Title: HOT COMPRESSIVE DEFORMATION SIMULATION OF Mg-5.6Zn-0.7Zr-0.8Nd ALLOY AT ELEVATED TEMPERATURES
Abstract:The plastic deformation simulation of Mg-5.6Zn-0.7Zr-0.8Nd alloy at elevated temperature was performed on Gleebe-1500 hot simulator with the strain rates 0.1, 0.01 and 0.002 s-1 over a temperature ran...The plastic deformation simulation of Mg-5.6Zn-0.7Zr-0.8Nd alloy at elevated temperature was performed on Gleebe-1500 hot simulator with the strain rates 0.1, 0.01 and 0.002 s-1 over a temperature range from 373 to 673 K and the maximum deformation degree 60%. The relationships between flow stress and deformation temperature as well as strain rate were analyzed and the deformation activation energy and stress exponent were calculated. The variations of microstructure during the hot deformation process were observed. The results show that there are three types of flow stress at different temperatures. Working harden, recovery and recrystallization operate under different temperatures and strain rates. The deformation activation energy increases with increasing strain rate. The alloy dynamic recrystallizes during deforming over 473 K, and the recrystallized grain size is only 5-10μm, which improves the ductility of alloyRead More
Publication Year: 2003
Publication Date: 2003-01-01
Language: en
Type: article
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Cited By Count: 1
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