Phase equilibria, crystal structure of δ1-MnZn9 and thermodynamic re-assessment of the Zn-Mn system
作者:Xiaojing Li、Shuhong Liu、Jinhui Huang、Dandan Huang、Yong Du
DOI:10.1016/j.jallcom.2020.158484
日期:2021.5
The phase relationship of the Zn-Mn system in the range of 0 to 12 at.% Mn at 400 °C was experimentally investigated. Four phases, viz, ε, δ1-MnZn9, ζ-MnZn13 and (Zn) were observed in the present work. The δ1-MnZn9 phase was determined to be a hexagonal structure (space group P63/mmc, No. 194, lattice parameters: а = b = 1.2771 Å, c = 5.7069 Å) based on the single-phase X-ray diffraction data and confirmed
实验研究了Zn-Mn体系在400°C下Mn在0至12 at。%范围内的相位关系。四个阶段,即,ε,δ 1 -MnZn 9,ζ-锰锌13和(Zn)的在目前的工作中观察到。的δ 1 -MnZn 9被确定的相位是一个六边形结构(空间群为P6 3 / mmc的,No。194,晶格参数:a = b = 1.2771Å,c = 5.7069Å)基于单相X射线衍射数据,并通过分析高分辨率图像和选定区域的电子衍射得到了确认。当前获得的实验结果,结合可靠的文献数据,被用来利用CALPHAD(PHHAse图的计算)方法对Zn-Mn系统进行精确的热力学描述。目前的计算结果可以很好地再现实验数据。Scheil凝固模拟和铸态合金的相分析也验证了目前获得的热力学参数的可靠性。