中國有色金屬學(xué)報(英文版)
Transactions of Nonferrous Metals Society of China
| Vol. 10 No. 6 December 2000 |
various SiC particle sizes at room temperature①
（1. Key Laboratory of Education Ministry for High Temperature Materials and Tests,
Shanghai Jiaotong University, Shanghai 200030, P.R.China;
2. Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology,
371-3, Kusong-dong, Yusong-gu, Taejon, 305-701, Korea）
Abstract:The tensile properties of 2124Al alloy composites reinforced with various sizes of SiC particles were investigated at room temperature. The size of SiCpwas changed from 0.2μm to 48.0μm with an identical volume fraction of 20%. The results show that the relative density of the composite decreased with increase of the SiCpsize from 3.0μm to 48.0μm, whereas 0.2μm SiCpreinforced composite has the lowest relative density. The pore density, interparticle spacing, SiC particle cracking, SiCp/Al interfacial debonding, the distribution of SiC particles, in the composites are considered as factors to determine the failure behavior of the composites.
Key words: metal matrix composite; Al alloy; SiC particle; mechanical properties
