Enhanced formability of a magnesium alloy sheet via in-plane prestrain paths
Enhanced formability of a magnesium alloy sheet via in-plane prestrain paths
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通过面内预应变路径增强镁合金板的成形性
DOI：
10.1016/j.jallcom.2019.152278
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发表时间：
2020
影响因子：
6.2
通讯作者：
Pan Fusheng
中科院分区：
文献类型：
--
作者：
Yang Qingshan;Jiang Bin;Wang Lifei;Dai Jiahong;Zhang Jianyue;Pan Fusheng
了解孪生活动对变形特征的影响，对拓宽镁合金板材的应用范围具有重要意义。变形方式的激活与晶粒取向以及外加载荷方向密切相关。我们应用面内预应变路径结合预轧制和预压缩在横向和挤压方向来评估晶界效应的织构变化的影响。通过孪晶变形改变织构可以改善板材的室温拉伸成形性能。由预压缩引起的{10 1（-）2}方向上的孪晶织构分量提供了在拉伸成形下调节厚度应变的极好机会。
An understanding of the effect of twinning activity on deformation features is of great importance to broaden the application of Mg-alloy sheets. The activation of deformation mode is related closely to the grain orientations, as well as additional applied load direction of Mg-alloy sheets. We applied in-plane pre-strain paths combined with pre-rolling and pre-compression in the transverse and extrusion directions to evaluate the grain-boundary effects as influenced by texture variation. Texture change via twinning deformation can improve the stretch formability of sheet thinning at room temperature. Twin-texture components on the {10 1 (—) 2} direction induced by pre-compression offer an excellent opportunity to accommodate thickness strain under stretch forming.