ISSN:
1573-4803
Source:
Springer Online Journal Archives 1860-2000
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Abstract Ti–25Al–10Nb–3V–1Mo alloy has been prepared by gas atomization with atomizing pressure above 8 MPa. The cooling rate of 5×103∼3×105 K s-1 was obtained according to secondary dendritic arm spacing, as the particle size is 30∼300 μm. It is known that in the big particles two dendrite morphologies can be found, cellular dendrite and well-developed dendrite, and in small particles there exists only well-developed dendrite. The surface of particles is characteristic of solidification that is identical to the observation on the cross-sectional views. The micrographs of cross-sectional views show that the big particles, whether of cellular dendrite or well-developed dendrite, solidify by multiple nucleation events while the small particles of well-developed dendrite solidify from a single nucleation event. The microstructure of the alloy consists of single β0 phase.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1023/A:1018683909004
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