Residual Stress Investigation in SiC/MoSi2(p) Composites

• Published in: Advanced engineering materials Vol. 9; no. 5; pp. 393 - 399
• Main Authors: Sciti, D., Guicciardi, S., Celotti, G., Deluca, M., Pezzotti, G.
• Format: Journal Article
• Language: English
• Published: Weinheim WILEY-VCH Verlag 01.05.2007; WILEY‐VCH Verlag; Wiley-VCH
• Subjects: Ceramic matrix composites; Condensed matter: structure, mechanical and thermal properties; Deformation and plasticity (including yield, ductility, and superplasticity); Exact sciences and technology; Mechanical and acoustical properties of condensed matter; Mechanical properties of solids; Physics; Raman piezo-spectroscopy; Scanning electron microscopy; Raman spectra; Stress analysis; Composite materials; Stress distribution; Silicon carbides; Residual stresses; XRD; Molybdenum silicides; Thermal stresses
• ISSN: 1438-1656; 1527-2648
• DOI: 10.1002/adem.200600233

Thermal residual stresses in SiC matrix – MoSi2 reinforced composites were investigated by Raman microprobe spectroscopy and X‐ray diffraction. The introduction of 10 and 30 vol% MoSi2 particles generated compressive stresses in the SiC matrix, with magnitude of about –80 and –190 MPa, respectively. A typical residual stress map obtained through Raman spectroscopy for the SiC‐30 vol% MoSi2 composite is shown in the accompanying figure.