Preparation of composite type light high-strength nickel-titanium memory alloy-based high damping material

A nickel-titanium memory alloy and composite technology, which is applied in the field of preparation of high damping materials, can solve the problems of difficulty in achieving damping effect and low volume fraction of nickel-titanium memory alloy, and achieve excellent damping capacity, good comprehensive mechanical properties, and bearing capacity. improved effect
CN101407867BInactive Publication Date: 2010-12-29SOUTH CHINA UNIV OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SOUTH CHINA UNIV OF TECH
Publication Date
2010-12-29
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a preparation method of a compound type light-weight high-intensity nickel-titanium memorial alloy base high damping material. In the method, a powder sintering method is mainly used as a foundation and a pressureless infiltration technology is used as assistance; a pore-creating technology is firstly adopted; and a unit metal powder cascade sintering method is used for preparing a porous nickel-titanium alloy the holes of which are uniformly distributed; and then the pressureless infiltration technology is adopted for inducing the pure magnesium or magnesium alloy phase with high intrinsic damping, low density and micron scale into the porous nickel-titanium alloy, thereby preparing the high-damping magnesium(or magnesium alloy) / nickel-titanium memorial alloy basecompound material the damping control phase of which is magnesium or the magnesium alloy. The compound nickel-titanium memorial alloy prepared by the invention still has the shape memory effect and the superelasticity action as well as has weight lighter than that of the compact nickel-titanium memorial alloy and intensity and damping capacity more excellent than that of the common porous nickel-titanium memorial alloy. The preparation method has good technical suitability, simple preparation process and low cost, and can be used for manufacturing the light-weight high-intensity compound damping materials, damping structures and apparatuses.
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Description

technical field

[0001] The invention relates to a preparation technology of a high damping material, in particular to a preparation method of a nickel-titanium memory alloy-based composite material with good damping capacity, light weight, high strength and stable superelastic performance. Background technique

[0002] The control of vibration, shock and noise and the regulation of kinetic energy are becoming increasingly important in various civil and industrial (including military) structures, components and facilities. For example, the increase of mechanical operating speed will generate strong vibration and noise, which will interfere with the automatic control system, reduce the measurement accuracy of the instrument or cause fatigue damage or even fatigue damage; in some requirements, the impedance matching of the connection part and the flexible connection of the interface of the material components with different mechanical properties can be realized. Occasions (such...

Claims

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