Investigation of the interfacial reactions between steel and aluminum coatings for hybrid casting

Bobzin, Kirsten; Öte, Mehmet; Wiesner, Stefanie; Gerdt, L.

doi:10.1088/1757-899x/373/1/012013

Cited by 1 publication

(1 citation statement)

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“…Because Al diffused into the intermetallic layers faster than Mg and the vacancies moved in the opposite direction of the dominant diffusive flux, the vacancies were being accumulated at the Al coating and Al-Mg compound interface-the Kirkendall effect [23]. Kirkendall pores were also observed at the interface between cold sprayed AA7075 coating and steel DC04 substrate as well as the interface between AA7075 coating and steel 22MnB5 substrate after HT [54]. In addition, Kirkendall pores were also formed at the steel/Al splat interfaces in cold sprayed Al-SS composite coatings after HT, which was also due to the Kirkendall effect [55].…”

Section: Of 35mentioning

confidence: 99%

Post-Process Treatments on Supersonic Cold Sprayed Coatings: A Review

Sun

Tan

et al. 2020

Coatings

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Cold Gas Dynamic Spray or Supersonic Cold Spray, or simply ‘Cold Spray’, is an emerging technology for rapidly building thin films, thick coatings and large-scale additive manufacturing at relatively low temperatures. In a cold spray process, particles are accelerated to supersonic speeds by a propellant gas and impact a substrate, thus producing a strong bonding with the substrate and subsequently forming a deposit via layer-by-layer buildup. The scalability and low cost of this method make it promising for many applications in industry, such as metal component surface repair/enhancement/restoration and functional coatings for electrical, thermal, biomedical, energy storage, and nuclear plant applications. However, cold sprayed deposits usually require post process treatments to further modify their microstructures and mechanical properties in order to obtain the desired performances. A number of studies have been carried out on this topic. Here, recent progress in different post process treatments on cold sprayed deposits is reviewed, including heat treatment, friction-stir processing, shot peening, and laser re-melting. The effects of these post treatments on the microstructure, residual stress and mechanical properties of cold sprayed deposits are discussed.

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Section: Of 35mentioning

confidence: 99%