Microstructural Refinement within a Cold-Sprayed Copper Particle

King, Peter C.; Zahiri, Saden H.; Jahedi, Mahnaz

doi:10.1007/s11661-009-9882-5

Cited by 121 publications

(39 citation statements)

References 28 publications

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“…In other words, the aluminum particles deformed due to high-speed impact get thermal energy so that the grain refinement phenomenon occurs. 2,11,12) The results of TEM observation in inter-particle areas showed approximately 200 nm-sized grains (the black arrows in Fig. 3(c)).…”

Section: ¹1mentioning

confidence: 93%

Effect of Stain Rate on Microstructure Evolution and Compressive Deformation Behavior of High-Strength Aluminum Coating Materials Fabricated by the Kinetic Spray Process

Kim

Lee

Huh³

et al. 2015

Mater. Trans.

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The effects of strain rates on compressive deformation behavior and microstructure evolution of kinetic sprayed pure aluminum were investigated. The initial microstructure showed a highly deformed structure with high-dislocation density. This material exhibited higher yield strengths from 200 to 224 MPa with different strain rates and low strain rate sensitivity (0.012) compared to those of conventional pure aluminum. Strain softening occurred at lower strain rates, even at room temperature, and strain hardening at high strain rates.

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Section: ¹1mentioning

confidence: 93%

Effect of Stain Rate on Microstructure Evolution and Compressive Deformation Behavior of High-Strength Aluminum Coating Materials Fabricated by the Kinetic Spray Process

Kim

Lee

Huh³

et al. 2015

Mater. Trans.

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“…2 Advances in Materials Science and Engineering chemical changes work together, leading to the nanocrystallization of metal particles in the form of grain re nement [10,15,16]. Figure 2 shows the FIB-SEM imaging of the cross section of a Cu particle depositing onto a Cu substrate [17]. Clearly, particle grain structures showed an obvious change from the particle top surface towards the bottom, and such change was much dependent on the plastic deformation level.…”

Section: Nanocrystallization In Cold-sprayedmentioning

confidence: 99%

“…Following the formation of subgrains, adiabatic shear instability happens at extreme deformation areas, resulting in a rapid temperature rise to a value higher than recrystallization temperature. Plastic deformation and heating then work together to induce the dynamic recrystallization at these areas [15,17,18,53,54]. Basically, dynamic recrystallization is controlled by two mechanisms: rotational and migrational types [16,19,20].…”

Section: Nanocrystallization Formation Mechanismmentioning

confidence: 99%

“…Fortunately, although nanoparticles cannot be deposited directly by cold spray, cold-sprayed metal coatings can still exhibit nanostructure. Firstly, nanocrystallization in the form of grain re nement always occurs at the interparticle and coatingsubstrate interfacial regions during the deposition process due to the dynamic recrystallization, which can result in nanostructured grains within the cold-sprayed coating [10,[15][16][17][18][19][20][21]. Secondly, the starting feedstock for cold spray can be nanocrystalline powders [14,[22][23][24][25][26][27][28][29][30][31]; in this case, the coating retains the nanostructure of the starting powders.…”

Section: Introductionmentioning

confidence: 99%

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Cold‐Sprayed Metal Coatings with Nanostructure

Yin

Chen

Suo

et al. 2018

Advances in Materials Science and Engineering

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Cold spray is a solid-state coating deposition technology developed in the 1980s. In comparison with conventional thermal spray processes, cold spray can retain the original properties of feedstock, prevent the adverse influence on the underlying substrate materials, and produce very thick coatings. Coatings with nanostructure offer the potential for significant improvements in physical and mechanical properties as compared with conventional non-nanostructured coatings. Cold spray has also demonstrated great capability to produce coatings with nanostructure. is paper is aimed at providing a comprehensive overview of cold-sprayed metal coatings with nanostructure. A brief introduction of the cold spray technology is provided first. e nanocrystallization phenomenon in the conventional cold-sprayed metal coatings is then addressed. ereafter, focus is switched to the microstructure and properties of the cold-sprayed nanocrystalline metal coatings, and the cold-sprayed nanomaterialreinforced metal matrix composite (MMC) coatings. At the end, summary and future perspectives of the cold spray technology in producing metal coatings with nanostructure are concluded.

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“…Macroscopically, kinetic-sprayed deposits show low porosity and high density with severely deformed and compacted particles (Ref [49][50][51]. Microscopically, the inhomogeneous microstructures are generated between inner and near-interfacial region of deposited particles ( Ref 49,[52][53][54] by an assistance of stored strain-energy-relieving phenomena: grain refinement, dynamic recovery (DRV), dynamic recrystallization (DRX), static recovery (SRV), and static recrystallization (SRX) (Ref 52,(55)(56)(57)(58)(59)(60)(61)(62). Additionally, local phase transformations such as amorphization, crystallization (amorphous alloy), and intermetallic compound creation can occur in the vicinity of the interface (Ref [63][64][65].…”

Section: Introductionmentioning

confidence: 99%

Microstructure of Kinetic Spray Coatings: A Review

2015

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Kinetic spray process has been applied to various industrial fields such as automotive, aviation, and defense industries due to its availability to produce high-performing coating layer. However, since the properties of kinetic-sprayed coating layer are significantly affected by the microstructures of deposit, the microstructures of the deposit should be controlled to acquire advanced coating layer and, accordingly, deep understanding of microstructural evolution must be achieved before controlling the microstructure of the coating layer. This paper gives an overview of contents related to the microstructure of kineticsprayed deposition. The most powerful influencing factors in microstructural evolution of kinetic-sprayed coating layer are instant generation of thermal energy and high-strain, high-strain-rate plastic deformation at the moment of particle impact. A high-density coating layer with low porosity can be produced, although some micro-cracks are occasionally induced at the interparticle boundary or at the inner region of the particles. Also, a microstructure which is distinct from the inner particle region is created in the vicinity of the particle-particle or particle-substrate interface region. However, almost no crystal phase transformation or chemical reaction is induced since the deposited particles are not heated directly by a thermal energy source.

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Microstructural Refinement within a Cold-Sprayed Copper Particle

Cited by 121 publications

References 28 publications

Effect of Stain Rate on Microstructure Evolution and Compressive Deformation Behavior of High-Strength Aluminum Coating Materials Fabricated by the Kinetic Spray Process

Effect of Stain Rate on Microstructure Evolution and Compressive Deformation Behavior of High-Strength Aluminum Coating Materials Fabricated by the Kinetic Spray Process

Cold‐Sprayed Metal Coatings with Nanostructure

Microstructure of Kinetic Spray Coatings: A Review

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