超声功率-凝固压力协同作用对真空差压铸造铝合金二次枝晶间距的影响
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摘要
通过测试与分析不同超声功率与凝固压力下真空差压铸造ZL114A铝合金的二次枝晶间距,研究超声功率与凝固压力协同作用对真空差压铸造铝合金二次枝晶间距的影响,建立真空差压铸造ZL114A铝合金二次枝晶间距与超声功率及凝固压力的关系。结果表明:在超声功率和凝固压力协同作用下,超声效应与凝固压力挤渗效应共同影响真空差压铸造铝合金二次枝晶间距;在超声功率600 W与凝固压力350 kPa协同作用下,真空差压铸造铝合金二次枝晶间距最小;当凝固压力小于300 kPa时,超声功率对铝合金二次枝晶间距影响较大;当凝固压力大于300 kPa时,凝固压力对真空差压铸造ZL114A铝合金二次枝晶间距影响较大。
The effect of synergistic action between ultrasonic power and solidification pressure on the secondary dendrite arm spacing of vacuum counter-pressure casting ZL114 A aluminum alloy was studied through testing and analyzing the secondary dendrite arm spacing subjected to different ultrasonic power and solidification pressure.Meanwhile,the relationship of the secondary dendrite arm spacing of vacuum counter-pressure casting ZL114 A aluminum alloy with ultrasonic power and solidification pressure was established.The results indicate that ultrasonic effect and extrusion and infiltration effect of solidification pressure affect the secondary dendrite arm spacing of vacuum counter-pressure casting aluminum alloy under synergistic action between ultrasonic power and solidification pressure,and the secondary dendrite arm spacing of aluminum alloy is the smallest under synergistic action of 600 W ultrasonic power and 350 kPa solidification pressure.When the solidification pressure is less than 300 kPa,the effect of ultrasonic power on secondary dendrite arm spacing is obvious,but when the solidification pressure is more than 300 kPa,the effect of solidification pressure on secondary dendrite arm spacing is greater.
The effect of synergistic action between ultrasonic power and solidification pressure on the secondary dendrite arm spacing of vacuum counter-pressure casting ZL114 A aluminum alloy was studied through testing and analyzing the secondary dendrite arm spacing subjected to different ultrasonic power and solidification pressure.Meanwhile,the relationship of the secondary dendrite arm spacing of vacuum counter-pressure casting ZL114 A aluminum alloy with ultrasonic power and solidification pressure was established.The results indicate that ultrasonic effect and extrusion and infiltration effect of solidification pressure affect the secondary dendrite arm spacing of vacuum counter-pressure casting aluminum alloy under synergistic action between ultrasonic power and solidification pressure,and the secondary dendrite arm spacing of aluminum alloy is the smallest under synergistic action of 600 W ultrasonic power and 350 kPa solidification pressure.When the solidification pressure is less than 300 kPa,the effect of ultrasonic power on secondary dendrite arm spacing is obvious,but when the solidification pressure is more than 300 kPa,the effect of solidification pressure on secondary dendrite arm spacing is greater.
引文
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[17]HUANG Hai-jun,XU Yi-fan,SHU Da,HAN Yan-feng,WANG Jun,SUN Bao-de.Effect of ultrasonic melt treatment on structure refinement of solidified high purity aluminum[J].Transactions of Nonferrous Metals Society of China,2014,24(7):2414-2419.
[18]何迁.功率超声对铝及铝合金凝固过程的影响[D].北京:清华大学,2008.HE Qian.Effect of power ultrasonic treatment on solidification process of pure aluminum and aluminum alloy[D].Beijing:Tsinghua University,2008.
[19]严青松,余欢,芦刚,熊博文,卢百平.结晶压力对真空差压铸造铝合金二次枝晶间距的影响[J].中国有色金属学报,2014,24(5):1194-1199.YAN Qing-song,YU Huan,LU Gang,XIONG Bo-wen,LU Bai-ping,ZOU Xun.Effect of crystallization pressure on secondary dendrite arm spacing of vacuum counter-pressure casting aluminum alloy[J].The Chinese Journal of Nonferrous Metals,2014,24(5):1194-1199.
[20]KOVACHEVA R,BACHVAROV G,DAFINOVA R.Influence of the counter pressure casting conditions on the microstructural characteristics of Al Si7Mg castings[J].Journal of Materials Science and Technology,1996,12(1):42-56.
[2]BAREKAR N S,DAS S,YANG X,HUANG Y,EL FAKIR O,BHAGURKAR A G,ZHOU L,FAN Z.The impact of melt conditioning on microstructure,texture and ductility of twin roll cast aluminium alloy strips[J].Materials Science and Engineering A,2016,650(5):365-373.
[3]SHIN J S,KO S H,KIM K T.Development and characterization of low-silicon cast aluminum alloys for thermal dissipation[J].Journal of Alloys and Compounds,2015,644(25):673-686.
