TiNi-SS NiTi ribbon superelasticity _ temperature

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Original Title: TiNi-SS NiTi Ribbon Superelastic Introduction of nickel-titanium alloy NiTi alloy is a kind of shape memory alloy, which is a special alloy that can automatically restore its original shape at a specific temperature after plastic deformation. Its expansion ratio is more than 20%, its fatigue life is up to the seventh power of 110, its damping characteristic is 10 times higher than that of ordinary springs, and its performance is superior to that of current medical stainless steel, so it can meet the application needs of various engineering and medicine, and it is a very functional material. In addition to the shape memory function, shape memory alloy also has the characteristics of loss, corrosion resistance, high damping and superelasticity. Standard: Q/XB1516 Q/XB1520 Grade: TiNi-01 phase transition temperature: 20 ℃ -40 ℃; TiNi-02 phase transition temperature: 45 ℃ -90 ℃; TiNi-SS phase change temperature: 5 ℃ -15 ℃, TiNi-03 phase change temperature lt; 5 ℃; TiNi-YY phase transition temperature: 33 ℃ ± 3 ℃; TiNiCU phase transition temperature: As-Ms ≤ 5 ℃; TiNiNb phase change temperature: As-Ms < 150 ℃ Physical properties of nickel-titanium alloy: tensile strength: 850MPa; yield strength: 195 ~ 690MPa; elongation: 25 ~ 50% Chemical composition of nickel-titanium alloy memory wire: Ni: 55.4% -56.2%, C = 0.07, H = 0.005, O = 0.050, N = 0.05 TiNi shape memory alloy (SMA) is a kind of functional material. Besides its high specific strength, corrosion resistance, nonmagnetism and good biocompatibility, it also has unique shape memory properties and mechanical properties. It is used in aerospace, communication, medical treatment, automatic control,6al4v titanium bar, instrumentation, pipeline connection, glasses manufacturing and daily life. The comprehensive performance of TiNi shape memory alloy produced by Yhan Metal has reached the international level, and enjoys a high reputation in the domestic medical equipment, glasses manufacturing, mobile phone antenna and other industries. Performance characteristics of nickel-titanium alloy Phase Transformation and Properties of Nickel-Titanium Alloy As its name imply, nitinol is a binary alloy composed of nickel and titanium, which has two different crystal structure phase,titanium round bar, namely austenite phase and martensite phase, due to that change of temperature and mechanical pressure. The transformation sequence of NiTi alloy during cooling is parent phase (austenite phase)-R phase-martensite phase. The R phase is rhombohedral, and the austenite is cubic and hard when the temperature is higher (greater than the temperature at which the austenite starts), or when the load is removed (Deactivation). The shape is relatively stable. The martensite phase, on the other hand, is at a relatively low temperature (less than Mf: the temperature at which martensite ends) or when loaded (activated by an external force), hexagonal, ductile, repetitive, less stable, and more deformable. Special Properties of Nickel-Titanium Alloy . Shape memory properties (Shape memory) When the parent phase of a certain shape is cooled from above the Af temperature to below the Mf temperature to form martensite, the martensite is deformed below the Mf temperature and heated to below the Af temperature. With the reverse phase transformation, the material will automatically restore its shape in the parent phase. In fact, the shape memory effect is a thermally induced phase transformation process in NiTi alloys. Superelastic The so-called superelastic refers to the phenomenon that the specimen produces a strain far greater than the elastic limit strain under the action of external force, and the strain can be automatically restored when unloaded. That is to say, nickel titanium wire ,ti6al4v, in the parent phase state, due to the external stress, the stress-induced martensite transformation occurs, so the alloy shows different mechanical behavior from ordinary materials,wires, strips, flanges, forgings and pipe fittings. Products are used in petrochemical, aerospace, shipbuilding, energy, chemical industry,titanium tubing price, electronics, environmental protection, machinery and instrumentation and other fields. (13-6-81-71-31-45zx) Return to Sohu to see more Responsible Editor:. yunchtitanium.com

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