Additive for increasing martensite temperature of Mn-Cu damping alloy and use method of additive
A damping alloy and additive technology, applied in the field of Mn-Cu damping alloy additives, can solve problems such as poor thermal processing performance, casting defects, and easy cracking, and achieve low production costs, no heat treatment process, and simple processing methods.
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Embodiment 1
[0015] An additive used to increase the martensitic temperature of Mn-Cu alloy, the composition of the additive is: Zn: 5%, Eu: 1.2%, Al: 1.8%, Hf: 0.2%, Ce: 2.1 %, Cr: 1.2%, Sn: 4.6%, and the balance is Fe. When smelting common Mn-Cu alloys with a Mn content of 40-60wt%, such as Incramute alloys (58%Cu-40%Mn-2%Al), take the alloy at 1225°C in argon-protected vacuum induction melting furnace Melt in the medium spinel crucible and keep it warm for 10 minutes, then add 2.4% of the additive by weight of the alloy, stir well and keep it warm for 10 minutes. Iron mold or sand mold casting is then performed. After casting, cool to room temperature, demould, and clean the casting surface. The casting is homogenized at 900°C for 12 hours, and then cooled in the furnace to obtain an alloy with high damping performance. After the alloy is cooled with the furnace, the martensite temperature is about 68 ℃. The tensile strength of the obtained product is 560MPa, the modulus of elastici...
Embodiment 2
[0017] An additive used to increase the martensite temperature of Mn-Cu alloy, the composition of the additive is: Zn: 6%, Eu: 1.8%, Al: 2.5%, Hf: 0.3%, Ce: 2.6 %, Cr: 1.4%, Sn: 6.8%, and the balance is Fe. When smelting common Mn-Cu alloys with Mn content of 40-60wt%, such as Sonoston alloy (54.25Mn-37%Cu-4.25%Al-3%Fe-1.5%Ni), take the alloy at 1235°C under argon The spinel crucible was melted in the gas-shielded vacuum induction melting furnace and kept warm for 10 minutes, and then 3.2% of the alloy weight percentage was added to the additive, stirred thoroughly and kept warm for 10 minutes. Iron mold or sand mold casting is then performed. After casting, cool to room temperature, demould, and clean the casting surface. The casting is homogenized at 900°C for 12 hours, and then cooled in the furnace to obtain an alloy with high damping performance. After the alloy is cooled with the furnace, the martensite temperature is about 74 °C. The resulting product has a tensile ...
Embodiment 3
[0019] An additive for increasing the martensitic temperature of Mn-Cu alloy, the composition of the additive is: Zn: 5.3%, Eu: 1.5%, Al: 2.1%, Hf: 0.3%, Ce: 2.6 %, Cr: 1.4%, Sn: 4.8%, and the balance is Fe. When smelting common Mn-Cu alloys with a Mn content of 40-60wt%, such as Incramute alloys (58%Cu-40%Mn-2%Al), take the alloy at 1245°C in argon-protected vacuum induction melting furnace Melt in the medium spinel crucible and keep it warm for 10 minutes, then add additives accounting for 3.6wt% of the alloy composition, stir well and keep it warm for 10 minutes. Iron mold or sand mold casting is then performed. After casting, cool to room temperature, demould, and clean the casting surface. The casting is homogenized at 900°C for 12 hours, and then cooled in the furnace to obtain an alloy with high damping performance. After the alloy is cooled with the furnace, the martensite temperature is about 82 °C. The resulting product has a tensile strength of 573MPa, an elasti...
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