[4]RAMIREZ A,QIAN M,DAVIS B.Potency of high-intensity ultrasonic treatment for grain refinement of magnesium alloys[J].Scripta Materialia,2008,59:19-22.
[5]ESKIN C I.Broad prospects for commercial application of the ultrasonic(cavitation)melt treatment of light alloys[J].Ultrasonics Sonochemistry,2001,8(3):319-325.
[6]ESKIN C I.Improvement of the structure and properties of ingots and worked aluminum alloy semifinished products by melt ultrasonic treatment in a cavitation regime[J].Metallurgist,2010,54(7):505-513.
[7]ATAMANENKO T V,ESKIN D G,ZHANG L,KATGERMAN L.Criteria of grain refinement induced by ultrasonic melt treatment of aluminum alloys containing Zr and Ti[J].Metallurgical and Materials Transactions A,2010,41(8):2056-2066.
[8]ZHANG L,ESKIN D G,KATGERMAN L.Influence of ultrasonic melt treatment on the formation of primary intermetallics and related grain refinement in aluminum alloys[J].Journal of Materials Science,2011,46(15):5252-5259.
[9]李英龙,李宝绵,刘永涛,高彩茹,戴恩泰.功率超声对Al-Si合金组织和性能的影响[J].中国有色金属学报,1999,9(4):719-722.LI Ying-long,LI Bao-mian,LIU Yong-tao,GAO Cai-ru,DAI En-tai.Effect of high-intensity ultrasounic on structures and properties of Al-Si alloys[J].The Chinese Journal of Nonferrous Metals,1999,9(4):719-722.
[10]李成,严青松,芦刚,沈加利.超声功率对金属型铸造铝合金二次枝晶间距的影响[J].特种铸造及有色合金,2015,35(1):103-105.LI Cheng,YAN Qing-song,LU Gang,SHEN Jia-li.Effect of power ultrasonic on secondary dendrite arm spacing in metal permanent mould casting aluminum alloy[J].Special Casting&Nonferrous Alloys,2015,35(1):103-105.
[11]JIANG R P,LI X Q,ZHANG M.Investigation on the mechanism of grain refinement in aluminum alloy solidified under ultrasonic vibration[J].Metals and Materials International,2015,21(1):104-108.
[12]严青松,余欢,魏伯康,徐志峰,蔡长春.真空差压铸造工艺的凝固补缩特性与模型[J].中国有色金属学报,2008,18(6):1051-1057.YAN Qing-song,YU Huan,WEI Bo-kang,XU Zhi-feng,CAI Chang-chun.Solidification feeding behavior and model of vacuum counter-pressure casting technology[J].The Chinese Journal of Nonferrous Metals,2008,18(6):1051-1057.
[13]YAN Qing-song,YU Huan,XU Zhi-feng,XIONG Bo-wen,CAI Chang-chun.Effect of holding pressure on the microstructure of vacuum counter-pressure casting aluminum alloy[J].Journal of Alloys and Compounds,2010,501:352-357.
[14]丁莹莹.铝合金凝固组织的超声细化机制研究[D].大连:大连理工大学,2010.DING Ying-ying.Study on refinement mechanisms of aluminum alloy solidification treated by high intensity ultrasonic[D].Dalian:Dalian University of Technology,2010.
[15]ESKIN G I,MAKAROV G S.Effect of cavitation melt treatment on the structure refinement and property improvement in cast and deformed hypereutectic Al-Si alloys[J].Materials Science Forum.1997,242:65-70.
[16]李开晔.直入式超声波施振铸造试验及其凝固动力学机理研究[D].长沙:中南大学,2010.LI Kai-ye.Study on Straight type ultrasonic vibration test and its solidification kinetics mechanism[D].Changsha:Central South University,2010.
[17]HUANG Hai-jun,XU Yi-fan,SHU Da,HAN Yan-feng,WANG Jun,SUN Bao-de.Effect of ultrasonic melt treatment on structure refinement of solidified high purity aluminum[J].Transactions of Nonferrous Metals Society of China,2014,24(7):2414-2419.
[18]何迁.功率超声对铝及铝合金凝固过程的影响[D].北京:清华大学,2008.HE Qian.Effect of power ultrasonic treatment on solidification process of pure aluminum and aluminum alloy[D].Beijing:Tsinghua University,2008.
[19]严青松,余欢,芦刚,熊博文,卢百平.结晶压力对真空差压铸造铝合金二次枝晶间距的影响[J].中国有色金属学报,2014,24(5):1194-1199.YAN Qing-song,YU Huan,LU Gang,XIONG Bo-wen,LU Bai-ping,ZOU Xun.Effect of crystallization pressure on secondary dendrite arm spacing of vacuum counter-pressure casting aluminum alloy[J].The Chinese Journal of Nonferrous Metals,2014,24(5):1194-1199.
[20]KOVACHEVA R,BACHVAROV G,DAFINOVA R.Influence of the counter pressure casting conditions on the microstructural characteristics of Al Si7Mg castings[J].Journal of Materials Science and Technology,1996,12(1):42-56.