Tailoring the Mechanical Properties of Titanium Alloys via Plasticity Induced Transformations

Doctoral thesis (2010)

Authors

Contributors

S. Van der Zwaag (promotor)
Department
Aerospace Materials and Manufacturing / Novel Aerospace Materials group (Aerospace Engineering) (TU Delft)
Copyright: © 2010 Neelakantan, S.
More Info
expand_more

Published Date

07-07-2010

Reuse Rights

Other than for strictly personal use, it is not permitted to download, forward or distribute the text or part of it, without the consent of the author(s) and/or copyright holder(s), unless the work is under an open content license such as Creative Commons.

Faculty

Aerospace Engineering

Department

Aerospace Materials and Manufacturing / Novel Aerospace Materials group

Abstract

Titanium alloys possess good corrosion properties, high temperature stability and high strength-to-weight ratio. However, they fall short in providing the optimum strength-ductility relation in the most demanding structural applications, including the aerospace sector. Inspired by the possibility of enhancing the strength-ductility relation in steels through the TRIP effect, the thesis elucidates at identifying and quantifying the key factors that effectively control and/or promote such effect (termed here as Plasticity induced Transformation in Titanium alloys (PiTTi)), and exploring the plausible property improvements it may lead in metastable beta titanium alloys. Controlling the key factors that effectively promote such effect through experimentation, and a novel theoretical alloy design methodology lead to new grades of titanium alloys with potential for improved properties.