Studies on microyield behavior of a SiC_p/2024Al composite

摘要

Microyield behavior of a silicon carbide particles reinforced 2024 aluminum alloy (SiC_p/ 2024Al composite) was investigated. The results showed that the composites exhibited some types of notable strain relaxation before microyielding when subjected to an applied stress far lower then conventional yield stress. The microyield mechanism was not conformed to the classical linear relation between the applied stress (σ) and square root of plastic strain (ε~1/2_p), proposed by Brown N and Lukens K F. Microyield strength could be strongly affected by heat treatment routes.