Analysis of phase transformations in hydrogenated titanium metals by non-isothermal dilatometry

Master Thesis

2011

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http://hdl.handle.net/11427/12339
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thesis_ebe_2011_abbas_n.pdf (14.95 MB)
Authors
Abbas, Naseeba
Supervisors
Knutsen, Robert D
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University of Cape Town

Department
Centre for Materials Engineering
Faculty
Faculty of Engineering and the Built Environment
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Abstract
Hydrogen was used as a temporary alloying element in CP Ti and Ti-6AI-4V. The microstructural evolution and phase transformations were monitored, before, during and after hydrogenation with in-situ dilatometric testing. Wrought CP Ti and Ti-6AI-4V specimens were pre-annealed and experienced four consecutive thermal cycles (Cycles 1-4) i.e. hydrogenation, post-hydrogenation, dehydrogenation and post-dehydrogenation, during dilatometric testing. The specimen in each thermal cycle was heated to 1000°C, heating rate 1°C/min (with an isothermal hold at 1000°C for three hours for hydrogenation and dehydrogenation cycles) and then cooled to room temperature at cooling rate of 1°C/min.
Description

Includes bibliographical references (leaves 124-127).

Keywords
Materials Engineering

Reference:

Abbas, N. 2011. Analysis of phase transformations in hydrogenated titanium metals by non-isothermal dilatometry. University of Cape Town.

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