Warm spray applied to steel component repair: experimental study
| Autor: | G. P. Marconi, Michela Faccoli, D. Maestrini |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
Materials science
chemistry.chemical_element 02 engineering and technology engineering.material Raw material Indentation hardness Oxygen law.invention Adhesion strength Residual stresses 0203 mechanical engineering Coating Optical microscope Residual stress law Warm Spray Materials Chemistry Composite material Porosity Metallurgy Surfaces and Interfaces 021001 nanoscience & nanotechnology Condensed Matter Physics Surfaces Coatings and Films Substrate (building) 020303 mechanical engineering & transports chemistry Microhardness engineering Warm Spray Repair Residual stresses Microhardness Adhesion strength 0210 nano-technology Repair |
| Popis: | Experimental investigations were carried out in order to evaluate the possibility of using warm spray as a repair technique for steel components. A high velocity oxygen fuel system was modified to deposit an AISI 316 stainless steel feedstock powder in solid state. A preliminary study was carried out on the spray conditions to optimise the deposition process. The powder was deposited on a steel sample, and the quality of the coating was evaluated by optical microscope observations: a limited porosity was observed in the repair. Test damage was produced in another steel sample and was repaired by warm spray. Residual stresses and microhardness of the repaired area were measured. It was found that beneficial compressive residual stresses were produced in the repaired area, which also exhibits a good microhardness, slightly higher than that of the substrate. Finally, adhesion tests were carried out, and a strength >46 MPa was found. |
| Databáze: | OpenAIRE |
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