The Acute Effect of Cold Spray Application on the Mechanical Properties of the Quadriceps Muscle in Athletes

2020 ◽  
Author(s):  
Keyword(s):  
Mechanical Properties ◽  
Cold Spray ◽  
Acute Effect ◽  
Quadriceps Muscle ◽  
Spray Application

Mechanical properties of thick 304L stainless steel deposits processed by He cold spray

2015 ◽  
Vol 277 ◽  
pp. 74-80 ◽  
Author(s):  
Pierre Coddet ◽  
Christophe Verdy ◽  
Christian Coddet ◽  
François Debray ◽  
Florence Lecouturier
Keyword(s):  
Mechanical Properties ◽  
Stainless Steel ◽  
Cold Spray ◽  
304L Stainless Steel

scholarly journals Microstructure, Mechanical Properties and Corrosion Behavior of the Aluminum Alloy Components Repaired by Cold Spray with Al-Based Powders

Metals ◽  
2021 ◽  
Vol 11 (10) ◽  
pp. 1633
Author(s):  
Zhiyi Zhang ◽  
Xiaoguang Sun ◽  
Shiming Huang ◽  
Xiaohui Han ◽  
Ping Zhu ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Aluminum Alloy ◽  
Cold Spray ◽  
Corrosion Behavior ◽  
High Speed ◽  
Neutral Salt ◽  
Cold Spray Process ◽  
Spray Process ◽  
High Speed Trains ◽  
Mechanical Properties And Corrosion

Aluminum alloy components of high-speed trains have a great risk of being corroded by various corrosive medium due to extremely complex atmospheric environments. This will bring out huge losses and reduce the safety and stability of trains. In order to solve the problem, cold spray process was used for repairing the damage of the aluminum alloy components with Al-based powders. Microstructure, mechanical properties and corrosion behavior were studied. The results indicated that there were very few pores and cracks in the repaired areas after repairing. The average microhardness of the repaired areas was 54.5 HV ± 3.4 HV, and the tensile strength of the repaired samples was 160.4 MPa. After neutral salt spray tests for 1000 h, the rate of mass loss of the samples repaired by cold spray was lower than that of 6A01 aluminum alloy. The electrochemical test results showed that the repaired areas had a higher open circuit potential than 6A01 aluminum alloy. As a result, the repaired areas such as the anode protected its nearby substrate. The samples repaired by cold spray exhibited better corrosion than 6A01 aluminum alloy. Cold spray process and Al-based powders are applicable for repairing the aluminum alloy components of high-speed trains.

Cold spray additive manufacturing of Invar 36 alloy: microstructure, thermal expansion and mechanical properties

2021 ◽  
Vol 72 ◽  
pp. 39-51
Author(s):  
Chaoyue Chen ◽  
Yingchun Xie ◽  
Longtao Liu ◽  
Ruixin Zhao ◽  
Xiaoli Jin ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Thermal Expansion ◽  
Additive Manufacturing ◽  
Cold Spray ◽  
Alloy Microstructure

Response of Cold Sprayed Ti6Al4V Coatings to Solid Particle Erosion and Micro-Scratch Wear Processes

2018 ◽  
Vol 941 ◽  
pp. 1680-1685 ◽  
Author(s):  
Miguel Ángel Garrido ◽  
Paloma Sirvent ◽  
Daniel Elvira ◽  
Álvaro Rico ◽  
Claudio J. Múnez ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Residual Stresses ◽  
Solid Particle ◽  
Cold Spray ◽  
Mechanical Response ◽  
Operating Time ◽  
Wear Behaviour ◽  
Solid Particle Erosion ◽  
Particle Erosion ◽  
Spray Technique

Ti6Al4V alloy is widely used for aeronautical components due to a special combination of high mechanical properties, low density and good corrosion resistance at high temperature. These components are usually damaged by particles impacts during their operating time. When the reliability of these components is compromised, they are replaced with the consequent cost of material and time. Spraying coatings on the damaged surface could reveal as an alternative process to repair these components, increasing their operating life. Traditionally, thermal spray processes are used to repair the aeronautical components. However, the coatings produced by these processes are characterized by high residual stresses, porosity and oxidation. The cold spray technique is revealed as a promising spraying alternative due to the characteristic low temperature of the process. Consequently, residual stresses, oxidation, crack formation, phase transformations and microstructural changes are minimized. In this work, a cold spray technique was used to generate Ti6Al4V coatings onto a bulk of the same material. Three different spraying conditions were studied: Ti6Al4V coatings sprayed at 800oC; Ti6Al4V coatings sprayed at 1100oC; and Ti6Al4V coatings sprayed at 1100oC with a subsequent heat treatment: The wear resistance of these coatings was investigated by solid particle erosion and micro-scratch tests. The wear behaviour was determined under several wear tests conditions. Additionally, instrumented indentation tests were carried out on the coatings to determine their mechanical response. The wear mechanisms of the coatings were identified and compared to their microstructure and mechanical properties.

