Microstructure evolution of martensitic Ti-6Al-4V alloy during warm deformation
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journal contribution
posted on 2024-06-04, 02:06 authored by Q Chao, Peter HodgsonPeter Hodgson, Hossein BeladiHossein BeladiThe microstructure evolution of martensitic Ti-6Al-4V alloy was investigated through uniaxial hot compression at 700°C and a strain rate of 10-3 s-1. A combination of scanning electron microscopy observation in conjunction with high resolution electron back scattered diffraction (EBSD) was used to characterize the microstructure in detail. The development of the microstructure displayed continuous fragmentation of martensitic laths with increasing strain (i.e. continuous dynamic recrystallization), concurrently with decomposition of supersaturated martensite resulting in the formation of equiaxed grains. At a strain of 0.8, an ultrafine equiaxed grained structure with mostly high angle grain boundaries was successfully obtained. The current work proposes a novel approach to produce equiaxed ultrafine grains in a Ti-6Al-4V alloy through thermomechanical processing of a martensitic starting microstructure. © (2014) Trans Tech Publications, Switzerland.
History
Journal
Materials Science ForumVolume
783-786Pagination
679-684Location
Stafa-Zurich, SwitzerlandISSN
1422-6375ISBN-13
9783038350736Language
engPublication classification
C Journal article, C1 Refereed article in a scholarly journalCopyright notice
2014, Trans Tech PublicationsPublisher
Trans Tech PublicationsUsage metrics
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