Dynamic recrystallization in the particle/particle interfacial region of cold-sprayed nickel coating: Electron backscatter diffraction characterization

Zou, Yu; Qin, Wei; Irissou, Éric; Legoux, Jean-Gabriel; Yue, Stephen; Szpunar, Jerzy A.

doi:10.1016/j.scriptamat.2009.07.020

Cited by 254 publications

(82 citation statements)

References 20 publications

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“…For the case of metallic glasses, on the other hand, CS may result in nanocrystallisation of the initially amorphous phase [89]. More examples of amorphization and dynamic recrystallization in cold-sprayed deposits are reported in the literature [124,[130][131][132].…”

Section: Microstructurementioning

confidence: 99%

Cold spraying – A materials perspective

et al. 2016

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Cold spraying is a solid-state powder deposition process with several unique characteristics, allowing production of coatings or bulk components from a wide range of materials. The process has attracted much attention from academia and industry over the past two decades.The technical interest in cold spraying is twofold: first as a coating process for applications in surface technology, and second as a solid-state additive manufacturing process, offering an alternative to selective laser melting or electron beam melting methods. Moreover, cold spraying can be used to study materials behaviour under extremely high strain rates, high pressures and high cooling rates. The cold spraying process is thus considered to be relevant for various industrial applications, as well as for fundamental studies in materials science.This article aims to provide an overview of the cold spray process, the current understanding of the deposition mechanisms, and the related models and experiments, from a materials science perspective. IntroductionCold spraying (CS) is a solid-state material deposition technique, where micron-sized particles of a powder bond to a substrate as a result of high-velocity impact and the associated severe plastic deformation. Acceleration of particles to high velocities is obtained via expansion of a pressurised and (ironically) 'hot' gas through a diverging-converging nozzle.Despite heating the process gas -which is to provide higher acceleration of the gas and also to facilitate particle deformation through thermal softening -the feedstock remains in the solid state throughout the entire process; hence the name 'cold' spraying. This is to underline the contrast to conventional thermal spraying where particles are completely or partially molten upon impact onto the substrate. Alternative terminology includes cold gas spray, micro cold spray, cold gas dynamic spray, kinetic spray, supersonic particle deposition and metal powder application (MPA), all of which refer to the same principle of solid-state powder deposition as described above. CS is used for coating and repair. It is also used for additive manufacturing (AM) at relatively high deposition rates as compared to the methods based on selective laser or electron beam melting. The main advantage of CS is that it alleviates the problems associated with high temperature processing of materials, such as oxidation and unfavourable structural changes. It is possibly the only continuous method to produce bulk components of metastable materials that are available only in the powder form, e.g. as obtained from mechanical attrition or gas atomisation. The aim of the present paper is to provide an overview of CS from a materials perspective, particularly for a broader audience in materials research, e.g. with interest in dynamic phenomena, plasticity and phase transformations. In terms of application and properties, CS is perhaps best to be compared to thermal spraying processes, as in [24,25]. In view of relevant physical phenomena, however, CS is mos...

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Section: Microstructurementioning

confidence: 99%

Cold spraying – A materials perspective

et al. 2016

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“…The powders impact onto a substrate and build up a coating. Many complex phenomena take place during deposition, including: work hardening, formation of adiabatic shear instabilities and recrystallization [21][22][23][24]. The plastic deformation and formation of the adiabatic shear instability are believed to contribute to the bonding [25][26][27][28] for both particle to substrate (i.e.…”

Section: Introductionmentioning

confidence: 99%

Mechanical behavior of Ti cold spray coatings determined by a multi-scale indentation method

Goldbaum

Ajaja

Chromik

et al. 2011

Materials Science and Engineering: A

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“…[30] One way to determine which of these is operating is to consider the change in misorientation moving from the original grains to the recrystallized region. [31,32] showing the distinct microstructures and the corresponding misorientations. Moving from A to B, the IQ decreases and there is a gradual accumulation of 6.5 deg of misorientation over~12.5 lm indicating long range lattice rotations within this grain (Figure 6(b)).…”

Section: A Microstructure Evolutionmentioning

confidence: 99%

Accommodation of Plastic Deformation by Ultrasound-Induced Grain Rotation

Dutta

Petrov

Hermans

et al. 2015

Metall Mater Trans A

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Electron backscatter diffraction was used to investigate the softening effect in low-carbon steel [Fe-0.051C-0.002Si-0.224Mn-0.045Al (wt pct)] during tensile deformation with in situ ultrasonic treatment. A bimodal grain size distribution is observed with relatively small equiaxed grains with an average diameter of 10 lm at the grain boundaries of large elongated grains. The formation of these relatively small equiaxed grains is interpreted in terms of dynamic recrystallization by lattice and sub-grain rotation.

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Dynamic recrystallization in the particle/particle interfacial region of cold-sprayed nickel coating: Electron backscatter diffraction characterization

Cited by 254 publications

References 20 publications

Cold spraying – A materials perspective

Cold spraying – A materials perspective

Mechanical behavior of Ti cold spray coatings determined by a multi-scale indentation method

Accommodation of Plastic Deformation by Ultrasound-Induced Grain Rotation

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