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材料研究学报  2009, Vol. 23 Issue (2): 211-214    
  研究论文 本期目录 | 过刊浏览 |
碳化硅增强铝基复合材料的力学性能和断裂机制
金鹏1;  刘越1;2; 李曙1; 肖伯律1
1.中国科学院金属研究所 沈阳 110016
2.东北大学材料与冶金学院 沈阳 110004
Effects of SiC particle size on tensile property and fracture behavior on particle reinforced aluminum metal matrix composites
JIN Peng1;  LIU Yue1;2;  LI Shu1; XIAO Bolv1
1.Institute of Metal Research; The Chinese Academy of Sciences; Shenyang 110016
2.School of Material and Metallurgy; Northeastern University; Shenyang 110004
引用本文:

金鹏 刘越 李曙 肖伯律. 碳化硅增强铝基复合材料的力学性能和断裂机制[J]. 材料研究学报, 2009, 23(2): 211-214.
, , . Effects of SiC particle size on tensile property and fracture behavior on particle reinforced aluminum metal matrix composites[J]. Chin J Mater Res, 2009, 23(2): 211-214.

全文: PDF(760 KB)  
摘要: 

研究了碳化硅颗粒(SiCp)尺寸对用粉末冶金法制备体积分数为15%的SiCp/2009铝基复合材料力学性能和断裂机制的影响. 结果表明, 复合材料的强度随着SiCp尺寸的增大而减小, 塑性则随着颗粒的增大而增大. 当SiCp尺寸为1.5μm时, SiCp/2009Al复合材料的断裂主要以界面处撕裂和基体材料的开裂为主; 当SiCp尺寸为20 μm时, 复合材料的断裂主要以SiCp断裂为主; 当SiCp尺寸处于两者之间时, SiCp/2009Al复合材料界面处撕裂和SiCp断裂的共同作用决定复合材料的断裂.

关键词 复合材料铝基复合材料颗粒尺寸粉末冶金法力学性能断裂机制    
Abstract

In this paper the tensile properties and fracture behaviour of aluminum alloy 2009 reinforced with silicon carbide particulates (SiCp) fabricated via elemental powder metallurgical technique were presented. The results indicate that the strength of 15%SiC/2009Al composite decrease with increasing particulates size, but ductility inversely. When particulates were 1.5μm, the breakage is due to tearing of matrix near interface. The failure of composites with 20μm particulate results from crack of SiCp. When particulates are between above sizes, the failure of composite results from tearing of matrix near interface and crack of SiCp.

Key wordscomposites    aluminum matrix composites    particle size    powder metallurgical    mechanical property    fracture mechanism
收稿日期: 2008-11-20     
ZTFLH: 

TB331

 

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