Near co-crystallizing type cast aluminum silicon alloy material with high heat conductivity and production method thereof
A technology for casting aluminum-silicon alloys and alloy materials, which is applied in the field of high thermal conductivity near-eutectic casting aluminum-silicon alloy materials, can solve problems such as poor thermal conductivity, and achieves elimination of casting stress, improvement of thermal conductivity, excellent casting performance and thermal conductivity. performance effect
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[0024] The beneficial effects of the present invention are further illustrated in conjunction with examples.
[0025] (1) Chemical composition control:
[0026] The high thermal conductivity near-eutectic cast aluminum-silicon alloy material of the present invention is a near-eutectic aluminum-silicon alloy, which contains at least one of the three components of Sr, Ca and B. Sr, Ca and B can effectively improve the performance of the aluminum alloy. The thermal conductivity of the material. In the alloy material of the present invention, Si 8.5~13%, Sr 0.005~0.1%, Ca 0.001~0.1%, B 0.001~0.1%, Fe less than 0.7%, Mg less than 0.5%, Cu less than 0.3% %, containing less than 0.1% of Mn, less than 0.1% of Ti, less than 0.05% of other single impurity elements, less than 0.25% in total, and the rest are Al and unavoidable impurities. The foregoing percentages are all percentages by mass.
[0027] The composition contained in the alloy material of the present invention can be any ...
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