Structure and Mechanical Properties of Al-based Gradient Composites Reinforced with Primary Si and Mg2Si Particles through Centrifugal Casting

被引：0

作者：

翟彦博 ^{[1
]}

MA Xiuteng ^{[1
]}

MEI Zhen ^{[2
]}

机构：

[1] College of Engineering and Technology, Southwest University

[2] Congqing Machine Tool (Group) Co.,Ltd.

来源：

Journal of Wuhan University of Technology(Materials Science) | 2013年 / 28卷 / 04期

基金：

中国国家自然科学基金; 中央高校基本科研业务费专项资金资助;

关键词：

gradient composites; centrifugal casting; primary Si; primary Mg2Si;

D O I：

暂无

中图分类号：

TB33 [复合材料]; TG249.4 [离心铸造];

学科分类号：

080201 ; 0805 ; 080502 ; 080503 ;

摘要：

The structure and mechanical properties of a new type of Al-based discontinuous gradient composites prepared by using the ternary Al-19Si-5Mg alloys as the raw material adopting the centrifugal casting method were investigated. Structurally, the composites are divided into two zones: a reinforced zone with the high volume fraction of primary Si and Mg2Si particles and an unreinforced zone with no or a few particles. In the reinforced zone, the primary particles are evenly distributed, with the sizes of the primary Si particles 80-120 μm, and that of primary Mg2Si particles 20-50 μm. The properties test results show the reinforced zone has higher Rockwell hardness and better wear resistance than the unreinforced zone, due to the complementary reinforcement relationship between the primary Si and Mg2Si particles and their high volume fraction.

引用

页码：813 / 818

页数：6

共 19 条

[1] Microstructure and Mechanical Properties of an in situ Synthesized TiB and TiC Reinforced Titanium Matrix Composite Coating[J]. 李军.Journal of Wuhan University of Technology（Materials Science Edition）. 2012(01)
[2] Microstructure of Ni/WC Surface Composite Layer on Gray Iron Substrate
Yang Guirong
Song Wenming
Ma Ying
Lu Jinjun
Hao Yuan
Li Yuandong
Wang Haitang
[J]. JOURNAL OF WUHAN UNIVERSITY OF TECHNOLOGY-MATERIALS SCIENCE EDITION, 2011, 26 (05): : 861 - 866
[3] New Mg2Si based Alloy for Automobile Engine Cylinder Liner[J]. 张道文.Journal of Wuhan University of Technology（Materials Science Edition）. 2011(04)
[4] Effect of Lanthanum-praseodymium-cerium Mischmetal on Mechanical Properties and Microstructure of Mg-A1 Alloys
易勇
[J]. Journal of Wuhan University of Technology(Materials Science), 2011, (01) : 102 - 104
[5] Preparation and properties of Si p /Al composites by spark plasma sintering[J] . J.H. Yu,C.B. Wang,Q. Shen,L.M. Zhang.Materials and Design . 2012
[6] Microstructural evolution and tensile properties of the in situ Al–15%Mg 2 Si composite with extra Si contents[J] . N. Nasiri,M. Emamy,A. Malekan.Materials and Design . 2011
[7] Enhanced ductility in an Al–Mg2Si in situ composite processed by ECAP using a modified B C route[J] . Liping Bian,Wei Liang,Guoyin Xie,Wenli Zhang,Jinbo Xue.Materials Science ＆ Engineering A . 2011 (9)
[8] Mechanical and wear behaviors of Al–12Si– X Mg composites reinforced with in situ Mg 2 Si particles[J] . Yavuz Sun,Hayrettin Ahlatci.Materials and Design . 2011 (5)
[9] Thermodynamic evaluation of hypereutectic Al–Si （A390） alloy with addition of Mg[J] . Alireza Hekmat-Ardakan,Frank Ajersch.Acta Materialia . 2010 (9)
[10] Characteristics of two Al based functionally gradient composites reinforced by primary Si particles and Si/in situ Mg 2 Si particles in centrifugal casting[J] . Yan-bo ZHAI,Chang-ming LIU,Kai WANG,Mao-hua ZOU,Yong XIE.Transactions of Nonferrous Metals Society of China . 2010 (3)

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