AGING BEHAVIOUR OF PARTICULATE REINFORCED ALUMINUM ALLOY MATRIX COMPOSITES

来源期刊：中国有色金属学报(英文版)1993年第3期

论文作者：Li Yichun Shao Wenzhu An Xiyun

文章页码：66 - 70

Key words：particle ;composite ;aging ;precipitation phase

Abstract: The process of aging precipitation in SiC_p/6061 and Al₂O₃/6061 composites were investigated. Hardness testing, differential scanning calorimetry(DSC) and transmission electron microscopy were employed. Results showed that the precipitation phase form directly along dislocation lines in the composites because the particles produce high densities of dislocations which makes vacancy densities in the composites decrease, and the main precipitation phase at peak hardness was β′ phase.