挤压温度对铝合金材料组织和性能的影响研究

Effect of extrusion temperature on Microstructure and properties of aluminum alloy

铝合金材料因其密度较低、热导性强以及高比强被广泛应用于各个行业,通过实验分析铸锭坯料温度、挤压筒温度及工模具温度对铝合金材料组织和性能的影响。实验结果表明,铝合金材料组织比较细小且分布均匀,当挤压温度超过一定范围时,铝合金材料发生明显改变,由原来的韧性断裂方式变成韧性与脆性共存的混合断裂方式。

Aluminum alloy materials are widely used in various industries because of their low density,strong thermal conductivity and high specific strength.The effects of the temperature of ingot billet,the temperature of the extrusion cylinder and the temperature of the die on the microstructure and properties of the aluminum alloy materials are analyzed by experiments.The experimental results show that the microstructure of the aluminum alloy material is very small and the distribution is uniform.When the extrusion temperature exceeds a certain range,the aluminum alloy material changes obviously,from the original ductile fracture mode to the mixed fracture mode of the coexistence of toughness and brittleness.