Dr Colleen Bettles - Researcher Profile

Colleen Bettles

Address

Ctr of Excell Design in Light Metals
Faculty of Engineering, Clayton

Contact Details

Tel: +61 3 990 51966

Email: Colleen.Bettles@monash.edu


Biography

Colleen works in the Faculty of Engineering at Monash University as a Senior Research Fellow.

Colleen's research is focused in the light metals area, and is primarily concerned with the development of mechanical properties through alloy development and microstructure manipulation. An understanding of the fundamental deformation mechanisms in magnesium, aluminium and titanium alloy systems is combined with the development of novel microstructures, through modifications to nucleation mechanisms, precipitation behaviours and thermomechanical processing routes, to generate alloys with unusual mechanical properties at both room and elevated temperatures.
 

Colleen is the Assistant Director of the ARC Centre of Excellence for Design in Light Metals.

Keywords

Materials Engineering, Metallurgical Engineering, Metallurgy, magnesium, titanium

Qualifications

DOCTOR OF PHILOSOPHY - METALLURGY
Institution: Royal Melbourne Institute of Technology - RMIT
Year awarded: 1992
BACHELOR ENGINEERING (CHEMICAL & MATERIALS)
Institution: University of Auckland
Year awarded: 1977

Publications

Books

Bettles, C.J., Barnett, M.R. (eds), 2012, Advances in wrought magnesium alloys: Fundamentals of processing, properties and applications, Woodhead Publishing Ltd, Cambridge UK.

Book Chapters

Qian, M., Schaffer, G., Bettles, C., 2010, Sintering of titanium and its alloy, in Sintering of advanced materials: fundamentals and processes, eds Zhigang Zak Fang, Woodhead Publishing, UK, pp. 323-354.

Journal Articles

Lynch, P.A., Stevenson, A.W., Liang, D., Bettles, C.J., 2012, In situ study of plastic deformation in a Mg-Ce alloy using polychromatic micro X-ray diffraction, Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing [P], vol 550, Elsevier Science SA, Lausanne Switzerland, pp. 1-9.

Lynch, P., Parry, D., Liang, D., Kirkham, R., Davey, P., Stevenson, A., Bettles, C., Gibson, M., Tomus, D., 2011, A uniaxial tensile stage with tracking capabilities for micro X-ray diffraction applications, Journal Of Applied Crystallography [P], vol 44, issue 3, Wiley-Blackwell, Malden MA USA, pp. 610-617.

Bettles, C., Lynch, P., Stevenson, A., Tomus, D., Gibson, M., Wallwork, K., Kimpton, J., 2011, In situ observation of strain evolution in Cp-Ti over multiple length scales, Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science [P], vol 42A, issue 1, Springer, USA, pp. 100-110.

Ng, H., Devaraj, A., Nag, S., Bettles, C., Gibson, M., Fraser, H., Muddle, B., Banerjee, R., 2011, Phase separation and formation of omega phase in the beta matrix of a Ti-V-Cu alloy, Acta Materialia [P], vol 59, issue 8, Pergamon-Elsevier Science Ltd, Oxford UK, pp. 2981-2991.

Ng, H., Bettles, C., Muddle, B., 2011, Some observations on deformation-related discontinuous precipitation in an Al-14.6at.%Zn alloy, Journal of Alloys and Compounds [P], vol 509, issue 5, Elsevier Science SA, Switzerland, pp. 1582-1589.

Yang, Y., Luo, S., Bettles, C., Schaffer, G., Ma, Q., 2011, The effect of Si additions on the sintering and sintered microstructure and mechanical properties of Ti-3Ni alloy, Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing [P], vol 528, issue 24, Elsevier Science SA, Switzerland, pp. 7381-7387.

Bettles, C., Tomus, D., Gibson, M., 2011, The role of microstructure in the mechanical behaviour of Ti-1.6 wt.%Fe alloys containing O and N, Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing [P], vol 528, issue 15, Elsevier Science SA, Switzerland, pp. 4899-4909.

