FeCoNiCrAl_0.6 high-entropy alloy coating on Q235 steel fabricated by laser cladding

Abstract

To improve the surface properties of engineering components, FeCoNiCrAl_0.6 high-entropy alloy (HEA) coating was prepared on Q235 steel by the laser cladding method. The results indicate that the phase constitution of this HEA coating is mainly a dual-phase structure dominated by face-centred cubic (FCC) solid solution. Moreover, the coating exhibited good corrosion resistance in both 3.5 wt-% NaCl and 0.1 mol L^–1 HCl solutions, which can be attributed to the small Volta potential difference (∼20 mV) between the FCC phase and the body-centred cubic phase. This work confirms that the corrosion resistance of Q235 steel can be greatly improved by coating with a FeCoNiCrAl_0.6 HEA, providing a novel route to further develop HEA coatings with excellent corrosion resistance.

KEYWORDS:

• Laser cladding
• high-entropy alloy
• microstructure
• corrosion behaviour

Disclosure statement

No potential conflict of interest was reported by the author(s).

Correction Statement

This article has been corrected with minor changes. These changes do not impact the academic content of the article.

Additional information

Funding

This work was supported by the National Natural Science Foundation of China [grant number U1704159], [grant number 52101203] and [grant number 52101053]. The authors thank for the technical support by Center for Modern Analysis and Gene Sequencing of Zhengzhou University.