Abstract: FeCr20Al5 La and FeCr20Al5Y alloys added with rare earth metal of mass fraction 0.15% were prepared in a vacuum induction furnace. The ingots were rolled to foils with a thickness of 60 μm through forging, hot rolling and cold rolling. TEM and EDAX were used to research the form of the rare earth elements of La and Y in as prepared alloys. The results suggest that metal La and a small quantity of solid solution of La be the most form of La in as prepared FeCr20Al5 La alloy, and Fe23Y6 compound, metal Y as well as a small quantity of solid solution of Y be the most form of Y in as prepared FeCr20Al5Y alloy.
Form of rare earth elements of La and Y in FeCrAl-RE alloys
Abstract:
FeCr 20 Al 5 La and FeCr 20 Al 5 Y alloys added with rare earth metal of mass fraction 0.15% were prepared in a vacuum induction furnace. The ingots were rolled to foils with a thickness of 60?μm through forging, hot rolling and cold rolling. TEM and EDAX were used to research the form of the rare earth elements of La and Y in as prepared alloys. The results suggest that metal La and a small quantity of solid solution of La be the most form of La in as prepared FeCr 20 Al 5 La alloy, and Fe 23 Y 6 compound, metal Y as well as a small quantity of solid solution of Y be the most form of Y in as prepared FeCr 20 Al 5 Y alloy.[
(a) —TEM bright field image; (b) —Electron diffraction pattern of particle in (a) ; (c) —EDAX analysis of particle in (a)
图2 DY5中稀土Y分析
Fig.2 Analysis of rare earth element Y in DY5
(a) —TEM bright field image; (b) —EDAX analysis of particle in (a) ; (c) , (d) , (e) —Electron diffraction patterns ofparticle in (a) along [221]*, [322]*, [100]* zone axes respectively
图3 TL5中稀土La分析
Fig.3 Analysis of rare earth element La in TL5
(a) —TEM bright field image; (b) —EDAX analysis of strip in (a) ; (c) —Typical strip including La; (d) —Magnified image of part of strip in (c) ; (e) —Electron diffraction pattern of strip (zone axe [332]*)
图4 TY5中稀土Y分析
Fig.4 Analysis of rare earth element Y in TY5
(a) —Metal particles of Y; (b) —Electron diffraction pattern of particles in (a) (zone axe ; (c) —Compounds of Fe23Y6