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

Materials Research

German Anibal Rodríguez-castro¹  Luis Fernando Jiménez-tinoco¹  Juan Vicente Méndez-méndez¹  Israel Arzate-vázquez¹  Alfonso Meneses-amador¹  Hugo Martínez-gutiérrez¹  Iván Campos-silva¹ 

关键词: boride layers;    scratch test;    residual stresses;    damage mechanisms;   

DOI  :  10.1590/1516-1439.025515

来源: SciELO

【 摘 要 】

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.

【 授权许可】

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