Improving Strength and Formability of Rolled AZ31 Sheet by Two-Step Twinning Deformation
Improving Strength and Formability of Rolled AZ31 Sheet by Two-Step Twinning Deformation
复制标题
通过两步孪晶变形提高轧制 AZ31 板材的强度和成形性
DOI：
10.1007/s11837-019-03894-x
复制
发表时间：
2019
期刊：
影响因子：
2.6
通讯作者：
Pan Fusheng
中科院分区：
文献类型：
--
作者：
Yang Qingshan;Jiang Bin;Song Bo;Zhang Jianyue;Pan Fusheng
本工作旨在通过两步孪生变形，即沿轧制方向（RD）压缩（8％）和随后沿RD拉伸（5％）来提高轧制AZ31板材的强度和拉伸成形性。在两次孪生变形之间进行再结晶退火以避免解孪。结果表明，两步孪晶变形可以形成强c轴//RD织构，并在每个晶粒中产生大量的交叉孪晶片层。前者可以产生细化硬化效应以提高强度，后者可以有助于室温下的高拉伸成型性。
The present work aims to improve strength and stretch formability of rolled AZ31 sheet by two-step twinning deformation, i.e., compression (8%) along the rolling direction (RD) and subsequent tension (5%) along RD. A recrystallization annealing was carried out between two twinning deformations to avoid detwinning. It shows that two-step twinning deformation can form strongc-axis//RD texture and generate profuse crossed twin lamellae in each grain. The former can generate a refinement hardening effect to enhance the strength and the latter can contribute to a high stretch formability at room temperature.