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Bibliographic Details
Main Author:	John J. Coronado
Format:	Artículo científico
Language:	es
Published:	Universidad Tecnológica de Pereira 2007
Subjects:	Ingeniería fatiga revestimiento Tratamiento superficial microscopía electrónica de barrido
Online Access:	https://www.redalyc.org/articulo.oa?id=84934036
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Efecto de la preparación superficial y aplicación de recubrimientos en la resistencia a la fatiga del acero SAE 1045 John J. Coronado Ingeniería fatiga revestimiento Tratamiento superficial microscopía electrónica de barrido En este artículo se estudia el comportamiento a fatiga del acero SAE 1045usando cuatro condiciones superficiales diferentes: pulido, chorreado conpartículas de arena, de alúmina y de acero. Además se aplicaron recubrimientosusando rociado térmico por combustión a probetas chorreadas con arena. Serealizaron pruebas de fatiga en flexión rotatoria y la caracterización de lasuperficie de fractura usando lupa estereoscópica y microscopio electrónico debarrido. Se encontró un aumento de la resistencia a fatiga de las muestraspreparadas con arena (458,58 MPa) y de las muestras preparadas con alúmina(428,36 MPa), respecto a la resistencia de las muestras pulidas (422,00 MPa). Laresistencia a fatiga de las muestras preparadas con partículas de acero disminuyó(415,44 MPa), debido a marcas superficiales que actuaron como concentradoresde esfuerzos y originaron la propagación de grietas por fatiga. Las probetasrevestidas con una aleación Fe-Cr-Ni-C presentaron falla debido a delaminacióndel recubrimiento y por propagación de fisuras a partir del sustrato. 2007 artículo científico 0122-1701 https://www.redalyc.org/articulo.oa?id=84934036 es http://www.redalyc.org/revista.oa?id=849 Scientia Et Technica application/pdf Universidad Tecnológica de Pereira Scientia Et Technica (Colombia) Num.34 Vol.XIII

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