Ng, H., Douguet, E., Bettles, C., Muddle, B., 2010, Age-hardening behaviour of two metastable beta-titanium alloys, Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing [P], vol 527, issue 26, Elsevier B.V., The Netherlands, pp. 7017-7026.

Bettles, C.J., Gibson, M., Stevenson, A.W., Tomus, D., Lynch, P., 2010, In-situ observation of strain evolution in CP-Ti during uniaxial tensile loading, Nuclear Instruments & Methods In Physics Research Section A-Accelerators Spectrometers Detectors And Associated Equipment [P], vol 619, issue 1, Elsevier BV, Amsterdam, The Netherlands, pp. 302-305.

Gibson, M., Fang, X., Bettles, C., Hutchinson, C., 2010, The effect of precipitate state on the creep resistance of Mg-Sn alloys, Scripta Materialia [P], vol 63, issue 8, Pergamon Elsevier, UK, pp. 899-902.

Bettles, C.J., Moss, M., Lapovok, R.Y., 2009, A Mg-Al-Nd alloy produced via a powder metallurgical route, Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing [P], vol 515, issue 1-2, Elsevier, USA, pp. 26-31.

Sudholz, A., Birbilis, N., Bettles, C.J., Gibson, M., 2009, Corrosion behaviour of Mg-alloy AZ91E with atypical alloying additions, Journal of Alloys and Compounds [P], vol 471, issue 1-2, Elsevier, Switzerland, pp. 109-115.

Bettles, C.J., Gibson, M.A., Zhu, S., 2009, Microstructure and mechanical behaviour of an elevated temperature Mg-rare earth based alloy, Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing [P], vol 505, issue 1-2, Elsevier BV, Switzerland, pp. 6-12.

Bettles, C.J., Puehringer, T., Morton, A.J., Tomus, D., Gibson, M.A., 2009, The effect of fe additions on the microstructure and mechanical properties of A Ti-Al-Mn alloy, International Journal of Modern Physics B [P], vol 23, issue 6-7, World Scientific Publishing, USA, pp. 783-789.

Lapovok, R.Y., Tomus, D., Bettles, C.J., 2008, Shear deformation with imposed hydrostatic pressure for enhanced compaction of powder, Scripta Materialia, vol 58, issue 10, Elsevier, Oxford, UK, pp. 898-901.

Bettles, C.J., Lapovok, R.Y., Ng, H., Tomus, D., Muddle, B.C., 2007, Approaches to the design and processing of novel titanium alloys, Advanced Materials Research [P], vol 29-30, Trans Tech Publications, Switzerland, pp. 127-130.

Moss, M., Lapovok, R.Y., Bettles, C.J., 2007, The equal channel angular pressing of magnesium and magnesium alloy powders, Journal of Materials - JOM, vol 59, issue 8, Mineral Metals Materials Society, USA, pp. 54-57.

Mendis, C.L., Bettles, C.J., Gibson, M.A., Hutchinson, C., 2006, An enhanced age hardening response in Mg-Sn based alloys containing Zn, Materials Science & Engineering A, vol 435-436, Elsevier, Netherlands, pp. 163-171.

Mendis, C.L., Bettles, C.J., Gibson, M.A., Gorsse, S., Hutchinson, C., 2006, Refinement of precipitate distributions in an age-hardenable Mg-Sn alloy through microalloying, Philosophical Magazine Letters, vol 86, issue 7, Taylor and Francis, UK, pp. 443-456.

Bettles, C.J., Gibson, M.A., 2005, Current wrought magnesium alloys: strengths and weaknesses, JOM, vol 57, issue 5, Minerals Metals Materials Society, Warrendale USA, pp. 46-49.

