title: Metallographic preparation of Zn-21Al-2Cu alloy for analysis by electron backscatter diffraction (EBSD).
abstract: Samples of Zn-21Al-2Cu alloy (Zinalco) that will be heavily deformed were prepared using five different manual mechanical metallographic methods. Samples were analyzed before tensile testing using the orientation imaging microscopy-electron backscatter diffraction (OIM-EBSD) technique. The effect of type and particle size during the final polishing stages for this material were studied in order to identify a method that produces a flat, damage free surface with a roughness of about 50 nm and clean from oxide layers, thereby producing diffraction patterns with high image quality (IQ) and adequate confidence indexes (CI). Our results show that final polishing with alumina and silica, as was previously suggested by other research groups for alloys that are difficult to prepare or alloys with low melting point, are not suitable for manual metallographic preparation of this alloy. Indexes of IQ and CI can be used to evaluate methods of metallographic preparation of samples studied using the OIM-EBSD technique.
authors.affiliation: 1Facultad de Ingeniería,Universidad Autónoma de San Luis Potosí,San Luis Potosí,San Luis Potosí,78290,México.
authors.forename: M G
authors.initials: MG
authors.lastname: Rodríguez-Hernández
authors.affiliation: 1Facultad de Ingeniería,Universidad Autónoma de San Luis Potosí,San Luis Potosí,San Luis Potosí,78290,México.
authors.forename: E E
authors.initials: EE
authors.lastname: Martínez-Flores
authors.affiliation: 2Instituto de Investigaciones en Materiales,Universidad Nacional Autónoma de México,D. F.,04519,México.
authors.forename: G
authors.initials: G
authors.lastname: Torres-Villaseñor
authors.affiliation: 3Departamento de Ciencia e Ingeniería de Materiales,Universidad Rey Juan Carlos,Móstoles,Madrid,28933,España.
authors.forename: M Dolores
authors.initials: MD
authors.lastname: Escalera
mesh_terms: D000497:Alloys / Q000138:chemical synthesis* / Q000737:chemistry*; D003300:Copper / Q000737:chemistry*; D046529:Microscopy, Electron, Transmission; D017967:Zinc Compounds / Q000737:chemistry*
chemical_list: D000497:Alloys; D017967:Zinc Compounds; D003300:Copper