Defects Interaction on the Mechanical Properties during Transition Formation of (Mo, Cr)₃Si Intermetallic Alloys

I. Rosales^1*, H. Martínez²

¹Centro de Investigación en Ingeniería y Ciencias Aplicadas-FCQ e Ing. UAEM, Av. Universidad 1001, Col. Chamilpa, Cuernavaca, México.
²Instituto de Ciencias Físicas, Universidad Nacional Autónoma de México, Cuernavaca, México.

DOI: 10.4236/msce.2014.211009                

Abstract

Molybdenum silicides alloys with different Mo and Cr additions were produced by the arc cast method. The microstructure revealed mostly single phase structure. Mechanical properties were evaluated in the alloys, showing a decreasing behavior on microhardness. Fracture toughness values were obtained from cracks produced by Vickers indentation technique, showing that ternary alloying did not have a significant effect. Vacancy studies demonstrated that thermal vacancies along the transition line slightly affected the mechanical behavior.

Keywords

Physical Properties, Silicides, Microindentation, Fracture Toughness, X-Ray Diffraction (XRD)

Conflicts of Interest

The authors declare no conflicts of interest.

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