自然科学版 英文版
自然科学版 英文版
自然科学版 英文版

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中南大学学报(英文版)

Journal of Central South University

Vol. 13    No. 4    August 2006

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A mesomechanical ductility model of SiCp/Al composite
CHEN Kang-hua(陈康华), HUANG Da-wei(黄大为), SONG Min(宋 日文),
LI Xia(李 侠), FANG Ling(方 玲)

State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, China

Abstract:Based on tensile cracking of SiCp and decohesion of the interface between SiCp and Al matrix, a mesomechanical model for tensile deformation of SiCp/Al composites was developed. The microcracks and multi-scale second phase particles were assumed to distribute homogeneously. A nonlinear quantitative relationship between tensile ductility and volume fraction of SiCp was established based on the model. The tensile ductility values of 2xxx SiCp/Al and 6xxx SiCp/Al composites predicted by the model are in good agreement with the experimental values.The analysis of effects of multi-scale second phases on the ductility of the composites indicates that the ductility decreases with the increase of the volume fraction of SiCpand precipitates in Al matrix and is almost independent of constituents and dispersoids.

 

Key words: SiCp/Al; composite; mesomechanics; tensile ductility; model

中南大学学报(自然科学版)
  ISSN 1672-7207
CN 43-1426/N
ZDXZAC
中南大学学报(英文版)
  ISSN 2095-2899
CN 43-1516/TB
JCSTFT
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