HIGH STRAIN RATE SUPERPLASTICITY IN A SiC_w/2024Al COMPOSITE MADE BY SQUEEZE CASTING |
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| Authors: | XJXu D Zhang ZL Shi CZZhao and RJ Wu |
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| Affiliation: | X.J.Xu,D. Zhang,Z.L. Shi,C.Z.Zhao and R.J. Wu (State Key Laboratory of Metal Matrir Composites,Shanghai Jiaotong University,Shanghai,China) |
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| Abstract: | In this paper,the superplastic characteristics of the beta-SiC whisker reinforced 2024aluminum composite, fabricated by squeeze casting and hot-rolling after extrusion were investigated. The compsite had a fine grain size of about 2μm, and exhibited a strain rate sensitivity of about 0.35 and a maximum elongation of 350% at an initial strain rate of 1.1×10-1s-1 at 803K. In addition, the superplastic deformation mechanisme of the composite were also examined. |
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| Keywords: | high strain rate superplasticity aluminum matrix composite squeeze casting |
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