Article ID Journal Published Year Pages File Type
5455579 Materials Science and Engineering: A 2017 20 Pages PDF
Abstract
A Ti-6Al-4V alloy was used to examine the effect of martensitic (αʹ) or lamellar (α + β) microstructures on grain refinement and the hcp to fcc phase transformation during HPT processing. There was significant grain refinement with grain sizes of ~ 30 and ~ 40 nm in the αʹ and α + β microstructures, respectively, and with the occurrence of an allotropic hcp to fcc phase transformation in the αʹ sample after HPT. A high volume fraction of boundaries, together with a substructure containing initial defects of the martensitic sample, promotes the formation of the fcc phase during the HPT processing.
Related Topics
Physical Sciences and Engineering Materials Science Materials Science (General)
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