Evaluation of the Mechanical Properties of Naturally Grown Multilayered Oxides Formed on HCM12A Using Small Scale Mechanical Testing

M. D. Abad, S. Parker*, D. Frazer, M. Rebelo de Figueiredo, A. Lupinacci, K. Kikuchi, P. Hosemann

*Autor correspondiente de este trabajo

Producción científica: Artículo en revista indizadaArtículorevisión exhaustiva

20 Citas (Scopus)

Resumen

The microstructure and mechanical integrity of protective multilayered oxide films grown in liquid metal on F/M steel HCM12A was investigated utilizing Raman spectroscopy, nanoindentation and micro-cantilever testing methods. The Raman spectra showed a Fe3O4 outer layer and a Cr-rich spinel structure inner layer. The nanoindentation results showed a higher hardness value for the inner layer than for the outer layer. In addition, the hardness of the diffusion layer in between the inner layer and the bulk steel was measured. Quantitative fracture properties were obtained of the steel/oxide interface and within the oxide layers utilizing micro-cantilever testing. Furthermore the strength and elastic properties of the multilayered oxide film were measured and it was found that the porous structure in the inner Fe–Cr oxide limits the integrity of the steel/oxide interface.

Idioma originalInglés
Páginas (desde-hasta)211-231
Número de páginas21
PublicaciónOxidation of Metals
Volumen84
N.º1-2
DOI
EstadoPublicada - 7 jun 2015
Publicado de forma externa

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