High entropy alloys: A focused review of mechanical properties and deformation mechanisms

EP George, WA Curtin, CC Tasan - Acta Materialia, 2020 - Elsevier
The high-entropy alloy (HEA) concept was based on the idea that high mixing entropy can
promote formation of stable single-phase microstructures. During the past 15 years, various …

Solute strengthening in random alloys

C Varvenne, GPM Leyson, M Ghazisaeidi, WA Curtin - Acta Materialia, 2017 - Elsevier
Random solid solution alloys are a broad class of materials that are used across the entire
spectrum of engineering metals, whether as stand-alone materials (eg Al-5xxx alloys) or as …

Strength can be controlled by edge dislocations in refractory high-entropy alloys

C Lee, F Maresca, R Feng, Y Chou, T Ungar… - Nature …, 2021 - nature.com
Energy efficiency is motivating the search for new high-temperature (high-T) metals. Some
new body-centered-cubic (BCC) random multicomponent “high-entropy alloys (HEAs)” …

Mechanistic origin of high strength in refractory BCC high entropy alloys up to 1900K

F Maresca, WA Curtin - Acta Materialia, 2020 - Elsevier
The body centered cubic (BCC) high entropy alloys (HEAs) MoNbTaW and MoNbTaVW
show exceptional strength retention up to 1900K. The mechanistic origin of the retained …

Theory of screw dislocation strengthening in random BCC alloys from dilute to “High-Entropy” alloys

F Maresca, WA Curtin - Acta Materialia, 2020 - Elsevier
Random body-centered-cubic (BCC)“High Entropy” alloys are a new class of alloys, some
having high strength and good ductility at room temperature and some having exceptional …

Nanostructured high-strength molybdenum alloys with unprecedented tensile ductility

G Liu, GJ Zhang, F Jiang, XD Ding, YJ Sun, J Sun… - Nature materials, 2013 - nature.com
The high-temperature stability and mechanical properties of refractory molybdenum alloys
are highly desirable for a wide range of critical applications. However, a long-standing …

Methods for improving ductility of tungsten-a review

C Ren, ZZ Fang, M Koopman, B Butler… - International Journal of …, 2018 - Elsevier
Pure tungsten and tungsten alloys with minor alloying additions are known to be brittle at
room temperature and have high ductile-to-brittle transition temperatures (DBTT). Improving …

Ab initio modeling of dislocation core properties in metals and semiconductors

D Rodney, L Ventelon, E Clouet, L Pizzagalli… - Acta Materialia, 2017 - Elsevier
Dislocation cores, the regions in the immediate vicinity of dislocation lines, control a number
of properties such as dislocation mobility, cross-slip and short-range interactions with other …

Quantitative tests revealing hydrogen-enhanced dislocation motion in α-iron

L Huang, D Chen, D Xie, S Li, Y Zhang, T Zhu… - Nature Materials, 2023 - nature.com
Hydrogen embrittlement jeopardizes the use of high-strength steels in critical load-bearing
applications. However, uncertainty regarding how hydrogen affects dislocation motion …

[HTML][HTML] Strain-rate effects and dynamic behavior of high entropy alloys

A Huang, SJ Fensin, MA Meyers - Journal of Materials Research and …, 2023 - Elsevier
The novel class of multicomponent alloys, also known as high-entropy alloys (HEAs)
exhibits excellent properties under low strain-rate conditions. These are especially revealed …