Composites with ultra high damping capacity based on powder metallurgy shape memory alloys

✍ Scribed by M. Barrado; G.A. López; M.L. Nó; J. San Juan

• Publisher: Elsevier Science
• Year: 2009
• Tongue: English
• Weight: 633 KB
• Volume: 521-522
• Category: Article
• ISSN: 0921-5093
• DOI: 10.1016/j.msea.2008.10.075

✦ Synopsis

New high-damping metal matrix composites have been developed, by embedding powders of Cu-Al-Ni shape memory alloys with two different metallic matrices (In-10 wt.%Sn and In-Sn eutectic alloys). The damping properties have been characterized using a sub-resonant torsion pendulum. High damping values were obtained in a wide range of temperature. In the present work, the influence of the matrix and the shape memory alloy particles, on the damping properties of the composites, is studied and discussed. A synergetic effect from both contributions, matrix and particles, was observed.