Journal
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
Volume 127, Issue 5, Pages -Publisher
SPRINGER HEIDELBERG
DOI: 10.1007/s00339-021-04500-1
Keywords
High-entropy alloy; Magnetic field; Laser cladding; Directional array
Funding
- National Natural Science Foundation of China [51975137, 51775127]
- Fundamental Research Funds for Province Universities [Hkdcx201903]
- Heilongjiang Provincial Natural Science Foundation of China [LH2020E120]
- China Postdoctoral Science Foundation [2018M641809]
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The effect of magnetic induction intensity on AlCoCrFeNiTi HEA coatings was systematically investigated, and it was found that the HEA coatings synthesized under 1 T magnetic induction intensity exhibited improved microstructure and corrosion resistance.
The directional array TiN-reinforced AlCoCrFeNiTi high-entropy alloy (HEA) coatings were successfully synthesized by magnetic field-assisted laser cladding on Ti-6Al-4V (TC4) alloy. The effect of magnetic induction intensity of AlCoCrFeNiTi HEA coatings was investigated methodically on thermodynamic calculation, microstructure characterization and corrosion resistance. The results show HEA coatings are mainly composed of body-centered cubic (BCC) solid solution phase, (Ni, Co)Ti-2 intermetallic compound and TiN ceramic phase. With 1 T magnetic induction intensity assisted laser cladding, the microstructures of in situ TiN display a cross shape of the directional array. In 3.5 wt.% NaCl solution, the 1 T HEA coating could significantly decrease the corrosion rate compared with TC4 alloy.
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