異なる応力三軸度によるアルミニウム基SiC粒子強化複合材料の微視的な損傷形態

概要

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The tensile test of three type of SiC particle reinforced 2024-T6 Aluminum alloy are conducted by changing the reinforcement volume as 0%, 2% and 10%. The stress-triaxiality of the specimens are changed 0.33, 0.56, 0.75, 1.0, 1.46, 1.94 and 2.5 by changing the notch radius of the specimens. The effect of stress-triaxiality on void configuration is investigated under the SEM (Scanning Electron Microscope) and 3-dimensional imaging analysis. The experimental results show that the void diameter and depth changed with the change of SiC particle volume fraction and stress triaxiality in the base matrix. The number of small void increases and the number of large voids decreases with the decrease of the stress triaxiality and SiC particle volume fraction. The number of small voids decreases and the number of large voids increases with the increase of the stress triaxiality and SiC particle volume fraction. The aspect ratio of the voids increases with the increase of the void diameters.
一般社団法人日本機械学会の論文
2000-08-25