Deakin University
Browse

Microstructure evolution of martensitic Ti-6Al-4V alloy during warm deformation

Version 2 2024-06-04, 02:06
Version 1 2015-02-27, 10:36
journal contribution
posted on 2024-06-04, 02:06 authored by Q Chao, Peter HodgsonPeter Hodgson, Hossein BeladiHossein Beladi
The 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 Forum

Volume

783-786

Pagination

679-684

Location

Stafa-Zurich, Switzerland

ISSN

1422-6375

ISBN-13

9783038350736

Language

eng

Publication classification

C Journal article, C1 Refereed article in a scholarly journal

Copyright notice

2014, Trans Tech Publications

Publisher

Trans Tech Publications