Stored energy analysis of Zn-5Al eutectic alloy in superplastic deformation
来源期刊：Rare Metals2002年第3期
论文作者：SHI Zhiqiang, YE Yifu XI Xuekui and LI ShichurKey Laboratory of Liquid Structure and Heredity of Materials, Ministry of Education, Shandong University, Jinan , China College of Mechanical and Electrical Engineering, University of Petroleum, Dongying
文章页码：218 - 223
摘 要：<正>The stored energy and the energy release during SPD （superplastic deformation） of a Zn-5 Al alloy were studied. The alloy after rolling process gains more stored energy, and the as-rolled specimen can obtain maximum elongation and minimum flow stress without hot holding treatment before SPD. Experimental results show that stored energy release process is along with SPD process and is also an impetus to SPD. The as-rolled Zn-5Al alloy has 48 J/mol stored energy which was measured with DSC （differential scanning calorimeter） and conforms well to the calculated value. The as-rolled Zn-5Al alloy after SPD with an elongation of 2 500% releases 112 J/mol stored energy. Analysis shows that the strain rate is in direct ratio to the rate of stored energy release.
SHI Zhiqiang, YE Yifu XI Xuekui and LI ShichurKey Laboratory of Liquid Structure and Heredity of Materials, Ministry of Education, Shandong University, Jinan 250061, China College of Mechanical and Electrical Engineering, University of Petroleum, Dongying
摘 要：<正>The stored energy and the energy release during SPD （superplastic deformation） of a Zn-5 Al alloy were studied. The alloy after rolling process gains more stored energy, and the as-rolled specimen can obtain maximum elongation and minimum flow stress without hot holding treatment before SPD. Experimental results show that stored energy release process is along with SPD process and is also an impetus to SPD. The as-rolled Zn-5Al alloy has 48 J/mol stored energy which was measured with DSC （differential scanning calorimeter） and conforms well to the calculated value. The as-rolled Zn-5Al alloy after SPD with an elongation of 2 500% releases 112 J/mol stored energy. Analysis shows that the strain rate is in direct ratio to the rate of stored energy release.
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