Intermetallic Al2Cu Orientation And Deviation Angle Measured By The Rotating Directional Test During Directional Solidification
K. Gao, S.M. Li, H.Z. Fu
Volume 2, Issue 5, Page 368-372 | DOI: 10.5185/amlett.2011.5013am2011
Keywords: Directional solidification; intermetallic compound; RO-XRD; orientation and deviation angle.
The orientation and deviation angle of intermetallic Al2Cu phase in directionally solidified Al-40wt. %Cu hypereutectic alloy were investigated using a rotating orientation X-ray diffraction (RO-XRD) method. Experimental results show that preferred planes (110) and (310) of the Al2Cu phase occur at 10 μm/s and the growth directions of the two planes are not well aligned with the heat flux direction. The growth direction of the preferred plane (110) has a 7.24 º~11.43 º angle with the heat flux direction. For the direction of the plane (310), its deviation angle attains 2.68 º~20.82 º. Besides, the measured data agree well with the previously reported results, indicating that the RO-XRD method is an effective method for measuring the orientation and deviation angle of the phase in polycrystalline materials. Copyright © 2011 VBRI press.