Damage Mechanisms in AISI 304 Borided Steel: Scratch and Daimler-Benz Adhesion Tests

Rodríguez-Castro, German Anibal, Jiménez-Tinoco, Luis Fernando, Méndez-Méndez, Juan Vicente, Arzate-Vázquez, Israel, Meneses-Amador, Alfonso, Martínez-Gutiérrez, Hugo, Campos-Silva, Iván

Damage Mechanisms in AISI 304 Borided Steel: Scratch and Daimler-Benz Adhesion Tests

AUTOR(ES)

Rodríguez-Castro, German Anibal, Jiménez-Tinoco, Luis Fernando, Méndez-Méndez, Juan Vicente, Arzate-Vázquez, Israel, Meneses-Amador, Alfonso, Martínez-Gutiérrez, Hugo, Campos-Silva, Iván

FONTE

Mat. Res.

DATA DE PUBLICAÇÃO

24/11/2015

RESUMO

In this study, damage mechanisms in the FeB/Fe2B coatings formed on the surface of AISI 304 steel are determined by adhesion tests. First, the boriding of the AISI 304 steel was carried out through the powder-pack method at 1223 K in the range from 2-10 h of exposure time. After treatment, Berkovich depth-sensing indentation test were conducted; the result showed tensil and compressive residual stresses in the FeB and Fe2B, respectively. The adhesion of borided steels was evaluated by the Daimler-Benz Rockwell-C and scratch test. Based on the scratch tracks, the chipping was the predominant mechanism at 2 and 6 h, with critical loads of 35 and 43 N, respectively; while spalliation was determined at 27 N for 10 h. Also, hertzian and tensil cracks, buckling and compressive delamination were determined in the AISI 304 borided steel by scanning electron microscope.