Influence of the mechanical and metallurgical state of an Al-Mg alloy on the surface integrity in ultraprecision machining



Título del documento: Influence of the mechanical and metallurgical state of an Al-Mg alloy on the surface integrity in ultraprecision machining
Revista: Journal of the Brazilian Society of Mechanical Sciences and Engineering
Base de datos: PERIÓDICA
Número de sistema: 000312176
ISSN: 1678-5878
Autores: 1






Instituciones: 1Universidade de Sao Paulo, Departamento de Engenharia Mecanica, Sao Carlos, Sao Paulo. Brasil
Año:
Periodo: Jul-Sep
Volumen: 25
Número: 3
Paginación: 222-228
País: Brasil
Idioma: Inglés
Tipo de documento: Artículo
Enfoque: Experimental
Resumen en inglés This work presents the experimental results of the facing turning of an Al-Mg alloy. This aluminium alloy was mechanically and metallurgically modified, by means of cold rolling reduction and refining grain size previous to machining. The samples were cut and compared with samples in the as-received form, machined under the same cutting conditions. Surface finishing and work hardening were measured. Results show that theoretical surface roughness values are always smaller than the measured ones for all samples. Also, the surface roughness of the as-received samples is larger than that of mechanically modified samples. This difference of surface roughness was attributed to the swelling effect of the material. Microhardness values of the machined samples showed a decreasing trend with increasing loads. The surface of the cold rolled sample did not present a detectable microhardness alteration. Optical microscopy was used to observe qualitative aspects of the machined surface
Disciplinas: Ingeniería
Palabras clave: Ingeniería de materiales,
Ingeniería mecánica,
Maquinado,
Ultraprecisión,
Diamante,
Superficies,
Daño,
Aleaciones
Keyword: Engineering,
Materials engineering,
Mechanical engineering,
Machining,
Ultraprecision,
Diamond,
Surfaces,
Damage,
Alloys
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