Research progress and prospects of application for damping aluminum matrix composites
Vibration-reduction for the equipments in areas of aeronautics,aerospace,ship and ordnance,needs the structural materials with good damping capacity.However,common metal structural materials exhibit poor damping capacity,and conventional damping alloys possess high density or lower strength,thus,it is very necessary to develop light-weight structural materials with good damping capacity.Among light-weight damping structural materials,damping aluminum matrix composites have been received great attention.So far,in domestic and abroad,for damping aluminum matrix composites,great progress in materials manufacturing,typical properties and the effect of vibration reduction has been made,showing good prospect for applications.At present,two series of damping composites,including(Al alloy)/Gr(/SiCp)and(Al alloy)/(Zn-Al)(/SiCp),have successfully been developed.These composites possess the room-temperature damping capacity(Q-1)of(6～15)×10-3,about 1～3 times higher than that of conventional aluminum alloys,while exhibiting the similar mechanical properties to 2xxx or 7xxx series aluminum alloys.As compared with the corresponding aluminum alloy counterpart,the parts of damping aluminum matrix composites can realize vibration-reduction at 20%～40%.These damping composites may be used as structural parts near vibration sources and supporting parts for optoelectronic equipment.Future directions for damping aluminum matrix composites include further improving properties,decreasing density,increasing product types,establishing the property data set,strengthening the test of verification and reducing cost.
dampinglight-weightaluminum matrix compositepropertieseffect of vibration-reductionapplications
NETL
NSTL
万方数据
