Analysis of transient mechanical loss due to thermal stresses in metal matrix composites

Mechanical spectroscopy has been used to study the thermal stress relaxation at the interfaces in magnesium matrix composites. The mechanical loss spectra measured as a function of temperature show an intrinsic component superimposed on transient damping. A model of thermal stress relaxation by dislocation motion controlled by a solid friction mechanism, where the transient damping depends non linearly on (T) over dot/omega is developed. A systematic method is developed to identify the correct level of transient damping. (C) 2009 Elsevier B.V. All rights reserved.


Published in:
Materials Science And Engineering A-Structural Materials Properties Microstructure And Processing, 521-22, 310-313
Presented at:
15th International Conference on Internal Friction and Mechanical Spectroscopy (ICIFMS-15), Perugia, ITALY, Jul 20-25, 2008
Year:
2009
Keywords:
Laboratories:




 Record created 2010-11-30, last modified 2018-03-17


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