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Microstructural characterization of as-cast Co–B alloys

2006; Elsevier BV; Volume: 58; Issue: 4 Linguagem: Inglês

10.1016/j.matchar.2006.05.014

1873-4189

Maria Ismênia Sodero Toledo Faria, T. Leonardi, Gilberto Carvalho Coelho, Carlos Ângelo Nunes, Roberto Ribeiro de Avillez,

Microstructure and Mechanical Properties of Steels

This work presents results of microstructural characterization of as-cast Co–B alloys. Samples of different compositions were prepared by arc melting Co (min. 99.97%) and B (min. 99.5%) under argon atmosphere in a water-cooled copper crucible with non-consumable tungsten electrode and titanium getter. All samples were characterized by scanning electron microscopy (SEM) in back-scattered electron (BSE) mode, X-ray diffraction (XRD) and wavelength dispersive spectrometry (WDS). A good agreement is observed between the obtained microstructures and those expected by the currently accepted Co–B phase diagram.