中文摘要：

采用自行设计的连续流变扩展成形技术装置对6201铝合金管材的制备进行研究。结果表明：连续流变扩展成形可以制备质量良好的6201铝合金管材。制备d80 mm的6201合金管材最佳艺工艺条件为：挤压轮冷却水流量为10-15 L/min;浇注温度为750-780℃;模具预热温度为500-560℃;挤压轮转速为15 r/min。制品在线水淬固溶并在150℃时效10 h后的抗拉强度为300 MPa,伸长率为10.2%,等效导电率为47.4%IACS,抗拉强度比Al-Mg-Si-Cu铝合金管母线提高15%,等效导电率提高3%。

英文摘要：

Continuous extending rheo-extrusion process for producing 6201 alloy tube was investigated by using a self-designed setup. The results show that 6201 alloy tube with good performance can be successfully manufactured by the proposed technique. The optimal process conditions for producing 6201 alloy tube with d80 mm are obtained as follows： the velocity of roll cooling water is 10--15 L/min; the casting temperature is 750-780℃; the mould preheating temperature is 500-560℃; the velocity of the roll is 15 r/min. After being water quenched for solid solution and artificial aging at 150 ℃ for 10 h, the tensile strength of the product reaches 300 MPa, the elongation is 10.2% and the equivalent conductivity reaches 47.4%IACS. Comparing with the conducting tube of Al-Mg-Si-Cu alloy, the tensile strength is improved by 15% and the equivalent conductivity is improved by 3%.