Interface behavior and tensile properties of Mg-14Li-3Al-2Gd sheets prepared by four-layer accumulative roll bonding
Interface behavior and tensile properties of Mg-14Li-3Al-2Gd sheets prepared by four-layer accumulative roll bonding
复制标题
四层累积滚压Mg-14Li-3Al-2Gd板材界面行为及拉伸性能
DOI：
10.1016/j.jmapro.2020.11.021
复制
发表时间：
2021-01-01
影响因子：
6.2
通讯作者：
Hou, Legan
中科院分区：
文献类型：
--
作者：
Wei, Zhen;Zheng, Haipeng;Hou, Legan
采用四层累积轧制工艺（ARB），在一个周期内进行两步轧制，制备了 Mg-14Li-3Al-2Gd 板材。研究了Mg-14Li-3Al-2Gd板材的界面行为，分析了合金板材的断口形貌和力学性能。结果表明，ARB过程中单层法线方向晶粒数量迅速减少，晶粒尺寸逐渐减小。随着ARB循环的增加，微观结构演化逐渐从单层演化过渡到多层演化。同时，强度、界面结合强度不断增加，塑性不断下降。
Mg-14Li-3Al-2Gd sheets were prepared by four-layer accumulative roll bonding (ARB) with two-step rolling in one cycle. The interface behavior of Mg-14Li-3Al-2Gd sheets was investigated, and the fracture morphology and mechanical properties of the alloy sheets were analyzed. Results show that, the number of grains in the direction of normal direction of the single-layer decreases rapidly and the grain size decreases gradually in the ARB process. With the increase of the ARB cycle, the microstructure evolution transits from single-layer evolution to multi-layer evolution gradually. Meanwhile, the strength, interfacial bond strength increases and plasticity decreases constantly.