Song, G., StJohn, D., Bettles, C.J., Dunlop, G.L., 2005, The corrosion performance of magnesium alloy AM-SC1 in automotive engine block applications, JOM, vol 57, issue 5, Mineral Metals Materials Society, Warrendale USA, pp. 54-56.

Barnett, M.R., Nave, M.D., Bettles, C.J., 2004, Deformation microstructures and textures of some cold rolled Mg alloys, Materials Science and Engineering A, vol 386, issue 1-2, Elsevier, Lausanne Switzerland, pp. 205-211.

Bettles, C.J., Gibson, M.A., Venkatesan, K., 2004, Enhanced age-hardening behaviour in Mg-4 wt.% Zn micro-alloyed with Ca, Scripta Materialia, vol 51, issue 3, Pergamon-Elsevier Science Ltd, Oxford England, pp. 193-197.

Bettles, C.J., Gibson, M.A., 2003, Microstructural design for enhanced elevated temperature properties in sand-castable magnesium alloys, Advanced Engineeering Materials, vol 5, issue 12, Wiley-V C H Verlag GmBH, Weinheim Germany, pp. 859-865.

Bettles, C.J., 2003, The effect of gold additions on the ageing behaviour and creep properties of the magnesium alloy AZ91E, Materials Science and Engineering A, vol 348, issue 1-2, Elsevier, Lausanne Switzerland, pp. 280-288.

Rossouw, C.J., Bettles, C.J., Davis, T.J., Forwood, C.T., Miller, P.R., Venkatesan, K., 2001, Location of Zn within the Mg12(LaxCe1-x) lattice by X-ray incoherent channelling patterns, Acta Crystallographica Section A, vol 57, issue 3, Munksgaard International Publishers Ltd, Copenhagen Denmark, pp. 321-332.

Conference Proceedings

Lapovok, R.Y., Qian, M., Bettles, C.J., 2012, Comparison of different routes for production of CP-Ti powder compacts used as preform for forging of con-rod, Proceedings of the 12th World Conference on Titanium (Ti-2011), 19th June 2011 to 24th June 2011, Science Press, Beijing China, pp. 1592-1596.

Ng, H., Bettles, C., Muddle, B., 2011, Evolution of twin-related variants of alpha phase in a Ti-V-Cu alloy, Solid State Phenomena - Solid-Solid Phase Transformations in Inorganic Materials, 6 June 2011 to 11 June 2011, Trans Tech Publications, Switzerland, pp. 481-486.

Ju-Beom, L., Bettles, C., Muddle, B., Park, N., 2010, Effects of impurity elements on green strength of powder compacts, Materials Science Forum, 2 August 2010 to 6 August 2010, Trans Tech Publications, Switzerland, pp. 811-814.

Tomus, D., Qian, M., Yu, P., Brice, C., Bettles, C., Muddle, B., 2010, Microstructural characteristics of electron beam processed AI-2Sc, Materials Science Forum, 2 August 2010 to 6 August 2010, Trans Tech Publication, Switzerland, pp. 910-913.

Luo, S., Bettles, C., Yan, M., Schaffer, G., Qian, M., 2010, Microwave sintering of titanium, Materials Science Forum, 2 August 2010 to 6 August 2010, Trans Tech Publications, Switzerland, pp. 141-147.

Al-Salihi, H., Bettles, C., Muddle, B., 2010, The ageing behavior of titanium alloy Ti-10V-2Fe-3Al, Materials Science Forum, 2 August 2010 to 6 August 2010, Trans Tech Publications, Switzerland, pp. 843-846.

Gibson, M.A., Bettles, C.J., Zhu, S., Easton, M.A., Nie, J.F., 2009, Microstructure and mechanical properties of a Mg-rare earth based alloy AM-SC1, Magnesium Technology 2009, 15 February 2009 to 19 February 2009, Minerals, Metals and Materials Society, Warrendale PA, USA, pp. 234-248.

