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Microstructure and Texture Evolution of Mg–Gd–Y–Zn–Zr Alloy by Compression–Torsion Deformation

机译:Mg-Gd-Y-Zn-Zr合金的压缩-扭转变形组织和织构演变

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摘要

Mg–13Gd–4Y–2Zn–0.5Zr alloy was subjected to compression–torsion deformation at 450 °C with a strain rate of 0.001–0.5 s−1 using a Gleeble 3500 torsion unit. The effects of compression–torsion deformation on the microstructure and texture were studied, and the results showed that with the decrease of strain rate, the texture strength decreased, the number of dynamic precipitated particles increased, the degree of recrystallization increased, and the dynamic recrystallization mechanism changed from a continuous dynamic recrystallization mechanism to a continuous and discontinuous dynamic recrystallization mechanism. Along the direction of increasing radius, the degree of dynamic recrystallized grain (DRX) increased, the number of dynamic precipitated particles increased, and the texture strength slightly increased.
机译:使用Gleeble 3500扭力单元,Mg-13Gd-4Y-2Zn-0.5Zr合金在450°C下以0.001-0.5 s -1 的应变速率经受压缩-扭转变形。研究了压扭变形对组织和织构的影响,结果表明,随着应变速率的降低,织构强度降低,动态沉淀颗粒数量增加,重结晶度增加,动态重结晶机理从连续动态再结晶机制转变为连续和不连续动态再结晶机制。沿半径增加的方向,动态重结晶晶粒(DRX)的程度增加,动态沉淀颗粒的数量增加,并且织构强度略有增加。

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