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Wear behavior of Al0.6CoCrFeNi high-entropy alloys: Effect of environments

Journal Article · · Journal of Materials Research
DOI:https://doi.org/10.1557/jmr.2018.279· OSTI ID:1509731
 [1];  [1];  [1];  [2];  [3];  [4];  [1]
  1. Taiyuan Univ. of Technology, Taiyuan (China)
  2. The Univ. of Tennessee, Knoxville, TN (United States)
  3. National Energy Technology Lab. (NETL), Albany, OR (United States); AECOM, Albany, OR (United States)
  4. National Energy Technology Lab. (NETL), Albany, OR (United States)
Environment can impact the wear behavior of metals and alloys substantially. The tribological properties of Al0.6CoCrFeNi high-entropy alloys (HEAs) were investigated in ambient air, deionized water, simulated acid rain, and simulated seawater conditions at frequencies of 2–5 Hz. The as-cast alloy was composed of simple face-centered cubic and body-centered cubic phases. The wear rate of the as-cast HEA in the ambient air condition was significantly higher than that in the liquid environment. The wear resistance in seawater was superior to that in ambient air, deionized water, and acid rain. Both the friction coefficient and wear rate in seawater were the lowest due to the formation of oxidation film, lubrication, and corrosion action in solution. The dominant wear mechanism in the ambient air condition and deionized water was abrasive wear, delamination wear, and oxidative wear. Here by contrast, the wear mechanism in acid rain and seawater was mainly corrosion wear, adhesive wear, abrasive wear, and oxidative wear.
Research Organization:
National Energy Technology Laboratory (NETL), Pittsburgh, PA, Morgantown, WV, and Albany, OR (United States)
Sponsoring Organization:
FE; USDOE
Grant/Contract Number:
FE0004000
OSTI ID:
1509731
Report Number(s):
NETL-PUB-22337
Journal Information:
Journal of Materials Research, Journal Name: Journal of Materials Research Journal Issue: 19 Vol. 33; ISSN 0884-2914
Publisher:
Materials Research SocietyCopyright Statement
Country of Publication:
United States
Language:
English

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Cited By (4)

Microstructures, Mechanical Properties, and Corrosion Behaviors of Refractory High-Entropy ReTaWNbMo Alloys journal January 2020
Effect of cobalt content on wear behaviour of Al 0.4 FeCrNiCox (x = 0, 0.25, 0.5, 1.0 mol) high entropy alloys tested under demineralised water with and without 3.5% NaCl solution journal May 2019
Dissimilar welding of Al 0.1 CoCrFeNi high-entropy alloy and AISI304 stainless steel journal June 2019
Additive Manufacturing of High-Entropy Alloys: A Review journal December 2018

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