Zhu, S., Gibson, M.A., Nie, J.F., Easton, M.A., Bettles, C.J., 2009, On the creep resistance of HPDC Mg-RE based alloys, Materials Science Forum, 29 June 2009 to 1 July 2009, Trans Tech Publications Ltd, Zurich, Switzerland, pp. 453-458.

Sudholz, A., Birbilis, N., Bettles, C.J., Gibson, M., 2007, Corrosion behaviour of Mg-Alloy AZ91E with atypical alloying additions, Corrosion Control 007, 25-28 November 2007, Australasian Corrosion Association Inc, Melbourne, Victoria, Australia, p. 90.

Easton, M.A., Dunlop, G.L., Abbott, T., Gibson, M.N., Bettles, C.J., Davies, C.H.J., Barnett, M., Beer, A., 2007, Mg alloy research in the CAST co-operative research centre, Workshop on advanced magnesium alloys and their applications, 1st-4th August 2007, Shanghai Jiao Tong University, China, pp. 8-12.

Mendis, C.L., Bettles, C.J., Gibson, M.A., Gorsse, S., Hutchinson, C., 2006, The refinement of precipitate distributions in a Mg-Sn-Alloy through microalloying, Magnesium: Proceedings of the International Conference on Magnesium Alloys and their applications, 6th to 9th November 2006, Wiley VCH, Weinheim, Germany, pp. 480-485.

Bettles, C.J., Venkatesan, K., Nie, J.F., 2003, Microstructure and mechanical properties of MEZ casting alloy, Materials Science Forum: Magnesium Alloys. Part 1. Proc. Second Osaka International Conference on Platform Science and Technology for Advanced Magnesium Alloys 2003, 26/01/03 to 30/01/03, Trans Tech Publications, Switzerland, pp. 273-278.

Wilson, R., Bettles, C.J., Muddle, B.C., Nie, J.F., 2003, Precipitation and hardening in Mg-3 wt%Nd(-Zn) casting alloys, Materials Science Forum: Magnesium Alloys 2003. Part 1. Proc. Second Osaka International Conference on Platform Science and Technology for Advanced Magnesium Alloys 2003, 26/01/03 to 30/01/03, Trans Tech Publications, Switzerland, pp. 267-272.

Other

Gibson, M., Easton, M., Bettles, C., 2009, Magnesium based alloy, Australia.

Gibson, M.A., Bettles, C.J., 2008, Hpdc magnesium alloy, USA.

Gibson, M.A., Bettles, C.J., 2007, Magnesium alloy, Europe.

Forwood, C.T., Bettles, C.J., 2006, Creep resistance magnesium alloy, USA.

East, D.R., Renshaw, D.I., Gibson, M.A., Bettles, C.J., Borbidge, W.E., Alien, R.V., Liang, D., 2006, Magnesium alloy sheet and its production, USA.

Postgraduate Research Supervisions

Current Supervision

Program of Study:
(DOCTORATE BY RESEARCH).
Thesis Title:
Die and Mould Production: Die Extrusion Behavior of Titanium 10V-2Fe-3A1 alloy.
Supervisors:
Muddle, B (Main), Bettles, C (Associate).
Program of Study:
(DOCTORATE BY RESEARCH).
Thesis Title:
Metallurgical bonding during consolidation of Ti particulate.
Supervisors:
Bettles, C (Main).

Completed Supervision

Student:
Moss, M.
Program of Study:
New solid state processing route for development of novel magnesium alloy rod from powder. (Masters) 2008.
Supervisors:
Bettles, C (Main), Lapovok, R (Associate).
Student:
Wilson, R.
Program of Study:
MICROSTRUCTURE AND ELEVATED TEMPERATURE PROPERTIES OF Mg-3wt%Nd ALLOYS WITH AND WITHOUT ZINC ADDITIONS. (PHD) 2005.
Supervisors:
Muddle, B (Main), Bettles, C (Associate), Nie, J (Associate).