Dry‐Sliding Wear Response of MoTaWNbV High Entropy Alloy

Abstract

was examined. The alloy's wear response was tested under different experimental conditions. With the use of a metallic ball as a counter body partner, the morphology of the wear track and the presence of Fe oxides controlled the wear rate. When using a ceramic ball for the same sliding distances, similar observations were made regarding the width of the wear tracks and the reduction of the friction coefficient with an increase of the sliding distance. The examination of the debris further explained the wear mechanisms in every case. Finally, by comparing the wear response of Mo 20 Ta 20 W 20 Nb 20 V 20 with that of a commercial super alloy, the improved behavior of the High Entropy Alloy was highlighted in all cases.

Microstructure and Corrosion Performance of Aluminium Matrix Composites Reinforced with Refractory High-Entropy Alloy Particulates

“…It should be mentioned that MoTaNbVW was one of the pio tory HEAs that has been developed and it meets the prerequisites of simple formation. A thorough evaluation of the microstructure of MoTaNbVW c previous efforts [50,51]. Figure 2 presents the X-ray diffractograms for the different materials produced in the present effort.…”

Bio-high entropy alloys: Progress, challenges, and opportunities

“…The wear resistance of Bio-HEAs is the key to their service life (Moazzen et al, 2022;Zhang et al, 2022). Poulia et al (Poulia et al, 2016) analyzed the influence mechanism of the solid solution phase on relative wear resistance. They found that MoTaWNbV high-entropy alloy with a single-phase BCC structure could effectively absorb the energy during wear due to the abundant slip system in the BCC structure of the alloy, the BCC structure of this alloy possesses more slip systems.…”

“…To further investigate the wear resistance of Bio-HEAs under physiological environments, some researchers used PBS solutions to test the wear resistance of TiZrHfNbFe x HEAs under real service conditions . Figure 18 shows (Poulia et al, 2016). C-I SEM images of worn-scar surfaces of the Ti-Zr-Hf-Nb-Fe x HEAs under PBS wet wear conditions (Wang et al, 2022c).…”

“…FIGURE 18(A, B) Comparison of frictional properties of MoTaWNbV high entropy alloy and Inconel 718 conventional high-temperature alloy, using aluminum oxide and steel balls as counter body materials(Poulia et al, 2016). C-I SEM images of worn-scar surfaces of the Ti-Zr-Hf-Nb-Fe x HEAs under PBS wet wear conditions(Wang et al, 2022c).…”

Development and Property Tuning of Refractory High-Entropy Alloys: A Review

“…Karantzalis et al [89,90] prepared NbTaWMoV and MoTaNbZrTi RHEAs by vacuum arc smelting and then [31] studied the wear resistance of these two alloys at room temperature under different conditions (wear distance, test ball). The results show that the wear rate of NbTaWMoV RHEA decreases with the increase in sliding distance when stainless steel and alumina balls as dual balls.…”