Microstructure, mechanical property and wear behavior of AlCrFe1.5Ni1.5 medium entropy alloy

Qiao, Lei; Zhu, Jingchuan

doi:10.1007/s10853-022-07416-0

Cited by 4 publications

(1 citation statement)

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“…When subjected to repetitive sliding, there was an obvious enhancement in work hardening on the surface, which induced materials spalling on the surface. [ 44 ] Delamination was detected in the enlarged view (Figure 4d), indicating that the wear mechanism of the Fe2.5Ni2.5CrAl alloy involved adhesive wear. As a result, the morphology of the worn surfaces indicated that the as‐cast Fe2.5Ni2.5CrAl MPEAs exhibited combined adhesion and abrasive wear.…”

Section: Resultsmentioning

confidence: 99%

Wear of a Fe2.5Ni2.5CrAl Multiprincipal Element Alloy: A Combined Experimental and Molecular Dynamics Study

Qiao,

Ramanujan,

Zhu

2023

Adv Eng Mater

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The Fe2.5Ni2.5CrAl multi‐principal element alloy (MPEA) is a promising material for engineering application because of its high strength and plasticity values. To evaluate the friction and wear performance, reciprocating dry sliding tests and molecular dynamics (MD) simulations were performed to determine the wear mechanism over a range of length scales. This alloy exhibited a lower average friction coefficient and wear volume loss during dry sliding compared with the well‐known Fe2Ni2CrAl alloy. The worn surface morphology revealed abrasive scratches, grooves, and delamination. The fine wear debris possessed high oxygen content, leading to higher wear resistance. The wear mechanism involved abrasive, adhesive, and oxidative wear. The wear, atomic stress and shear strain, dislocations, and lattice structure were analyzed by MD simulations. Point defects, atomic clusters and stacking faults were identified in the nano‐wear process. The behavior of the 1/6<112>(Shockley) type dislocations was identified as the main dislocation mechanism during sliding. Stacking faults produced during the stress release process were present in the indentation. This work provides a deep insight into the friction and wear behavior of Fe2.5Ni2.5CrAl MPEAs.This article is protected by copyright. All rights reserved.

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Section: Resultsmentioning

confidence: 99%