Tang Yan, Le Qichi, Wang Tong, Chen Xingrui
Key Lab of Electromagnetic Processing of Materials, Ministry of Education, Northeastern University, Shenyang 110819, China.
Materials (Basel). 2017 Oct 12;10(10):1167. doi: 10.3390/ma10101167.
The microstructural evolution, mechanical properties, and mathematical relationship of an α, α + β, and β phase Mg-Li alloy during the cold rolling and annealing process were investigated. The results showed that the increased Li element gradually transformed the Mg matrix structure from hcp to bcc. Simultaneously, the alloy plasticity was improved remarkably during cold rolling. In the annealing process, a sort of abnormal grain growth was found in Mg-11Li-3Al-2Zn-0.2Y, but was not detected in Mg-5Li-3Al-2Zn-0.2Y and Mg-8Li-3Al-2Zn-0.2Y. Moreover, the mechanical properties of alloy were evidently improved through a kind of solid solution in the β matrix. To accurately quantify this strengthening effect, the method of mathematical modeling was used to determine the relationship between strength and multiple factors.
研究了α、α+β和β相Mg-Li合金在冷轧和退火过程中的微观组织演变、力学性能及数学关系。结果表明，Li元素的增加使Mg基体结构逐渐从hcp转变为bcc。同时，合金在冷轧过程中的塑性显著提高。在退火过程中，在Mg-11Li-3Al-2Zn-0.2Y中发现了一种异常晶粒长大现象，但在Mg-5Li-3Al-2Zn-0.2Y和Mg-8Li-3Al-2Zn-0.2Y中未检测到。此外，通过β基体中的一种固溶体，合金的力学性能明显提高。为了准确量化这种强化效果，采用数学建模方法确定强度与多种因素之间的关系。
