AZ31B镁合金轧板差温剪切旋压成形组织和性能的研究
Research on Microstructure and Mechanical Properties of AZ31B Magnesium Alloy Formed by Differential Temperature Shear Spinning
秦林新 1杨文华 2郝爱国 2崔旭昌 2王锋华 3董杰3
作者信息
- 1. 中国工程物理研究院 机械制造工艺研究所, 四川 绵阳 621900;上海交通大学 轻合金精密成型国家工程研究中心, 上海 200240
- 2. 中国工程物理研究院 机械制造工艺研究所, 四川 绵阳 621900
- 3. 上海交通大学 轻合金精密成型国家工程研究中心, 上海 200240
- 折叠
摘要
在 100～300℃成形温度开展了AZ31B镁合金薄板差温剪切旋压实验,并分析研究了温度对成形工件微观组织和力学性能的影响规律.结果表明:AZ31B板材在 150～300℃具有良好的差温剪切旋压成形性;150℃成形时,工件微观组织中以变形孪晶为主,晶界分布着亚微米级再结晶晶粒,随着温度上升,再结晶体积分数增加,在 250、300℃成形时,获得完全动态再结晶组织.工件在 200℃成形后获得最佳综合力学性能,在 150℃旋压后工件强度最高.
Abstract
The differential temperature shear spinning experiment of AZ31B magnesium alloy sheet was carried out at the forming temperature of 100-300℃,and the effect of temperature on the microstructure and mechanical properties of the formed workpiece was analyzed and studied.The results show that AZ31B sheet has good differential temperature shear spinning formability at 150-300℃;when it is deformed at 150℃,deformation twins are dominant in the microstructure of the workpiece,and submicron recrystallized grains are distributed at the grain boundaries.With the increase of temperature,the volume fraction of recrystallization increases.When it is formed at 250 and 300℃,a fully dynamic recrystallization structure is obtained.The workpiece formed at 200℃obtains the best comprehensive mechanical properties,and the workpiece spinned at 150℃has the highest strength.
关键词
AZ31B镁合金/差温剪切旋压/组织性能Key words
AZ31B magnesium alloy/differential temperature shear spinning/microstructure and mechanical properties引用本文复制引用
出版年
2024
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NSTL
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