The Al-Rich Part of the Fe-Al Phase Diagram
The Al-Rich Part of the Fe-Al Phase Diagram
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DOI：
10.1007/s11669-015-0446-7
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发表时间：
2016-04-01
影响因子：
1.4
通讯作者：
Stein, Frank
中科院分区：
文献类型：
--
作者：
Li, Xiaolin;Scherf, Anke;Stein, Frank
Fe-Al相图的富Al部分在50 - 80 at.%之间Al包括复杂的金属间化合物相Fe 5Al 8（Al 2 O3），FeAl 2，Fe 2Al 5，和Fe 4Al 13进行了详细的重新研究。生产了一系列19种合金，并在600至1100 A ℃的温度范围内热处理长达5000 h。所获得的数据进一步补充的结果，从一些扩散对，这有助于确定相FeAl 2，Fe 2Al 5，和Fe 4Al 13的均匀性范围。用扫描电子显微镜（SEM）观察了合金的微观组织，用电子探针（EPMA）分析了合金平衡相和合金的化学成分。通过X射线衍射（XRD）和差热分析（DTA）研究了样品的晶体结构和晶格参数的变化。根据这些结果，构建了相图的富铝部分的修订版本。
The Al-rich part of the Fe-Al phase diagram between 50 and 80 at.% Al including the complex intermetallic phases Fe5Al8 (epsilon), FeAl2, Fe2Al5, and Fe4Al13 was re-investigated in detail. A series of 19 alloys was produced and heat-treated at temperatures in the range from 600 to 1100 A degrees C for up to 5000 h. The obtained data were further complemented by results from a number of diffusion couples, which helped to determine the homogeneity ranges of the phases FeAl2, Fe2Al5, and Fe4Al13. All microstructures were inspected by scanning electron microscopy (SEM), and chemical compositions of the equilibrium phases as well as of the alloys were obtained by electron probe microanalysis (EPMA). Crystal structures and the variation of the lattice parameters were studied by x-ray diffraction (XRD) and differential thermal analysis (DTA) was applied to measure all types of transition temperatures. From these results, a revised version of the Al-rich part of the phase diagram was constructed.