Thesis-2004-Putman.pdf (45.51 MB)
Modelling of microstructural evolution in austempered ductile iron
thesis
posted on 2018-11-20, 10:10 authored by Duncan C. PutmanAustempered ductile iron (ADI) has a microstructure consisting mainly of high carbon
austenite, bainitic ferrite and graphite nodules, produced by a two stage austenitisation and
austempering heat treatment. The resulting microstructure gives these materials a combination
of high strength and toughness, making them attractive for a wide range of applications. To
increase surface hardness, ductile iron alloys can also be cast into chilled moulds to induce
carbide formation in the required areas of components. These chilled ductile iron alloys can
also be subjected to austenitisation and austempering heat treatments, therefore further
improving the mechanical properties of the components core, whilst retaining the hard
carbides present in the surface layers.
This work encompasses three main areas: two are concerned with the production of
generic microstructure models, which work in conjunction with thermodynamic modelling
software MTDATA; and one relates to high temperature X-ray diffraction experiments. [Continues.]
History
School
- Aeronautical, Automotive, Chemical and Materials Engineering
Department
- Materials
Publisher
© Duncan Colin PutmanPublisher statement
This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/Publication date
2004Notes
A Doctoral Thesis. Submitted in partial fulfilment of the requirements for the award of the degree of Doctor of Philosophy at Loughborough University.Language
- en