Investigation of the free volume change of Fe41Co7Cr15Mo14C15B6Y2 bulk metallic glass using the cyclic thermal dilatation test

Zeng, Xierong; Hu, Qiang; Fu, Ming; Xie, Shenghui

doi:10.1016/j.jnoncrysol.2012.06.020

Cited by 7 publications

(1 citation statement)

References 54 publications

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“…As shown in Figure 4, whether or not assisted with ultrasonic, laser-clad Fe-based amorphous coatings undergo crystallization, and crystalline phases precipitated are Bcc-Fe (Co, Cr) and (Fe n Cr 23−n ) (B m C 6−m ). XRD patterns of the two coating surfaces are almost identical, with a broad halo in the 2θ geometry of 40-50 • , indicating a highly non-crystalline nature [27]. Compared with the coatings' surfaces, crystal peaks in the transition zone become sharp and significantly intense, especially for coating U1000.…”

Section: Microstructural Examination Resultsmentioning

confidence: 95%

Corrosion Performance of Fe-Based Amorphous Coatings via Laser Cladding Assisted with Ultrasonic in a Simulated Marine Environment

Han,

Xiao,

Wang

2023

Metals

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Fe-based amorphous alloys are considered potential coating materials for applications in marine corrosive environments owing to their high resistance to chloride ion corrosion. Fe-based amorphous alloy (Fe41Co7Cr15Mo14C15B6Y2) was deposited on AISI 1020 steel using ultrasonic-assisted laser cladding. The research findings revealed a gradient structure generated at the junction of the coating and substrate. Ultrasonic promoted crystallization and increased the gradient structure’s average thickness, reducing coating surface cracks. However, ultrasonic had little effect on the amorphous content of the prepared coating surface, which still had a high amorphous content. The Fe-based amorphous coating prepared via laser cladding with ultrasonic demonstrated good corrosion resistance. The corrosion resistance of the coating without ultrasonic was reduced significantly due to cracks. EIS results confirmed that corrosion resistance was related to crystallization and crack issues. Cr element segregation due to crystallization hindered passivation film forming, reducing its corrosion resistance. Crack corrosion enlarged the crack gap and hollowed out the coating and the substrate’s binding zone, accelerating coating failure.

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Section: Microstructural Examination Resultsmentioning

confidence: 95%