Nov 13, 2024 · The concept of lightweight refractory high-entropy alloys (LW-RHEAs) breaks the bottleneck stage of conventional RHEAs by incorporating low-density elements (such as Ti, Al, V, and Zr) to replace ...

Jul 10, 2023 · In recent years, high-entropy alloys (HEAs) have become a research hotspot in materials community, and great progress has been made in exploring various high-performance HEAs. As a special class, the light-weight refractory high-entropy alloys (RHEAs) own both excellent high-temperature comprehensive properties and low density and have ...

Dec 1, 2024 · The strengthening mechanisms and the softening mechanism of the alloys was briefly analyzed. This study is expected to provide guidance and suggestions for the design of lightweight refractory high-entropy alloys, and promote the application of lightweight refractory high-entropy alloys in aerospace, automotive and energy fields.

Sep 1, 2023 · A novel category of lightweight Ti x(x=0.5 – 2) AlV 0.5 CrMo refractory high-entropy alloys (RHEAs) have been designed by tailoring the in-situ forming of heterogeneous structures during spark plasma sintering (SPS). The effect of Ti on the microstructure evolution and mechanical properties was thoroughly investigated. All the as-milled Ti x(x=0.5 – 2) AlV 0.5 CrMo powders were found to ...

Abstract: In recent years, high-entropy alloys (HEAs) have become a research hotspot in materials community, and great progress has been made in exploring various high-performance HEAs. As a special class, the light-weight refractory high-entropy alloys (RHEAs) own both excellent high-temperature comprehensive properties and low density and have accordingly attracted more and more attention.

Dec 18, 2023 · Recently, the design of lightweight high entropy alloys (HEAs) with a mass density lower than 5 g/cm3 has attracted much research interest in structural materials. We applied a first principles ...

Keywords: high-entropy alloys, refractory alloys, lightweight, sigma phase, mechanical properties. 1. Introduction. High-entropy alloys (HEAs) are defined as alloys that are composed of more than 4 elements with near equi-atomic percentage [1,2,3,4].

Jul 15, 2021 · Through the high-throughput screening, precipitation-strengthened lightweight high-entropy alloys are discovered from thousands of initial compositions, which exhibit enhanced strengths compared ...

Feb 1, 2023 · As a special class, the light-weight refractory high-entropy alloys (RHEAs) own both excellent high-temperature comprehensive properties and low density and have accordingly attracted more and ...

Lightweight refractory high-entropy alloys (LRHEAs) composed of multiple low-density refractory metals [1–3], such as titanium (Ti), zirconium (Zr), niobium (Nb), vanadium (V) and chromium (Cr), are potential structural materials that can be applied in extreme environments due to their high specific strength [4–6], high thermal stability