scholarly journals Influence of Cold Spray Nozzle Displacement Strategy on Microstructure and Mechanical Properties of Cu/SiC Composites Coating

2019 ◽  
Vol 813 ◽  
pp. 110-115
Author(s):  
Olga Matts ◽  
Hussein Hammoud ◽  
Alexey Sova ◽  
Zineb Bensaid ◽  
Guillaume Kermouche ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Silicon Carbide ◽  
Cold Spray ◽  
Vertical Direction ◽  
Cold Spraying ◽  
Traverse Speed ◽  
Deformation Pattern ◽  
Spray Nozzle ◽  
Particle Deformation ◽  
Compressive Tests

In this work an influence of cold spray nozzle displacement parameters on the properties of copper-silicon carbide cold spray deposits is considered. In particular the influence of nozzle traverse speed and distance between deposited tracks on the coating porosity and behavior during compressive tests was analyzed. It was shown that cold spraying at low nozzle traverse speed leads to formation of thick tracks with quasi-triangular cross-section. As a consequence, the particle impact angle on the sides of spraying track increases that. Thus, the particle deformation at impact on the track periphery becomes insufficient and local porosity value rises. Increase of nozzle traverse speed allows increasing coating density and mechanical properties due to amelioration of particle deformation conditions. Compressive tests revealed significant anisotropy of mechanical properties of copper-silicon carbide cold spray deposits. In particular, compressive strength measured in vertical direction (perpendicular to the substrate) was significantly higher than one measured in horizontal plane (parallel to substrate). This anisotropy could be explained by the orientation of particle deformation pattern during impact.

scholarly journals Cold-Sprayed Aluminum-Silica Composite Coatings Enhance Antiwear/Anticorrosion Performances of AZ31 Magnesium Alloy

2018 ◽  
Vol 2018 ◽  
pp. 1-8
Author(s):  
Lijia Fang ◽  
Yuting Xu ◽  
Li Gao ◽  
Xinkun Suo ◽  
Jianguo Gong ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Surface Modification ◽  
Magnesium Alloys ◽  
Cold Spray ◽  
Protective Coatings ◽  
Composite Coatings ◽  
Silica Content ◽  
Protective Layers ◽  
Structural Applications ◽  
Enhanced Surface

Extensive efforts devoted in recent years to booming structural applications of lightweight magnesium alloys are usually undermined by their insufficient surface properties. Surface modification is therefore necessarily required in most cases for enhanced surface integrity of the alloys. Here, we report construction of aluminum-silica protective layers by cold spray on AZ31 magnesium alloys, and the effect of the silica additives on microstructure and mechanical properties of the coatings was examined. The ceramic particles were dispersed evenly in the coatings, and increased silica content gives rise to enhanced adhesion, antiwear performances, and microhardness of the coatings. The even distribution of silica in the coatings altered the wear regimes from adhesive to abrasive wear. The cold spray fabrication of the aluminum-silica protective coatings would facilitate structural applications of the magnesium alloys.

Microstructure and Mechanical Properties of Ti Cold-Spray Splats Determined by Electron Channeling Contrast Imaging and Nanoindentation Mapping

2015 ◽  
Vol 21 (3) ◽  
pp. 570-581 ◽  
Author(s):  
Dina Goldbaum ◽  
Richard R. Chromik ◽  
Nicolas Brodusch ◽  
Raynald Gauvin
Keyword(s):  
Mechanical Properties ◽  
Cold Spray ◽  
Electron Backscatter Diffraction ◽  
Substrate Material ◽  
Contrast Imaging ◽  
Electron Channeling ◽  
Metallurgical Bonding ◽  
Resolution Electron ◽  
Backscatter Diffraction ◽  
The Impact

AbstractCold spray is a thermo-mechanical process where the velocity of the sprayed particles affects the deformation, bonding, and mechanical properties of the deposited material, in the form of splats or coatings. At high strain rates, the impact stresses are converted into heat, a phenomenon known as adiabatic shear, which leads to grain re-crystallization. Grain re-crystallization and growth are shown to have a direct impact on the mechanical properties of the cold-sprayed material. The present study ties the microstructural features within the cold-sprayed Ti splats and the substrate to the bonding mechanism and mechanical properties. High-resolution electron channeling contrast imaging, electron backscatter diffraction mapping, and nanoindentation were used to correlate the microstructure to the mechanical properties distribution within the titanium cold-spray splats. The formation of nanograins was observed at the titanium splat/substrate interface and contributed to metallurgical bonding. An increase in grain re-crystallization within the splat and substrate materials was observed with pre-heating of the substrate. In the substrate material, the predominant mechanism of deformation was twinning. A good relationship was found between the hardness and distribution of the twins within the substrate and the size distribution of the re-crystallized grains within the splats.

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