couet A, Wilkinson AJ, Armstrong DEJ.   +10 more
europepmc   +6 more sources

Irradiation-Hardening Model of TiZrHfNbMo_0.1 Refractory High-Entropy Alloys. [PDF]

Entropy (Basel)
In order to find more excellent structural materials resistant to radiation damage, high-entropy alloys (HEAs) have been developed due to their characteristics of limited point defect diffusion such as lattice distortion and slow diffusion. Specially, refractory high-entropy alloys (RHEAs) that can adapt to a high-temperature environment are badly ...
Fan Y, Wang X, Li Y, Lan A, Qiao J.
europepmc   +4 more sources

Progress of refractory high entropy alloys

Journal of Aeronautical Materials
The current research status of refractory high-entropy alloys（RHEAs） is reviewed，the composition design of RHEAs is described，and the effects of metal elements and non-metal elements on the structure and properties of RHEAs are summarized.
WU Hao, YU Jiashi, JIA Zhiqiang, ZHANG Long, CHEN Hao   +4 more
doaj   +2 more sources

Refractory high entropy alloy dataset with room temperature ductility screening

Data in Brief, 2022
This dataset contains 82 unique refractory alloys experimentally synthesized via arc melting and subject to screening tests for hardness and room temperature ductility.
Andrew Detor, Scott Oppenheimer, Rebecca Casey, Cole Crawford   +3 more
doaj   +3 more sources

Ductility Index for Refractory High Entropy Alloys

Crystals
The big advantage of refractory high entropy alloys (RHEAs) is their strength at high temperatures, but their big disadvantage is their brittleness at room temperature, which prevents their machining. There is a great need to classify the alloys in terms
Ottó K. Temesi, Lajos K. Varga, Nguyen Quang Chinh, Levente Vitos   +3 more
doaj   +2 more sources

Research progress in preparation and properties of refractory high entropy alloys

Cailiao gongcheng, 2022
The meaning and characteristics of refractory high entropy alloys were briefly described, and the preparation methods of various refractory high entropy alloys (bulk, film and coating) were summarized.The comprehensive properties of refractory high ...
JIANG Xuan, CHEN Lin, HAO Xuanhong, WANG Yueyi, ZHANG Xiaowei, LIU Hongxi   +5 more
doaj   +1 more source

Research progress in composition design, microstructure and properties of refractory high entropy alloys

Journal of Aeronautical Materials, 2022
High entropy alloy is defined as an alloy containing four or more main elements. The atomic fraction of the main elements is greater than 5% and not more than 35%, which has excellent properties such as high strength, high wear resistance and high ...
WU Junxia, LI Peiyou, DONG Hongfeng, LIU Yaling, ZHANG Wei, WANG Lin, WANG Yongshan   +6 more
doaj   +1 more source

Senary refractory high-entropy alloy Cr MoNbTaVW [PDF]

Calphad, 2015
Abstract This paper demonstrates that a senary refractory high-entropy alloy CrxMoNbTaVW can be tailored over a certain range of Cr content with the BCC structure for different microstructures and physical properties, assisted by CALPHAD simulations.
Zhang, B., Gao, M.C., Zhang, Y., Guo, S.M.   +3 more
openaire   +1 more source