连续铸挤Al-Mg-Sc合金线材工艺  

Study on the continuous cast extrusion process for producing Al-Mg-Sc alloy wire

作　　者：张雪飞[1] 石路[1] 李俊鹏[1] 李罡[1] 温景林[1] 

机构地区：[1]东北大学材料与冶金学院,辽宁沈阳110004

出　　处：《材料与冶金学报》2005年第4期313-316,共4页Journal of Materials and Metallurgy

基　　金：国家自然科学基金;上海宝钢集团联合资助项目(50274020)

摘　　要：采用连续铸挤工艺生产Al-Mg-Sc合金线材.对Al-Mg-Sc合金线材质量的影响因素:合金化工艺、铸挤轮转速、浇注温度、冷却水流量等进行了研究.结果表明:采用合理的熔炼工艺,在铸挤轮速度15 r/min,冷却水流量5L/min,熔体浇注温度720～730℃的情况下,线材表面质量好,气孔少.320℃人工时效3h,细小析出相Al3Sc粒子弥散分布在铝基体中.Continuous casting and extrusion （ CASTEX ） technology is adopted to produce Al-Mg-Sc alloy wire. The factors affecting the quality of Al-Mg-Sc alloy wire such as alloying technology, CASTEX wheel velocity, pouring temperature of alloy, and flux of cooling water arc studied. Experimental results indicate that Al-Mg-Sc wire with good surface quality and less porsitics can be gained by adopting reasonable melting technology, under the condition of velocity of 15 r/min, flux of cooling water of 5 L/min, pouring temperature of 720 -730 ℃. Fine Al3Sc are uniformly dispersed in or-Al when aged for 3 h at 320 ℃.

关 键 词：连续铸挤 AL-MG-SC合金 挤压 

分 类 号：TG146.2[一般工业技术—材料科学与工程]