王爱琴,谢敬佩,刘忠侠,李继文,王文焱

• 1:郑州大学教育部材料物理重点实验室
• 2:河南科技大学材料学院
• 3:郑州大学教育部材料物理重点实验室
• 4:河南科技大学材料学院

摘要(Abstract)：

利用单辊旋淬法制备快速凝固共晶和过共晶铝硅合金条带,采用扫描电镜、透射电镜及XRD技术对试样的组织形貌、相结构进行表征。结果表明:快速凝固后组织明显细化,共晶和过共晶组织转变成了亚共晶组织;与平衡态相比,快速凝固有效抑制硅相的形核与生长,初生硅不能析出,α相领先共晶形核生长,形成α相和分布在α相间的羽毛针列状共晶体复合组织。

关键词(KeyWords)： 快速凝固;微观组织;微纳米晶;羽毛针列状共晶体

Abstract:

Keywords:

基金项目(Foundation): 河南省创新人才基金(06210006000);; 河南科技大学科研基金(2006zy053)

作者(Author): 王爱琴,谢敬佩,刘忠侠,李继文,王文焱

参考文献(References)：

• [1]李双明,马伯乐,李晓历,等.定向凝固相共晶合金中相的竞争生长[J].中国科学E辑,2005,35(5):479-489.LI Shuang-ming,MA Bo-le,LI Xiao-li,et al.Phases competitive growth of eutectic alloys during directional solidification[J].Science in China E(inchinese),2005,35(5):479-489.
• [2]Kapranos P,Kirkwood D H,Atkinson H V,et al.Thixoforming of an automotive part in A390 hypereutectic Al-Si alloy[J].Journal of Materials ProcessingTechnology,2003,135(5):271-277.
• [3]陈光,傅恒志,等.非平衡凝固新型金属材料[M].北京:科学出版社,2004.
• [4]ZHANG Zhong-hua,BIAN Xiu-fang,WANG Zhen-qing,et al.Microstructure and grain refinement performance of rapidly solidified Al-Ti-C master alloys[J].Journal of Alloys and Compounds,2002,339:180-188.
• [5]Nikanorov S P,Volkov M P,Gurina V N.Structural and mechanical properties of Al-Si alloys obtained by fast cooling of a levitated melt[J].MaterialsScience and Engineering A,2005,390:63-69.
• [6]Noue A I.Bulk Amorphous alloys-preparation and characteristics[J].Materials Science Foundations,1998,4:1-2.
• [7]Lim S C,Gupta M,Leng Y F,et al.Wear of a spray-deposited hypereutectic aluminium-silicon alloy[J].Journal of Materials Processing Technology,1997,63:865-870.
• [8]Zhen L,Kang S B.DSC analyses of the precipitation behavior of two Al-Mg-Si alloys naturally aged for different times[J].Materials Letters,1998,37:349-353.
• [9]Szuece F,Kim C P,Johnson W F.Mechanical properties of Zr56.2Ti13.8Nb5Cu6.9Ni5.6Be12.5ductile reinforced bulk metallic glass composite[J].Acta Mater,2001,49:1507-1513.
• [10]胡赓祥,钱苗根.金属学[M].上海:上海交通大学出版社,1982.

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