Vol.28 No.7 白月龙等：流变压铸工艺参数对半固态A356铝合金充填性的影响 649。 【1可毛卫民，赵爱民。崔成林.球状初晶半固态金属浆料或连 金浆料直接成形方法及装置：中国专利，02104349.3. 铸坯料的制备方法及装置：中国专利00109540.4.2000 2002-03-01 -07-03 [1习毛卫民，杨继莲赵爱民等.浇注温度对AIS,Mg合金半 [14 毛卫民，赵爱民。崔成林。球状初品半固态金属浆料或合 固态组织的影响.北京科技大学学报.2001,23(1)：38 Effect of technological parameters on filling behavior of semi-solid A356 alloy by rheocasting BAI Yuelong,MAO Weim in,GAO Songfu,LI Qiang Materials Science and Engineering School University of Science and Techmology Beijing Beijing 100083.Chima ABSTRACT The effect of forming temperature injection pressure and piston velocity on the filling ability of semi-solid A356 aluminum alloy slurry were investigated.It is shown that a higher forming temperature helps to the good filling ability,and injection pressure and piston velocity have important effect on the fill- ing ability.The higher the injection pressure,or the higher the piston velocity,the better the filling ability is.Besides the thickness of a sample piece has great effect on the filling ability,and the thicker the sample piece,the better the filling ability.The results also show that the microstructure dist ribution of A356 semi- solid alloy is homogeneous,which is helpful to high quality castings. KEY WORDS A356 aluminum alloy;semi-solid processing:rheocasting;filling behavior[ 13] 毛卫民, 赵爱民, 崔成林.球状初晶半固态金属浆料或连 铸坯料的制备方法及装置:中国专利, 00109540.4.2000 -07-03 [ 14] 毛卫民, 赵爱民, 崔成林.球状初晶半固态金属浆料或合 金浆料直接成形方法及装置:中国专利, 02104349.3. 2002-03-01 [ 15] 毛卫民, 杨继莲, 赵爱民, 等.浇注温度对 AlSi 7Mg 合金半 固态组织的影响.北京科技大学学报, 2001 , 23(1):38 Effect of technological parameters on filling behavior of semi-solid A356 alloy by rheocasting B AI Y uelong , MAO Weimin , GAO Songfu , LI Qiang Materials S cience and Engineering S chool, University of Science and Technology Beijing, Beijing 100083 , C hina ABSTRACT The effect of forming temperature , injection pressure and piston velocity on the filling ability of semi-solid A356 aluminum alloy slurry were investigated .It is shown that a hig her forming temperature helps to the good filling ability , and injection pressure and piston velocity have impo rtant effect on the fill￾ing ability .The higher the injectio n pressure , or the higher the piston velocity , the better the filling ability is .Besides the thickness of a sample piece has great effect on the filling ability , and the thicker the sample piece , the better the filling ability .The results also show that the microstructure distribution of A356 semi￾solid alloy is homogeneous, w hich is helpful to high quality castings . KEY WORDS A356 aluminum alloy ;semi-solid processing ;rheocasting ;filling behavior Vol.28 No.7 白月龙等:流变压铸工艺参数对半固态 A356 铝合金充填性的影响 · 649 ·