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Continuous dynamic recrystallization and discontinuous dynamic recrystallization in 99.99% polycrystalline aluminum during hot compression 预览 被引量:1
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作者 刘楚明 蒋树农 张新明 《中国有色金属学会会刊:英文版》 2005年第1期 82-86,共5页
The dynamic restoration behavior of 99.99% polycrystalline aluminum was investigated.The deformation was carried out by compression test at 533-773 K and initial strain rate of 0.002-2 s 1 to a true strain of 1.0follo... The dynamic restoration behavior of 99.99% polycrystalline aluminum was investigated.The deformation was carried out by compression test at 533-773 K and initial strain rate of 0.002-2 s 1 to a true strain of 1.0followed by water quench.Polarized optical microscopy and transmission electron microscopy were applied to observe the deformation microstructure.It's found that discontinuous dynamic recrystallization,which is commonly observed in lower stacking fault energy metals or ultra-high purity aluminum(≥99.999%),occurs when ZennerHollomon parameter(Z parameter) is low,but the true stress-strain curve doesn't accompany stress oscillation.Continuous dynamic recrystallization occurs when Z parameter is intermediate,and only dynamic recovery takes place if Z parameter is high. 展开更多
关键词 连续力学再结晶 多晶铝 力学恢复性 Zenner-Hollomon参数
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