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显微结构对铝基陶瓷复合材料断裂的影响(PDF)

《南京林业大学学报(自然科学版)》[ISSN:1000-2006/CN:32-1161/S]

Issue:
1996年01期
Page:
58-62
Column:
研究论文
publishdate:
1900-01-01

Article Info:/Info

Title:
MICROSTRUCTURAL EFFECTS ON THE FRACTURE IN THE ALUMINIUM MATRIX CERAMIC COMPOSITES
Article ID:
1000-2006(1996)01-0058-05
Author(s):
Wei Jiamei
College of Mechanical Engineering Nanjing Forestry University Nanjing 210037
Keywords:
Composites Microstructure Fracture toughness
Classification number :
-
DOI:
10.3969/j.jssn.1000-2006.1996.01.014
Document Code:
A
Abstract:
This paper deals with the microstructure-property relationship in metal-ceramic particulate reinforced composites. Metal matrix was 7075 aluminum alloy and was reinforced with 20% by volume of either F-600 grade or F-1000 grade SiC particulates. Through tensile ductility and fracture toughness, and by means of frac-tography of TEM and SEM, the details of the fracture were investigated. The result showed that fracture tended to initiate in clustered regions. A tendency to shift the fracture mode from particle cracking to dimpled fracture was observed as the matrix temper was varied from underaged to overaged. While TEM revealed a new phase of precipitation at the particle/matrix interface in the overaged and it accompanied a substantial decrease in toughness.

References

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Last Update: 1900-01-01