Effect of hot isostatic pressing (HIP) on microstructure and mechanical properties of Ti6Al4V alloy fabricated by cold spray additive manufacturing

Chen, Chaoyue; Xie, Yingchun; Yan, Xingchen; Yin, Shuo; Fukanuma, Hirotaka; Huang, Renzhong; Zhao, Ruixin; Wang, Jiang; Ren, Zhongming; Liu, Min; Liao, Hanlin

doi:10.1016/j.addma.2019.03.028

Cited by 74 publications

(67 citation statements)

References 44 publications

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“…However, Ti64 titanium alloy is difficult to cast and machine via traditional methods owing to its inherent properties, such as low thermal conductivity and high chemical reactivity [ 3 ]. Additive manufacturing (AM), also known as 3D printing, is considered an innovative manufacturing technology in the industry [ 4 , 5 , 6 ]. Specifically, selective laser melting (SLM) has become a popular AM method for manufacturing with Ti64 alloy.…”

Section: Introductionmentioning

confidence: 99%

Effects of Laser Shock Peening on Microstructure and Properties of Ti–6Al–4V Titanium Alloy Fabricated via Selective Laser Melting

et al. 2020

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Laser shock peening (LSP) is an innovative surface treatment process with the potential to change surface microstructure and improve mechanical properties of additively manufactured (AM) parts. In this paper, the influences of LSP on the microstructure and properties of Ti–6Al–4V (Ti64) titanium alloy fabricated via selective laser melting (SLM), as an attractive AM method, were investigated. The microstructural evolution, residual stress distribution and mechanical properties of SLM-built Ti64 samples were characterized before and after LSP. Results show that the SLM sample was composed of single hcp α’ phase, which deviates from equilibrium microstructure at room temperature: α + β phases. The LSP significantly refines the grains of α’ phase and produces compressive residual stress (CRS) of maximum magnitude up to −180 MPa with a depth of 250 μm. Grain refinement of α’ phase is attributed to the complex interaction of dislocations and the intersection of deformation twinning subjected to LSP treatment. The main mechanism of strength and micro-hardness enhancement via LSP is ascribed to the effects of CRS and α’ phase grain refinement.

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Section: Introductionmentioning

confidence: 99%

Effects of Laser Shock Peening on Microstructure and Properties of Ti–6Al–4V Titanium Alloy Fabricated via Selective Laser Melting

et al. 2020

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“…In addition, hot isostatic pressing can also be employed as a post-process treatment method, which compresses materials by applying high temperature (up to 2000 °C) and isostatic pressure (up to 200 MPa) at the same time. Chen et al [95] adopted HIP treatment to reduce the interior defects, adjust the microstructure, and improve the mechanical properties of cold sprayed Ti6Al4V deposits. The optical microscopy images (Figure 23a-d) and 3D reconstructions by XCT (Figure 23e-h) showed that the fully dense Ti6Al4V deposits were obtained through the high temperature diffusion and high and (e) residual stress profiles of the cold sprayed 17-4PH stainless steel coating after finish turning (FT) and finish turning followed by ball-burnishing (BB) (adapted from reference [91], with permission from © Elsevier).…”

Section: Other Post-process Treatmentsmentioning

confidence: 99%

“…(a-d) Optical images of the cross-sections of cold sprayed Ti6Al4V samples treated under different conditions: (a) as-cold sprayed by using N 2 and (b) after HIP; (c) as-cold sprayed by using He and (d) after HIP; (e-h) 3D-reconstructions of the pores within the cold sprayed Ti6Al4V samples treated under different conditions: (e) N 2 -AF; (f) N 2 -HIP; (g) He-AF; and (h) He-HIP; (i) tensile stress-strain relationships and (j) ultimate tensile strengths of cold sprayed Ti6Al4V samples treated under the respective conditions (adapted from reference[95], with permission from © Elsevier).…”

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confidence: 99%

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

Sun

Tan

et al. 2020

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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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“…It uses compressed gas (air, helium, nitrogen, etc.) as an accelerated gas stream to drive powder particles (particle size 1-50 µm) to collide with the substrate at low temperature (room temperature to 600 • C), supersonic speed (300-1200 m/s), and complete solid state so that the particles undergo strong plastic deformation and deposit to form a coating [9][10][11][12][13][14].…”

Section: Cold Spray Technology Featuresmentioning

confidence: 99%

Study on Corrosion Resistance and Wear Resistance of Zn–Al–Mg/ZnO Composite Coating Prepared by Cold Spraying

Wang

Xiong

et al. 2019

Coatings

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Two composite coatings, Zn65Al15Mg5ZnO15 and Zn45Al35Mg5ZnO15, were prepared by the cold spray technique and were found to be compact, with no pits or cracks, based on scanning electron microscope (SEM) and energy-dispersive X-ray spectroscopy (EDS) investigations. The results of the neutral salt spray (NSS) and electrochemical tests showed that the two composite coatings possess a suitable corrosion performance. However, the Zn45Al35Mg5ZnO15 composite coatings were more corrosion resistant and allowed a better long-term stability. In addition, they were found to exhibit the best wear resistance and photocatalytic degradation efficiency.

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Effect of hot isostatic pressing (HIP) on microstructure and mechanical properties of Ti6Al4V alloy fabricated by cold spray additive manufacturing

Cited by 74 publications

References 44 publications

Effects of Laser Shock Peening on Microstructure and Properties of Ti–6Al–4V Titanium Alloy Fabricated via Selective Laser Melting

Effects of Laser Shock Peening on Microstructure and Properties of Ti–6Al–4V Titanium Alloy Fabricated via Selective Laser Melting

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

Study on Corrosion Resistance and Wear Resistance of Zn–Al–Mg/ZnO Composite Coating Prepared by Cold Spraying

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