Results 21 to 30 of about 6,572 (196)

Application of refractory high entropy alloys on aero-engines

Journal of Aeronautical Materials, 2019
High strength and low density are the basic requirements for the materials used in the aeronautical field, the engine materials need high temperatures resistance more severely.
WEI Yaoguang, GUO Gang, LI Jing, ZENG Yipan, HE Jing   +4 more
doaj   +1 more source

Solid solution softening at room temperature and hardening at elevated temperatures: a case by minor Mn addition in a (HfNbTi)85Mo15 refractory high entropy alloy

Materials Research Express, 2023
To address the conflict between room-temperature (RT) ductility and high-temperature (HT) strength in single phase bcc-structured refractory high entropy alloys, here we propose to use minor alloying to achieve solid solution softening at RT and ...
Xiaolong Li, Mao Ding, Qiang Hu, Zhiyuan Liu, Huahai Mao, Sheng Guo   +5 more
doaj   +1 more source

New refractory high entropy alloys

IOP Conference Series: Materials Science and Engineering, 2019
Abstract The paper presents researches on the microstructure and mechanical properties of a new types of refractory high entropy alloys, which can be used for thermal engine components as well as for military incendiary bullet. The main characteristics required for such applications are high compression resistance, microstructural ...
I Voiculescu, V Geantă, R Stefănoiu, A Rotariu, E Scutelnicu, M C Pantilimon, D Mitrică, V Crăciun   +7 more
openaire   +1 more source

Effect of Ti on defects in Nb-Mo-Ta-W high-entropy alloy prepared by laser metal deposition

Journal of Aeronautical Materials, 2023
The Nb-Mo-Ta-W series refractory high-entropy alloys with composition recombination design were manufactured by laser metal deposition process. The phase structure, defects and microstructure of（NbMoTa）90W10 and（NbMoTaTi）90W10 high-entropy alloys were ...
LI Qingyu, LIANG Jingyi, CHEN Minrui, YANG Zhihai, PENG Hang, LI Dichen   +5 more
doaj   +1 more source

High-entropy high-hardness metal carbides discovered by entropy descriptors [PDF]

, 2018
High-entropy materials have attracted considerable interest due to the combination of useful properties and promising applications. Predicting their formation remains the major hindrance to the discovery of new systems.
Brenner, Donald W., Curtarolo, Stefano, Harrington, Tyler, Maria, Jon-Paul, Oses, Corey, Samiee, Mojtaba, Sarker, Pranab, Toher, Cormac, Vecchio, Kenneth S.   +8 more
core   +3 more sources

A Nitride-Reinforced NbMoTaWHfN Refractory High-Entropy Alloy with Potential Ultra-High-Temperature Engineering Applications

Engineering, 2023
Refractory high-entropy alloys (RHEAs) have promising applications as the new generation of high-temperature alloys in hypersonic vehicles, aero-engines, gas turbines, and nuclear power plants.
Yixing Wan, Yanhai Cheng, Yongxiong Chen, Zhibin Zhang, Yanan Liu, Haijun Gong, Baolong Shen, Xiubing Liang   +7 more
doaj   +1 more source

Corrosion behavior of Hf0.5Nb0.5Ta0.5Ti1.5Zr refractory high-entropy in aqueous chloride solutions

Electrochemistry Communications, 2019
The Hf0.5Nb0.5Ta0.5Ti1.5Zr refractory high-entropy alloy with excellent corrosion resistance in the 3.5 wt% NaCl solution is identified in this work. This refractory high-entropy alloy exhibits much better general corrosion resistance than that of the ...
Qiongyu Zhou, Saad Sheikh, Ping Ou, Dongchu Chen, Qiang Hu, Sheng Guo   +5 more
doaj   +1 more source

Design of Refractory High-Entropy Alloys

JOM, 2015
This report presents a design methodology for refractory high-entropy alloys with a body-centered cubic (bcc) structure using select empirical parameters (i.e., enthalpy of mixing, atomic size difference, Ω-parameter, and electronegativity difference) and CALPHAD approach.
M. C. Gao, C. S. Carney, Ö. N. Doğan, P. D. Jablonksi, J. A. Hawk, D. E. Alman   +5 more
openaire   +2 more sources

Refractory high-entropy alloys: A review of preparation methods and properties

工程科学学报, 2021
Alloying is one of the main ways to achieve desirable properties in materials. The design concept is based on one or two metal elements, supplemented with multiple trace elements to achieve altered or optimized properties.
Le ZONG, Liu-jie XU, Chun-yang LUO, Shi-zhong WEI   +3 more
doaj   +1 more source

Recent Progress with BCC-Structured High-Entropy Alloys

Metals, 2022
High-entropy alloys (HEAs) prefer to form single-phase solid solutions (body-centered cubic (BCC), face-centered cubic (FCC), or hexagonal closed-packed (HCP)) due to their high mixing entropy.
Fangfei Liu, Peter K. Liaw, Yong Zhang
doaj   +1 more source