Arc deposited AlSi12 cladding layer on steel plate without zinc coating

ABSTRACT

AlSi12 cladding layer was fabricated on steel plate without zinc coating via cold metal transfer arc deposited technique. The wettability, morphologies, microstructures, and mechanical properties of the cladding layer were investigated. The cladding layer exhibited favourable wettability with steel plate. Large swing amplitude and high swing frequency were the key factors to achieve excellent wettability. The cladding layer was composed of primary Al dendrites and (Al + Si) eutectic structure, and the microstructures were refined. Continuous and thin intermetallic compound layer appeared at AlSi12/steel interface, and reliable bonding strength between the cladding layer and steel plate was achieved. The fracture surface exhibited both brittle fracture and ductile fracture.

KEYWORDS:

• Cold metal transfer
• AlSi12
• cladding layer
• wettability
• bonding strength
• dilution rate
• fracture
• intermetallic compound layer

Disclosure statement

No potential conflict of interest was reported by the authors.

ORCID

Jian Zhou http://orcid.org/0000-0003-4166-2564

Feng Xue http://orcid.org/0000-0003-4558-4567

Additional information

Funding

This work was supported by the Open Fund of Key Laboratory of Materials Preparation and Protection for Harsh Environment (Nanjing University of Aeronautics and Astronautics), Ministry of Industry and Information Technology No. 56XCA17006-1 for supporting.