Preparation of particle reinforced damping porous nickel-titanium memory alloy based composite material
A damping composite material and particle reinforcement technology, which is applied in the field of high damping material preparation, can solve the problems of low specific damping capacity, low damping value, high density of dense nickel-titanium alloy, etc., and achieve good damping performance, improved superelasticity, The effect of increased carrying capacity
Inactive Publication Date: 2010-08-11
SOUTH CHINA UNIV OF TECH
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The invention provides a second-phase particle-reinforced damping porous nickel-titanium memory alloy-based composite material for the disadvantages of low strength and damping value when porous nickel-titanium memory alloy is used as a damping material, high density of dense nickel-titanium alloy, and low specific damping capacity. Material preparation method for the design and manufacture of lightweight, high-strength, high-reliability smart damping structures
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Abstract
The invention discloses a method for preparing a granular reinforced damping porous nickel-titanium memorial alloy based composite material. The method comprises: after evenly mixing silicon granules or aluminum oxide granules of nickel-titanium metal powder and a controlled material according to a certain proportion by adopting a step powder-sintering method, pressing the granules into a raw blank, and then integrally sintering the pressed granules once by adopting a step heating mode to prepare the composite material, wherein the silicon granules or the aluminum oxide granules account for 5to 15 percent of weight of the raw blank. Through introducing the porous granular controlled material with low density and micron size into the nickel-titanium memorial alloy, the method quantitatively controls damping and mechanical properties of the nickel-titanium alloy, and finally obtains the novel high-damping porous nickel-titanium alloy based composite material. The composite porous nickel-titanium memorial alloy still has shape memory effect and hyperelastic deformation capability, and has better strength and damping capability compared with the common porous nickel-titanium alloy; and the method has the advantages of good adaptability, simple preparation process and low cost, and can be used for manufacturing composite damping materials, damping structures and devices.
Description
technical field The invention relates to the preparation technology of high-damping materials, in particular to a preparation method of porous nickel-titanium memory alloy-based composite materials with good damping characteristics, light weight, high strength and stable superelastic performance. Background technique With the development of industrialization and society, people pay more and more attention to the control of vibration, impact, noise and other hazards generated by various transportation and delivery vehicles, production equipment and tools, and the damping capacity of materials and structures has become an evaluation material. An important indicator of performance. The damping capacity of a material refers to its ability to quickly attenuate energy such as mechanical vibration, impact and noise. Especially in recent years, with the rapid development of aviation and aerospace technology and the rapid increase of structures and components serving under the condi...
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IPC IPC(8): C22C1/04C22C1/08
Inventor 张新平李大圣熊志鹏
Owner SOUTH CHINA UNIV OF TECH