Isothermal oxidation of α2-Ti3Al

被引：26

作者：

Dettenwanger, F ^{[1
]}

Schütze, M ^{[1
]}

机构：

[1] Dechema EV, Karl Winnacker Inst, D-60486 Frankfurt, Germany

来源：

OXIDATION OF METALS | 2000年 / 54卷 / 1-2期

关键词：

titanium aluminides; oxidation; oxygen-affected zone; alpha case; TEM;

D O I：

10.1023/A:1004606830538

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

The isothermal oxidation behavior of binary Ti-25 at.%Al was studied ar 1073, 1173, and 1273 K in air and oxygen with emphasis on the microstructure of the subsurface zone underneath the external oxide scale. Thermogravimetric analysis, acoustic-emission (AE) analysis, light microscopy, scanning electron microscopy (SEM) atomic force microscopy (AFM), and cross-sectional transmission electron microscopy (TEM) were carried out. Three layers could be identified in the subsurface region consisting of an internal oxidation zone of alpha-Al2O3, and alpha-Ti, a ternary phase with the empirical formula Ti-21Al-15O (at.%), and an oxygen penetration zone consisting of alpha(2)-Ti3Al(O).

引用

页码：121 / 138

页数：18

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