Structure, mechanical properties and nanocrystallization of (FeCoCrNi)-(B,Si) high-entropy metallic glasses

Permanently Polarized Materials: An Approach for Designing Materials with Customized Electrical Properties

“…semipermanent polarization). This approach can be compared to the synthesis of glassy materials (not the intrinsic amorphous approach). , Thus, the experimental procedure used to obtain metallic glasses (also known as amorphous metals) could be similar to that followed to obtain polarized materials with slow dielectric relaxation. That is, the atomic positions could be frozen in metals or alloys by cooling down when a disordered structure is reached, avoiding crystallization.…”

Effect of Si and B on the Electrochemical Behavior of FeCoNiCr-Based High-Entropy Amorphous Alloys

“…In the case of HEMGs, Gong et al [13] have shown that the improvement in the corrosion resistance can be ascribed to two effects: on the one hand to the reduction in atomic mobility due to the high-entropy effect and, on the other hand, to the cocktail effect where the mixture of several corrosion resistant elements can affect the overall behavior. Following this strategy, we modified the composition of one particular HEA [14,15], the equimolar FeCoCrNi, which consists of a stable face-centered cubic (FCC) solid solution with good plasticity and toughness but with low hardness and poor wear resistance. In order to improve the mechanical and electrochemical resistance of this alloy, B and Si were added to this base composition.…”

“…We studied the enhancement of the mechanical properties of these new materials in [14] whereas the behavior of these HEMGs in a corrosive environment is presented here. As far as we know, there are no other works on the system FeCoCrNi besides the one by Ding et al [16] and there are only corrosion studies on similar systems based on the FeNiCrMo and FeCoNiCrMo HEAs [11,12].…”

High Hardness and Wear Resistance in AlCrFeNiV High-Entropy Alloy Induced by Dual-Phase Body-Centered Cubic Coupling Effects

“…High-entropy alloy (HEA) has been favored by many researchers because of its excellent properties, such as its superb specific strength [ 1 ], good fatigue behavior [ 2 ], wear and corrosion resistance [ 3 , 4 , 5 ], super-conductivity [ 6 ], and radiation tolerance [ 7 ], etc. Due to these attractive properties, HEAs are promising candidates for technological applications in many fields, such as high-temperature applications [ 8 ], nuclear energy industry [ 9 ], space exploration, and storage of cryogens [ 10 ].…”

“…The equiatomic or near-equiatomic HEA design aims at the maximization of the configurational entropy to stabilize the solid solution phase. HEAs are often treated as multi-component, solid-solution alloys with simple crystal structures, such as the face-center-cubic (FCC) phase [ 1 , 2 , 3 ], body-center-cubic (BCC) phase [ 22 ], hexagonal-close-packed (HCP) phase [ 22 , 23 ] or their mixtures.…”