Nikkeli-titaaniseoksen muoto muistiseoksen rooli
Because nickel-titanium alloy shape memory alloy has unique nickel-titanium alloy shape memory alloy functions, it also has the advantages of super elasticity, wear resistance and corrosion resistance, so it has been widely used in many fields.
(1) Mechanical Engineering
Nitinol shape memory alloy was initially used in the machinery industry in pipe joints and fasteners. Specifically, at the connections of mechanical parts, pipes, etc., and the interface for aircraft refueling in the air, nickel-titanium alloy shape memory alloy is used to process a casing with an outer diameter 3% larger than the inner diameter, and the expansion of the casing is made at a certain temperature. The diameter is about 8%. During assembly, the casing is taken out of the liquid nitrogen and the tube is inserted from both ends. If the temperature rises to normal temperature, electric heating can be used to change the temperature. The nickel-titanium alloy shape memory alloy deforms at the aerial refueling interface. The nickel-titanium alloy The casing made of shape memory alloy shrinks to form a tight seal, thereby achieving a tight seal without oil leakage. The effect is much higher than that of traditional welding. Therefore, nickel-titanium alloy shape memory alloy is particularly suitable for aerospace, ships, oil pipelines and other fields. In locations where construction is inconvenient, pins made of nickel-titanium shape memory alloy can be installed into the holes for heating. Therefore, the temperature sensing of nickel-titanium alloy shape memory alloy is used to drive multiple functions to create robots, manipulators, etc.
(2) Construction industry
As mentioned earlier, the various properties of nickel-titanium alloy shape memory alloys, combined with the structure of nickel-titanium alloy shape memory alloys, can enhance the damping of the system and reduce the dynamic response of the structure, thereby producing various forms of damping energy-consuming devices. The nickel-titanium alloy shape memory alloy can also be used to design vibration isolators. The deformation of the nickel-titanium alloy shape memory alloy increases the energy consumption of deformation displacement and prevents the transmission of structural seismic energy to the upper structure, thereby protecting the upper structure and truly enhancing the seismic performance of the structure. .
(3) Aerospace industry
In aircraft hydraulic systems, basically each aircraft requires the use of eight hundred nickel-titanium alloy shape memory alloy joints. This type of fitting has been used on most U.S. Navy aircraft since the 1970s and has no record of failure. In addition, nickel-titanium alloy shape memory alloy can also be used in spacecraft antennas, electromechanical actuators, etc.
(4) Automobile industry
Nitinol shape memory alloy is mainly used in engine heat release fan clutches, exhaust nozzles, diesel engine radiators, etc.
(5) Medical field
Nitinol shape memory alloy has high mechanical properties and biocompatibility, making it widely used in the medical field. Such as orthodontics, surgical plastic surgery, cardiovascular minimally invasive, etc.; thrombus filters are actually new products of nickel-titanium alloy shape memory alloys; the straightened filters will gradually form a mesh over time after being implanted in a vein. , preventing more than 90% of blood clots from flowing to the heart, lungs and other organs. In addition, nickel-titanium alloy shape memory alloys are used in medical clinical trials in surgical sutures, artificial joints, artificial hearts, etc.
Characteristics of nickel titanium alloy shape memory alloy
1) Shape memory
Nitinol shape memory alloy will automatically restore its shape after a certain heat treatment. This change is the shape memory characteristic of nickel titanium alloy shape memory alloy. Shape memory can be divided into one-way shape memory, two-way shape memory and full-way shape memory according to the recovery status.
(2) Super elasticity
Nitinol shape memory alloy will deform when it is subjected to external force, and will return to its original shape after the external force is removed. This is the super elastic characteristic of nickel titanium alloy shape memory alloy. After the superelastic deformation of the nickel-titanium alloy shape memory alloy occurs, it will directly lead to martensitic phase transformation, and if the external force is removed, it will lead to reverse martensitic phase transformation.
(3) Damping property
Nitinol shape memory alloy has very good damping properties because of the self-adjustment of the phase change and the interface and motion generated during the phase change.
(4) Resistivity
During the deformation process of martensitic nickel-titanium alloy shape memory alloy, the relationship between resistance and strain is linear. When the phase transformation occurs, the slope of the curve will decrease, but the linear relationship will remain before and after the martensite phase.
The role of nickel titanium alloy shape memory alloy
Because nickel-titanium alloy shape memory alloy has unique nickel-titanium alloy shape memory alloy functions, it also has the advantages of super elasticity, wear resistance and corrosion resistance, so it has been widely used in many fields.
(1) Mechanical Engineering
Nitinol shape memory alloy was initially used in the machinery industry in pipe joints and fasteners. Specifically, at the connections of mechanical parts, pipes, etc., and the interface for aircraft refueling in the air, nickel-titanium alloy shape memory alloy is used to process a casing with an outer diameter 3% larger than the inner diameter, and the expansion of the casing is made at a certain temperature. The diameter is about 8%. During assembly, the casing is taken out of the liquid nitrogen and the tube is inserted from both ends. If the temperature rises to normal temperature, electric heating can be used to change the temperature. The nickel-titanium alloy shape memory alloy deforms at the aerial refueling interface. The nickel-titanium alloy The casing made of shape memory alloy shrinks to form a tight seal, thereby achieving a tight seal without oil leakage. The effect is much higher than that of traditional welding. Therefore, nickel-titanium alloy shape memory alloy is particularly suitable for aerospace, ships, oil pipelines and other fields. In locations where construction is inconvenient, pins made of nickel-titanium shape memory alloy can be installed into the holes for heating. Therefore, the temperature sensing of nickel-titanium alloy shape memory alloy is used to drive multiple functions to create robots, manipulators, etc.
(2) Construction industry
As mentioned earlier, the various properties of nickel-titanium alloy shape memory alloys, combined with the structure of nickel-titanium alloy shape memory alloys, can enhance the damping of the system and reduce the dynamic response of the structure, thereby producing various forms of damping energy-consuming devices. The nickel-titanium alloy shape memory alloy can also be used to design vibration isolators. The deformation of the nickel-titanium alloy shape memory alloy increases the energy consumption of deformation displacement and prevents the transmission of structural seismic energy to the upper structure, thereby protecting the upper structure and truly enhancing the seismic performance of the structure. .
(3) Aerospace industry
In aircraft hydraulic systems, basically each aircraft requires the use of eight hundred nickel-titanium alloy shape memory alloy joints. This type of fitting has been used on most U.S. Navy aircraft since the 1970s and has no record of failure. In addition, nickel-titanium alloy shape memory alloy can also be used in spacecraft antennas, electromechanical actuators, etc.
(4) Automobile industry
Nitinol shape memory alloy is mainly used in engine heat release fan clutches, exhaust nozzles, diesel engine radiators, etc.
(5) Medical field
Nitinol shape memory alloy has high mechanical properties and biocompatibility, making it widely used in the medical field. Such as orthodontics, surgical plastic surgery, cardiovascular minimally invasive, etc.; thrombus filters are actually new products of nickel-titanium alloy shape memory alloys; the straightened filters will gradually form a mesh over time after being implanted in a vein. , preventing more than 90% of blood clots from flowing to the heart, lungs and other organs. In addition, nickel-titanium alloy shape memory alloys are used in medical clinical trials in surgical sutures, artificial joints, artificial hearts, etc.
