拉伸孪晶对AZ31镁合金薄板可轧性和组织性能的影响
Effect of Tensile Twinning on Rollability and Microstructure and Properties of AZ31 Magnesium Alloy Sheet
刘群峰 1聂慧慧 2任健斌 1杨汉章 1王文嘉 1梁伟1
作者信息
- 1. 太原理工大学 材料科学与工程学院,山西 太原 030024;太原理工大学 先进镁基材料山西重点实验室,山西太原 030024
- 2. 太原理工大学 先进镁基材料山西重点实验室,山西太原 030024;太原理工大学 机械与运载工程学院,山西 太原 030024
- 折叠
摘要
通过弯曲限宽矫直工艺在AZ31 镁合金薄板中预置了拉伸孪晶,随后对原始板材和预置孪晶板材进行轧制,对比分析了初始组织对板材在轧制过程中的塑性变形协调能力的影响,探索了不同轧制压下量对两种板材的组织和力学性能的影响.结果表明:弯曲限宽矫直后板材的强度和塑性都得到了提升,轧制后的原始板材剪切变形带较少.在后续的拉伸试验中,在相同压下量下塑性变形能力也明显提升.
Abstract
Tensile twins were pre-set in the AZ31 magnesium alloy sheet by bending limited width straightening process,and then the original and pre-twinned sheets were subjected to rolling to compare and analyze the effect of the initial microstructure on the plasticity of the sheet during rolling.The effect of different rolling reductions on the microstructure and mechanical properties of the two sheets was explored.The results show that the strength and plasticity of the sheet after bending and straightening have been improved,the original sheet after rolling has less shear deformation bands,and the plastic deformation capacity is also significantly improved under the same reduction in the subsequent tensile test.
关键词
AZ31镁合金/弯曲限宽矫直(BLWS)/轧制Key words
AZ31 magnesium alloy/bending limited width straightening(BLWS)/rolling引用本文复制引用
基金项目
国家自然科学基金资助项目(U1810208)
出版年
2024
NETL
NSTL
万方数据