Effects of Dynamic Recrystallization in Extruded and Compressed AZ31 Magnesium Alloy

doi:10.11890/1006-7191-105-334

Acta Metallurgica Sinica (English Letters) ›› 2010, Vol. 23 ›› Issue (5): 334-342.DOI: 10.11890/1006-7191-105-334

Effects of Dynamic Recrystallization in Extruded and Compressed AZ31 Magnesium Alloy

范晓慧¹,Weiqin Tang²,Shaorui Zhang²,Dayong Li²,Yinghong Peng²

1. 上海交通大学机械与动力工程学院
2.

收稿日期:2010-04-12 修回日期:2010-08-02 出版日期:2010-10-25 发布日期:2010-10-14
通讯作者: 范晓慧

Effects of dynamic recrystallization in extruded and compressed AZ31 magnesium alloy

Xiaohui FAN, Weiqin TANG,Shaorui ZHANG, Dayong LI, Yinghong PENG

School of Mechanical Engineering,Shanghai Jiao Tong University, Shanghai 200240, China

Received:2010-04-12 Revised:2010-08-02 Online:2010-10-25 Published:2010-10-14
Contact: Xiaohui FAN

摘要/Abstract

关键词: AZ31, extrusion, dynamic recrystallization, microstructure, stress-strain, texture

Abstract: Commercial AZ31 billets were extruded to round rods at three extrusion velocities of 0.8~m/min, 1.4 m/min and 2.2 m/min, at 643 K, 673 K and 703 K, respectively. The microstructure and texture evolution at different conditions were investigated by optical microscopy (OM) and electron backscattered diffraction (EBSD) techniques. The average grain size is reduced significantly after the hot extrusion, and the microstructure is obviously inhomogeneous due to dynamic recrystallization, which is confirmed by uni-axial compression experiments at elevated temperatures with different strain rates. The uni-axial compression leads to a fibre texture, and {1120}<0110> texture is the major texture in extruded rods due to non-basal slip. As the extrusion temperature is elevated, the main texture becomes weak and other texture components appear.

Key words: AZ31, Extrusion, Dynamic recrystallization, Microstructure, Stress-strain, Texture

范晓慧 Weiqin Tang Shaorui Zhang Dayong Li Yinghong Peng. Effects of Dynamic Recrystallization in Extruded and Compressed AZ31 Magnesium Alloy[J]. Acta Metallurgica Sinica (English Letters), 2010, 23(5): 334-342.

Xiaohui FAN, Weiqin TANG,Shaorui ZHANG, Dayong LI, Yinghong PENG. Effects of dynamic recrystallization in extruded and compressed AZ31 magnesium alloy[J]. Acta Metallurgica Sinica (English Letters), 2010, 23(5): 334-342.

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Effects of Dynamic Recrystallization in Extruded and Compressed AZ31 Magnesium Alloy

Effects of dynamic recrystallization in extruded and compressed AZ31 magnesium alloy

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