Title :
The Study of the Crystalline Structure of the Phases in the Al-Ni Alloys Ultra Rapid Solidification
Author :
Cristea, Lidia ; Cristea, Enona
Author_Institution :
Polytech. Univ. of Bucharest, Bucharest, Romania
Abstract :
Melt-spinning and melt-extraction methods of rapid solidification have been applied on Al-Ni alloys in the lower and higher composition. For guiding appreciations of the peripheral speed of the cooling disk it is used the dependence between the thickness of the solidified fibbers and the peripheral speed of the extraction disk. The cooling speed calculated on the basis of the thermo transfer coefficient in accordance with the thickness of the fibers has lead to values of the cooling speed of one million C/sec (fibers of 100 micro meters). Alloys with 1, 86% Ni content in pouring status and ultra rapid solidified have been analyzed from the point of crystalline structure. The paper is a short analysis of the use of the X-ray diffraction techniques for observing the effects of ultra rapid solidification in Al-Ni alloys. This technique permits to observe highlighting the imperfections in the crystal pattern.
Keywords :
X-ray diffraction; aluminium alloys; crystal structure; dislocations; fibres; melt spinning; nickel alloys; rapid solidification; AlNi; X-ray diffraction; aluminium alloys; cooling disk; crystal imperfections; crystalline structure; dislocations; melt-extraction methods; melt-spinning; solidified fibers; thermotransfer coefficient; ultrarapid solidification; Aluminum alloys; Art; Cooling; Crystallization; Microstructure; Nickel alloys; Packaging; Solid state circuits; Temperature; X-ray diffraction; X-ray diffraction; cristalline pattern; rapid solidified;
Conference_Titel :
Quantum, Nano and Micro Technologies, 2009. ICQNM '09. Third International Conference on
Conference_Location :
Cancun
Print_ISBN :
978-1-4244-3349-0
Electronic_ISBN :
978-0-7695-3524-1
DOI :
10.1109/ICQNM.2009.39
