Effect of initial lamellar structure on globularization of hot multi-forged ELI grade Ti-6Al-4V alloy

The effect of initial lamellar structure of β heat treated Tí-6Al-4V alloy on the globularization behavior during the multi-step forging was investigated. Specimens of different lamellar thicknesses were upsetted and stretched by side pressing repeatedly, i.e. multi-step forging, at the sub-transus temperature to break down the lamellar structure. The microstructural changes after multi-step forging were analyzed in the light of globularization behavior. The results showed that the thick lamellar structure was more difficult to be transformed to homogeneous equiaxed structure than thin lamellar structure.
Publisher
Trans Tech Publications
Issue Date
2007-04
Language
ENG
Citation

MATERIALS SCIENCE FORUM, v.558-559, no.PART 1, pp.529 - 532

ISSN
0255-5476
URI
http://hdl.handle.net/10203/2425
Appears in Collection
MS-Journal Papers(저널논문)
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