秦晓雄,程和法,卢楠方,程峰

• 1:合肥工业大学材料科学与工程学院

摘要(Abstract)：

用熔铸法制备Al-50Si复合材料,加入Al-3P中间合金对熔体进行变质处理,研究P元素对Al-50Si复合材料微观组织和性能的影响,并且采用晶粒统计、X射线衍射仪、扫描电镜和能谱仪等仪器和方法研究P元素对Al-50Si复合材料中初晶硅的变质机理。结果表明:一定的P含量对Al-50Si复合材料中的初晶硅和共晶硅的凝固形态均有显著的变质作用, P的加入量为0.5%时,变质效果最佳,初晶硅的平均尺寸减小到40μm,形貌由粗大的板条状转变为细小均匀的多角块状,共晶硅由粗大的针状变为短杆状;P对初晶硅的作用机理是在熔体中形成了大量的AlP粒子,作为初晶硅的异质晶核极大地提高了初晶硅的形核率,使其细化并均匀分布;P变质使Al-50Si复合材料的抗弯强度得到显著提高,达到206.27 MPa,同时,Al-50Si复合材料的导热性能也大幅上升,热导率达到131.25 W/(m·K),热膨胀系数没有发生明显改变。

关键词(KeyWords)： Al-50Si复合材料;P变质;初晶硅;抗弯强度;物理性能

Abstract:

Keywords:

基金项目(Foundation): 安徽省科技攻关重大项目(1301021006)

作者(Author): 秦晓雄,程和法,卢楠方,程峰

DOI: 10.13289/j.issn.1009-6264.2018-0051

参考文献(References)：

• [1] 解立川,彭超群,王日初,等.高硅铝合金电子封装材料研究进展[J].中国有色金属学报,2012,22 (9):2578-2587.XIE Li-chuan,PENG Chao-qun,WANG Ri-chu,et al.Research progress of high aluminum-silicon alloys in electronic packaging[J].The Chinese Journal of Nonferrous Metals,2016,22 (9):2578-2587.
• [2] 杨伏良,甘卫平,陈招科,等.高硅铝合金几种常见制备方法及其细化机理[J].材料导报,2005,19(5):45-49.YANG Fu-liang,GAN Wei-ping,CHEN Zhao-ke,et al.A few preparation methods and their delication mechanism for high-silicon aluminum alloy[J].Materials Review,2005,19(5):45-49.
• [3] 陈寰贝,庞学满,胡进.航空航天用电子封装材料及其发展趋势[J].电子与封装,2014,14(5):6-9.CHEN Huan-bei,PANG Xue-man,HU Jin,et al.Electronic packaging materials for aerospace and its developing tendency[J].Electronics and Packaging,2014,2014,14(5):6-9.
• [4] Xu C L,Jiang Q C.Morphologies of primary silicon in hypereutectic Al-Si alloys with melt overheating temperature and cooling rate[J].Materials Science and Engineering A,2006,437(2):451-455.
• [5] Liang C,Chen Z H,Huang Z Y,et al.Optimizing microstructures and mechanical properties of hypereutectic Al-18%Si alloy via manipulating its parent liquid state[J].Materials Science and Engineering A,2017,690:387-392.
• [6] 魏丽晶,曹福洋.Al-50wt.%Si熔配工艺研究[D].哈尔滨:哈尔滨工业大学,2012.WEI Li-jing,CAO Fu-yang.Study on melting process of 50mass% Al-Si alloy[D].Harbin:Harbin Institute of Technology,2012.
• [7] 武宏发,程和法,秦晓雄,等.P、La变质处理对过共晶铝硅合金的影响[J].特种铸造及有色合金,2017,37(9):1037-1040.WU Hong-fa,CHENG He-fa,QIN Xiao-xiong,et al.Effects of P and La modifications in silicon phase in hyperutectical Al-Si alloy[J].Special Casting and Nonferrous Alloys,2017,37(9):1037-1040.
• [8] 张帆,周伟敏.材料性能学[M].上海:上海交通大学出版社,2007:249-250.
• [9] 张伟,杨伏良,甘卫平,等.电子封装用高硅铝合金热膨胀性能的研究[J].材料导报,2006,20(6):348-350.ZHANG Wei,YANG Fu-liang,GAN Wei-ping,et al.Study on thermal expansion property of high-silicon aluminum alloy for electronic packaging[J].Materials Review,2006,20(6):348-350.
• [10] 刘全坤,祖方遒,李萌盛.材料成形基本原理[M].北京:机械工业出版社,2010,57-58.
• [11] Cao F Y,Jia Y D,Konda Gokuldoss Prashanth,et al.Evolution of microstructure and mechanical properties of as-cast Al-50Si alloy due to heat treatment and P modifier content[J].Materials and Design,2015,74:150-156.
• [12] Dai H S,Liu X F.Refinement performance and mechanism of an Al-50Si alloy[J].Materials Characterization,2008,58(3):1559-1563.
• [13] Zuo M,Liu X F,Sun Q Q,et al.Effect of rapid solidification on the microstructure and refining performance of an Al-Si-P master alloy[J].Journal of Materials Processing Technology,2009,209:5504-5508.
• [14] Zuo M,Zhao D G,Teng X Y,et al.Effect of P and Sr complex modification on Si phase in hypereutectic Al-30Si alloys[J].Materials and Design,2013,47:857-864.
• [15] Qin J,Zuo M,Gu T,et al.The featured local structural units in liquid Al80Si15P5,alloy and their relationship with Si modification[J].Journal of Alloys and Compounds,2010,492(1):525-528.
• [16] 贾延东.Al-50wt.%Si合金硅相控制及性能研究[D].哈尔滨:哈尔滨工业大学,2015.JIA Yan-dong.Silicon phase control and property of the Al-50wt.%Si alloy[D].Harbin:Harbin Institute of Technology,2015.
• [17] Zhang Q,Liu X,Dai H.Re-formation of AlP compound in Al-Si melt [J].Journal of Alloys and Compounds,2009,480(2):376-381.
• [18] 戴尚洪.超高硅铝合金中硅相的细化与界面性质研究[D].济南:山东大学,2009.DAI Shang-hong.Study on the grain refinement of Si phase and the interfacial characteristics in Si-high Al alloys[D].Jinan:ShangDong University,2009.

文章评论(Comment)：