铝合金半固态浆料LSPSF法在线制备  

On-line Preparation Technology for Semi-solid Slurry of Aluminum Alloy Based on LSPSF (Low Shearing Pouring Semi-solid Forming) Method

作　　者：刘旭波[1] 杨湘杰[1] 郭洪民[2] 

机构地区：[1]南昌大学机电工程学院 [2]南昌大学材料科学与工程学院

出　　处：《特种铸造及有色合金》2008年第10期762-765,共4页Special Casting & Nonferrous Alloys

基　　金：国家自然科学基金资助项目(50474007);江西省自然科学基金资助项目(0650085)

摘　　要：利用自主开发的剪切低温浇注式半固态浆料制备(LSPSF)工艺装置,研究了不同浇注温度和输送管转速对A356、A380铝合金半固态浆料组织的影响。结果表明,在输送管倾角为20°、浆料蓄积器温度为500℃、转管转速为90～150r/min、浇注温度在液相线以上(30±10)℃时,可以获得良好的近球形半固态浆料微观组织。经过实际试生产,证明LSPSF工艺效率高、性能稳定,可以实现铝合金半固态浆料的在线制备。Effects of different pouring temperature and rotating velocity of rotating duct on microstructure of A356 aluminum alloy semi-solid slurry were observed based on the self-developed LSPSF technology. It is concluded that the desirable semi-solid slurry with spheroidized structure can be prepared successfully with rotating duct tilting angle of 20°at rotating velocity of 90~150 r/min and slurry reserving container temperature of about 500 ℃ as well as pouring temperature more than (30±10) ℃ above liquidus temperature. The practical production verifies that LSPSF method has the advantages of high processing efficiency and stable performance, which can effectively realize the on-line preparation of A356 aluminum alloy semi-solid slurry.

关 键 词：LSPSF 铝合金 半固态 在线制备 

分 类 号：TG146.21[一般工业技术—材料科学与工程] TG249.9[金属学及工艺—金属材料]