Investigation of residual stress generation during thermal spraying by continuous curvature measurement

Gill, Shubhra; Clyne, T.W.

doi:10.1016/0040-6090(94)90182-1

Cited by 63 publications

(24 citation statements)

References 10 publications

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“…This temperature reaches its maximum in a short time, if surface cooling is used during the process. Tensile values with similar profiles are predicted by a model developed by Gill and Clyne [24] for the effects of the quenching stresses.…”

Section: Residual Stresses and Characteristics Of The Coating Systemmentioning

confidence: 99%

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Study by X-ray diffraction and mechanical analysis of the residual stress generation during thermal spraying

Pina

Dias

Lebrun

2003

Materials Science and Engineering: A

105

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Thermally sprayed coatings are formed by the deposition of molten or partially molten particles, propelled onto a substrate where they impact, spread and solidify rapidly. Residual stresses are expected within the sprayed deposit as a consequence of the release of thermal and kinetic energies. A wide range of materials and two spraying techniques are considered in this study, namely atmospheric plasma spraying (APS) and high-velocity oxygen fuel. Stresses were determined by the X-ray diffraction (XRD) method. The results were compared with those calculated by mechanical analysis of stress relief in coatings detached from the substrate. Comparison of the results for adherent and free-standing coatings shows that the residual stress state can be resolved in terms of the components suggested by models that propose two stages of stress generation: quenching stresses and secondarycooling stresses. The in-depth distribution of residual stresses, through the coating thickness, is discussed in terms of the nature of the coating system. #

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Section: Residual Stresses and Characteristics Of The Coating Systemmentioning

confidence: 99%

“…The technique has extensively been applied to the study of thermally sprayed coatings [9,14,16,17,26Á/30]. It gives reliable results about the final residual stress state mechanical components while avoiding deposits on thin substrates, or the preparation of special samples to be submitted to layer-removal methods [24,31].…”

Section: Introductionmentioning

confidence: 99%

Study by X-ray diffraction and mechanical analysis of the residual stress generation during thermal spraying

Pina

Dias

Lebrun

2003

Materials Science and Engineering: A

105

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“…The measurement of in situ beam curvature during TS coating deposition was first demonstrated by Kuroda 5 and followed by detailed modeling of the layerby-layer stress building process by Tsui and Clyne. 4,19,20 The technique was further expanded on by Matijicek and Sampath 6,7 and correlated with x-ray and neutron-based techniques. 21 The ability to observe and measure both the coating deposition and cooling gives insight into the coating formation stresses.…”

Section: Stress Evolution-coating Deposition and Residual Stressesmentioning

confidence: 99%

Structurally Integrated, Damage-Tolerant, Thermal Spray Coatings

Vackel

Dwivedi

Sampath

2015

JOM

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Thermal spray coatings are used extensively for the protection and life extension of engineering components exposed to harsh wear and/or corrosion during service in aerospace, energy, and heavy machinery sectors. Cermet coatings applied via high-velocity thermal spray are used in aggressive wear situations almost always coupled with corrosive environments. In several instances (e.g., landing gear), coatings are considered as part of the structure requiring system-level considerations. Despite their widespread use, the technology has lacked generalized scientific principles for robust coating design, manufacturing, and performance analysis. Advances in process and in situ diagnostics have provided significant insights into the process-structure-property-performance correlations providing a framework-enhanced design. In this overview, critical aspects of materials, process, parametrics, and performance are discussed through exemplary studies on relevant compositions. The underlying connective theme is understanding and controlling residual stresses generation, which not only addresses process dynamics but also provides linkage for process-property relationship for both the system (e.g., fatigue) and the surface (wear and corrosion). The anisotropic microstructure also invokes the need for damage-tolerant material design to meet future goals.

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“…Alguns deles se baseiam em métodos ópticos [1][2][3][4], outros em métodos capacitivos [5][6][7][8] e alguns fazem a medição por difração de raios-x [9][10][11].…”

Section: Lista De Figurasunclassified

“…O raio é refletido pela extremidade do substrato e, medindo-se o deslocamento do raio, pode-se chegar ao deslocamento do substrato [6]. Gill [1,2] propôs utilizar uma câmera de vídeo para gravar e medir o deslocamento do substrato por processamento de imagens. Outro metodo óptico proposto incorpora o uso de um feixe de fibras ópticas [3,4].…”

Section: Medição De Tensões Residuais Em Filmes Finosunclassified

Medição de tensões residuais em filmes finos durante o processo de deposição.

Lagatta¹

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Investigation of residual stress generation during thermal spraying by continuous curvature measurement

Cited by 63 publications

References 10 publications

Study by X-ray diffraction and mechanical analysis of the residual stress generation during thermal spraying

Study by X-ray diffraction and mechanical analysis of the residual stress generation during thermal spraying

Structurally Integrated, Damage-Tolerant, Thermal Spray Coatings

Medição de tensões residuais em filmes finos durante o processo de deposição.

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