Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/13165
Title: Laser cladding of FeCoNiCrAlCuxSi0.5 high entropy alloys on AZ31 Mg alloy substrates
Authors: Yue, TM 
Zhang, H
Issue Date: 2014
Source: Materials research innovations, 2014, v. 18, p. S2624-S2628
Abstract: To improve the inherent low hardness and poor corrosion resistance of an AZ31 Mg alloy, FeCoNiCrAlCuxSi0.5 high entropy alloys (HEAs) were clad on Mg alloy substrates using a preplaced powder bed method and laser re-melting. The results showed that coating dilution by Mg was limited to the interface regions. Similarly, except for a small amount of Cu of the HEA entering into the Mg substrate to a shallow depth, no other HEA elements were found in the re-melted zone of the substrate. The stability of FeCoNiCrAlCuxSi0 5 HEAs with the addition of Mg was evaluated based on the change of the Gibbs free energy. The results showed that the original HEAs without Mg were stable alloys. The microstructure of the FeCoNiCrAlCuSi0 5 and FeCoNiCrAlCu0 5Si0 5 clads consisted of only bcc and fcc simple solid solution phases without intermetallic compounds. With regard to properties, the HEA clads have high hardness and high corrosion resistance.
Keywords: Corrosion
Hardness
High entropy alloy
Laser cladding
Magnesium
Publisher: Maney Publishing
Journal: Materials research innovations 
ISSN: 1432-8917
EISSN: 1433-075X
DOI: 10.1179/1432891714Z.000000000530
Appears in Collections:Conference Paper

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