[Neutron] ANSTO POST DOCTORAL FELLOWSHIP - Thermo Mechanical Processes [SEC=UNCLASSIFIED]

[Klaus-Dieter Liss]

ANSTO POST DOCTORAL FELLOWSHIP

In-situ neutron and X-ray diffraction methods for phase composition and microstructural investigations related to thermo-mechanical processes.

Salary $A66,451 (plus Super)

2 Year Term

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The OFFICIAL announcement and information to apply is linked under VACANCIES on the ANSTO home page
http://www.ansto.gov.au

(https://ansto.nga.net.au/fnt_info_page.cfm?JobID=252&info_mode=new_app&MemberID=0)

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ADDITIONAL INFORMATION ABOUT THE POSITION - CONTEXT - FIELD OF WORK

BACKGROUND

Engineered properties of metals play an important role for future applications, where devices will have to be lighter, thinner, stronger, longer lasting or applied under more extreme conditions such as high temperatures, radiation fields and pressures. Such requirements can only be achieved with detailed understanding of the physical and chemical behaviour of the material during its thermo-mechanical processing or under thermo-mechanical load within its application.
Modern neutron and synchrotron radiation facilities with dedicated instrumentation offer the possibility to study multiple aspects in an un-preceded way, such as phase composition, grain correlations, texture, grain size, or strain, which can be in real-time, in-situ, local in a bulk environment, or with ultimate resolution.
ANSTO has expertise in both diffraction and materials science and has recently created the project 'Modern Diffraction Methods Applied to Thermo-Mechanical Processes in Materials Science'. The goal of the project is to be recognized as the leading group in the world using diffraction methods to study deformation processes in metals, particular related to high temperature processing and performance in extreme conditions.
So far not many groups in the world use these modern diffraction techniques in-situ for metallurgical characterization, since knowledge across different disciplines has to be combined for successful data evaluation. A whole range of different instruments or techniques with respective data treatment issues have to be mastered for complementary results, such as powder diffraction; small angle scattering; large beam integration versus small beam resolution; single crystal and multi crystallite techniques; diffuse scattering; imaging and tomography; neutron in complement to X-radiation to give some examples. This has to be married with expertise of the sample systems under study, in particular with focus of interest of the Institute of Materials Engineering (IME) at ANSTO, furthered with the knowledge of traditional metallurgical investigation methods.

THE POSITION

The goal of the work is to understand the physical evolution and transition of phases (composition, phase transitions, kinetics, crystallographic order / disorder) and microstructural properties (grain size, grain correlations, texture, strain, precipitates) as a function of external variables, such as temperature or mechanical stress. Sample systems will be metals and intermetallic compounds relevant for IME and other collaborators. The candidate will perform in-situ measurements using neutron and synchrotron X-ray powder diffraction techniques on polycrystalline solids and complementary, when available, small angle scattering, analyze the data. From the findings, the successful candidatewill identify new research opportunities in this field and propose / perform further measurements at national and international facilities. Results shall be published in highly recognized journals and presented on conferences and workshops.

The postdoc will be supervised by Dr. Klaus-Dieter Liss

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Dr. Klaus-Dieter Liss
Senior Research Fellow

The Bragg Institute, ANSTO
PMB 1, Menai, NSW 2234, Australia
New Illawarra Road, Lucas Heights
T: +61-2-9717+9479

F: +61-2-9717+3606
M: 0419 166 978
E: kdl at ansto.gov.au
http://www.ansto.gov.au/research/bragg_institute/science/scientific_projects/thermo
http://liss.freeshell.org
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