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发明授权
CN106702231B 一种具有高导热性能的铝基高阻尼合金及其制备方法 有权 转让

一种具有高导热性能的铝基高阻尼合金及其制备方法
摘要：
本发明公开了一种具有高导热性能的铝基高阻尼合金及其制备方法。按重量百分比计，合金的化学组分为：Si:2‑8%,Cu:1‑2%,Zn:10‑40%,Sn:1‑6%,In:1‑2%,Co:0.5‑1%,Hf:0.2‑0.8%,B:0.1‑0.3%，余量为Al。本发明提供的具有高热导率的铸造铝基高阻尼合金材料，该材料具有传统铝基高阻尼合金的力学性能和阻尼性能：抗拉强度为320‑360MPa，弹性模量为78‑89GPa，屈服强度为170‑210MPa，延伸率为0.2‑5%，SDC=4‑20%。并具有传统铝基阻尼合金不具备的高导热性能，在保证现有铸造用铝基高阻尼合金阻尼性能和力学性能的基础上，将合金的热导率从65‑98W/m.K左右提高到了190‑210W/m.K，可以大规模应用于温度较高并且需要减振的场合。
摘要（英）：

The invention discloses aluminum-based high damping alloy with the high heat-conducting property and a preparation method thereof. The aluminum-based high damping alloy comprises, by weight, 2%-8% of Si, 1%-2% of Cu, 10%-40% of Zn, 1%-6% of Sn, 1%-2% of In, 0.5%-1% of Co, 0.2%-0.8% of Hf, 0.1%-0.3% of B and the balance Al. According to a casting aluminum-based high damping alloy material with high thermal conductivity and provided by the invention, the material has the mechanical property and damping property of traditional aluminum-based high damping alloy, the tensile strength is 320-360MPa, the elasticity modulus is 78-89GPa, the yield strength is 170-210MPa, ductility is 0.2%-5%, and SDC is equal to 4%-20%. The heat-conducting property which cannot be achieved by the traditional aluminum-based damping alloy is further achieved. On the basis of guaranteeing the damping property and mechanical property of existing casting aluminum-based high damping alloy, the thermal conductivity of the alloy is increased to 190-210W/m.K from about 65-98W/m.K, and thus the aluminum-based high damping alloy and the preparation method thereof can be applied to the places where the temperature is high and vibration attenuation is required in a large-scale mode.

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