Acoustic emission from deformed Mg–Y–Nd alloy and this alloy reinforced with SiC particles

• Published in: Journal of alloys and compounds Vol. 504; no. 2; pp. L28 - L30
• Main Authors: TROJANOVA, Z, SZARAZ, Z, CHMELIK, F, LUKAC, P
• Format: Journal Article
• Language: English
• Published: Kidlington Elsevier B.V 20-08-2010; Elsevier
• Subjects: Acoustic emission; Condensed matter: structure, mechanical and thermal properties; Deformation and plasticity (including yield, ductility, and superplasticity); Exact sciences and technology; Magnesium alloy; Mechanical and acoustical properties of condensed matter; Mechanical properties of solids; Particulate reinforced composite; Physics; Plastic deformation; Twinning; Acoustic emission; Twinning; Plastic deformation; Particulate reinforced composite; Magnesium alloy; Metal matrix composite; Magnesium alloys; Yttrium alloys; Dislocation glide; Neodymium alloys; Time dependence; Silicon carbide; Composite materials
• ISSN: 0925-8388; 1873-4669
• DOI: 10.1016/j.jallcom.2010.05.138

Mg–5Y–4Nd alloy and Mg–5Y–4Nd/SiC metal matrix composite were deformed at ambient temperature. Acoustic emission (AE) was measured during deformation. The time dependence of the count rate was measured with the two levels of discrimination. Pronounced maximum was observed at the onset of plastic deformation. It was ascribed to massive twinning and glide of dislocations in the alloy. In the composite, the AE activity was lower in comparison with the alloy and two acoustic emission peaks were detected.