In situ observation of partial melting in superplastic aluminum alloy composites at high temperatures
作者： J. Koike , M. Mabuchi , K. Higashi
DOI: 10.1016/0956-7151(95)90275-9
关键词: Composite material 、 Microstructure 、 Differential scanning calorimetry 、 Partial melting 、 Calorimetry 、 Transmission electron microscopy 、 Grain boundary 、 Alloy 、 Superplasticity 、 Materials science 、 General Engineering
摘要: Abstract The possibility of partial melting and its relations to the superplasticity at high strain rates were studied with transmission electron microscopy differential scanning calorimetry in AlCuMg (2124), AlMg (5052), AlMgSi (6061) alloys reinforced Si 3 N 4 particles. Calorimetry measurements all three composites showed a sharp endothermic peak an optimum superplastic temperature. At same temperature, grain boundaries interfaces, suggesting direct correlations between superplasticity. Solute segregation was also observed discussed as causes for melting.
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