Manganese Copper Alloy
Manganese copper is a precision resistance alloy, usually supplied in wire, but also a small amount of plate, strip, in all kinds of instrumentation has a wide range of applications at the same time, the material is an ultra-high pressure force sensitive material, the upper limit of pressure measurement can be as high as 500 Pa. Manganese copper has a good piezoresistive effect is widely used in explosive bombardment, high-speed impact, dynamic fracture, new material synthesis and other high temperature and high pressure environment pressure measurement. The resistance change of manganese copper is approximately linear function with external pressure (i.e., the piezoresistive coefficient K is nearly constant), and the temperature coefficient of resistance is small, so the pressure measurement under dynamic high pressure can be transformed into the measurement of the resistance change of manganese copper by the sensor made of manganese copper as a sensitive element.
Cu-Mn alloy is a widely used damping material, belongs to the category of thermoelastic martensitic phase change. When these alloys are subjected to aging heat treatment at 300-600°C, the alloy organization transforms to ortho-martensitic twins, which are extremely unstable and will rearrange their motion when subjected to cross-vibrational stresses, thus absorbing large amounts of energy and exhibiting a damping effect.
Manganese copper with good piezoresistive effect is widely used for pressure measurement in high-temperature and high-pressure environments such as explosive blast, high-speed impact, dynamic fracture, and new material synthesis. The change in resistance of manganese copper is approximately a linear function of the external pressure (i.e., the piezoresistive coefficient K is nearly constant), and the temperature coefficient of resistance is small. By using a sensor made of manganese copper as a sensitive element, it is possible to convert the pressure measurement under dynamic high pressure into the measurement of the change in resistance of manganese copper.
BMn3-12 (also known as manganese copper) can be divided into precision type and shunt type according to the use, and the use temperature range is 0-45℃ and 0-100℃ respectively.
BMn40-1.5 (also called Kang copper) is a precision resistance alloy used earlier than BMn3-12 (also called manganese copper), its advantages are: it has a low resistance temperature coefficient, and the linear relationship of resistance-temperature curve is better than BMn3-12, so it can be used in a wider temperature range; its heat resistance is better than BMn3-12, and it can be used up to Its heat resistance is better than BMn3-12 and can be used up to 400℃, while the maximum use temperature of 3-12 manganese white copper is 300℃; its corrosion resistance is also better than BMn3-12. It also has good processability and needle welding. Its disadvantage is that the thermal potential of copper is too high, and it is not suitable for DC standard resistance and shunt in measuring instruments, but for AC precision resistance, sliding resistance, starting, adjusting transformer and resistance strain gauge. In addition, BMn40-1.5 can also be used as thermocouple and thermocouple compensation wire.
Cu-Mn system of high damping alloy is characterized by: the higher the Mn content (> 50%), the greater the strain; the longer the high temperature aging time, the higher the damping performance. However, each of these tendencies has a limit, beyond which the damping performance tends to decrease [1]. In addition, these damping alloys are very sensitive to the working temperature. When the temperature is the Neel point temperature, the atomic magnetic couples formed by every two neighboring Mn atoms will be arranged in an anti-magnetic order, forming anti-magnetic magnetic domains. When subjected to external motion, the magnetic domains produce motion and form internal dissipation, which is a damping mechanism unique to the Mn-Cu system of alloys. When the temperature exceeds the Neel point, this orderly arrangement of magnetic domains is disrupted and the damping performance decreases.
Cu-Mn alloy is a widely used damping material, belongs to the category of thermoelastic martensitic phase change. When these alloys are subjected to aging heat treatment at 300-600°C, the alloy organization transforms to ortho-martensitic twins, which are extremely unstable and will rearrange their motion when subjected to cross-vibrational stresses, thus absorbing large amounts of energy and exhibiting a damping effect.
Manganese copper with good piezoresistive effect is widely used for pressure measurement in high-temperature and high-pressure environments such as explosive blast, high-speed impact, dynamic fracture, and new material synthesis. The change in resistance of manganese copper is approximately a linear function of the external pressure (i.e., the piezoresistive coefficient K is nearly constant), and the temperature coefficient of resistance is small. By using a sensor made of manganese copper as a sensitive element, it is possible to convert the pressure measurement under dynamic high pressure into the measurement of the change in resistance of manganese copper.
BMn3-12 (also known as manganese copper) can be divided into precision type and shunt type according to the use, and the use temperature range is 0-45℃ and 0-100℃ respectively.
BMn40-1.5 (also called Kang copper) is a precision resistance alloy used earlier than BMn3-12 (also called manganese copper), its advantages are: it has a low resistance temperature coefficient, and the linear relationship of resistance-temperature curve is better than BMn3-12, so it can be used in a wider temperature range; its heat resistance is better than BMn3-12, and it can be used up to Its heat resistance is better than BMn3-12 and can be used up to 400℃, while the maximum use temperature of 3-12 manganese white copper is 300℃; its corrosion resistance is also better than BMn3-12. It also has good processability and needle welding. Its disadvantage is that the thermal potential of copper is too high, and it is not suitable for DC standard resistance and shunt in measuring instruments, but for AC precision resistance, sliding resistance, starting, adjusting transformer and resistance strain gauge. In addition, BMn40-1.5 can also be used as thermocouple and thermocouple compensation wire.
Cu-Mn system of high damping alloy is characterized by: the higher the Mn content (> 50%), the greater the strain; the longer the high temperature aging time, the higher the damping performance. However, each of these tendencies has a limit, beyond which the damping performance tends to decrease [1]. In addition, these damping alloys are very sensitive to the working temperature. When the temperature is the Neel point temperature, the atomic magnetic couples formed by every two neighboring Mn atoms will be arranged in an anti-magnetic order, forming anti-magnetic magnetic domains. When subjected to external motion, the magnetic domains produce motion and form internal dissipation, which is a damping mechanism unique to the Mn-Cu system of alloys. When the temperature exceeds the Neel point, this orderly arrangement of magnetic domains is disrupted and the damping performance decreases.
Nickel-based high-temperature alloys
Difference between iron-based and nickel-based high-temperature alloys
The role of each element in nickel-based high-temperature alloys
Applications of high-temperature nickel-based alloys
Applications of iron-based high-temperature alloys
What is the difference between iron-based powder metallurgy materials and copper-based powder metallurgy materials?
Iron-based high damping alloys
Highly damped alloy
Manganese copper high damping alloy