Effect of self-accommodation on α/α boundary populations in pure titanium


Wang, S.C., Aindow, M. and Starink, M.J. (2003) Effect of self-accommodation on α/α boundary populations in pure titanium. Acta Materialia, 51, (9), 2485-2503. (doi:10.1016/S1359-6454(03)00035-1).

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Description/Abstract

An analysis of the shape strains produced by the martensitic β→α transformation in pure titanium indicates that there are three likely slip systems which could operate to give the complementary shear. The greatest degree of self-accommodation of the shape strains was given by clusters of three variants of α grains and two kinds of clusters were identified. In one kind of cluster, the high-angle grain boundaries (HAGBs) formed between adjacent laths of different variants would all be [ 1 1 2 0 ] / 60º -type, and in the other kind they would all be [ 10 5 5 3 ] / 63.3º. -type. Analysis of the frequency distributions for misorientation angles in pure Ti using electron backscattered diffraction confirms a strong preference for the formation of these two types of HAGBs, with 78% of the HAGBs being classed as such, as compared to 36% which one would expect for a random distribution of variants. A statistical analysis of nucleation, which accounts for the observed frequencies of the different types of HAGBs, is proposed.

Item Type: Article
Additional Information: to obtain a copy of this paper, e-mail wangs@soton.ac.uk
ISSNs: 1359-6454 (print)
Related URLs:
Keywords: crystallography, grain boundary, titanium, self-accommodation, martensite transformation
Subjects: T Technology > TN Mining engineering. Metallurgy
Q Science > QA Mathematics
T Technology > TA Engineering (General). Civil engineering (General)
Divisions: University Structure - Pre August 2011 > School of Engineering Sciences
ePrint ID: 22396
Date Deposited: 20 Mar 2006
Last Modified: 27 Mar 2014 18:11
URI: http://eprints.soton.ac.uk/id/eprint/22396

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