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Stuart Maloy
Scientist 5, MST-8
Email
(505) 667-9784

Stuart Maloy has been a Technical Staff Member at Los Alamos National Laboratory for 26 years and is the advanced reactor core materials technical leader for the Fuel Cycle Research and Development’s Advanced Fuels campaign at LANL. He has a Bachelors (’89) Masters (’91) and PhD (’94) in Materials Science from Case Western Reserve University and is a registered PE in Metallurgy. He has applied his expertise to characterizing and testing the properties of metallic and ceramic materials in extreme environments such as under neutron and proton irradiation at reactor relevant temperatures. This includes testing the mechanical properties (fracture toughness and tensile properties) of Mod 9Cr-1Mo, HT-9, 316L, 304L, Inconel 718, Al6061-T6 and Al5052 after high energy proton and neutron irradiations using accelerators and fast reactors. Characterization of materials after testing includes using transmission electron microscopy for analyzing defects such as dislocations, twins and second phases, using high resolution electron microscopy to characterize defects at an atomic level and nanoscale mechanical testing. Stuart has >160 peer reviewed technical publications and numerous presentations.

Education

P.E., Materials Engineering
New Mexico, license no 17870

Ph.D., Metallurgy and Materials Science
Case Western Reserve University
January 1994

M.S., Metallurgy and Materials Science
Case Western Reserve University
August 1991

B.S., Metallurgy and Materials Science
Case Western Reserve University
May 1989

Positions

- Present | Scientist 5
2012 - 2013 | MST-8 Acting Deputy Group Leader
2009 - 2012 | LANL Advanced Nuclear Energy Programs Program Manager

Awards

TMS Hardy Award - February 1998
LAAP (Los Alamos Awards Program) Award for designing and fabricating the materials irradiation experiments that were fielded in the 1997 LANSCE accelerator runs, in support of the Accelerator Production of Tritium (APT) project.- October 1997
EMSA Presidential Scholar - August 1991

Professional Societies

The Mining Metals and Materials Society (TMS) 1987-present
American Nuclear Society (ANS) 2003-present

Publications

S.A. Maloy, A.H. Heuer, J.J. Lewandowski, and J.J. Petrovic, "Carbon Additions to MoSi2: Improved High Temperature Properties", J. Amer. Cer. Soc., 74(10), 2704-2706 (1991)
S.A. Maloy, "A TEM Study of Slip Systems in MoSi2/WSi2 Alloys:, EMSA Proceedings, 49th Annual Meeting, Edited by G.W. Bailey and E.L. Hall, San Francisco Press, p. 942, (1991).
S.A. Maloy, J.J. Lewandowski, A.H. Heuer and J.J. Petrovic, "The Effect of Carbon Additions on the Mechanical Properties of MoSi2", Mater. Sci. and Engrg., A155, 159-163 (1992).
T.E. Mitchell, R.G. Castro, J.J. Petrovic, S.A. Maloy, O. Unal, and M.M. Chadwick, "Dislocations, Twins, Grain Boundaries and Precipitates in MoSi2" Mater. Sci. and Engrg., A155, 241-249 (1992).
S.A. Maloy, A.H. Heuer, J.J. Lewandowski, and T.E. Mitchell, "On the Slip Systems in MoSi2", Acta Metall. Mater., 40(11), 3159-3165, (1992).
S.A. Maloy, S-Q Xiao, A.H. Heuer, and J. Garrett, "Precipitation of Mo5Si3 in MoSi2", J. Mater. Res., 8(5), 1079-1085, (1993).
N. Jacobson, K. Lee, S.A. Maloy, and A.H. Heuer, " Chemical Reactions in Processing of MoSi2 + Carbon Powders", J. Amer. Cer. Soc., 76(8), 2005-2009 (1993).
S.A. Maloy, T.E. Mitchell, JJ. Lewandowski, and A.H. Heuer, "{103}<331> Slip in MoSi2", Phil. Mag. Lett., 67(5), 313-321 (1993).
S.A. Maloy and T.E. Mitchell, "Dislocation Decomposition and Dissociation in MoSi2", EMSA Proceedings, (1993).
T.E. Mitchell and S.A. Maloy, "Plastic Anisotropy in MoSi2 Single Crystals", in Critical Issues in the Development of High Temperature Structural Materials, ed. by N.S. Stoloff, D.J. Duquette and A.F. Giamei, TMS, 279-290, (1993).
D.P. Butt, S.A. Maloy, H. Kung, D.A. Korzekwa, and J.J. Petrovic, "Creep Behavior of MoSi2-SiC Composites", Mat. Res. Soc. Symp. Proc., Vol. 322, 197-202 (1994).
S.A. Maloy, T.E. Mitchell, J.J. Petrovic, A.H. Heuer, and J.J. Lewandowski, "The Temperature and Strain Rate Dependence of the Flow Stress in MoSi2 Single Crystals", Mat. Res. Soc. Symp. Proc., Vol. 322, pp. 21-26, (1994).
T.E. Mitchell and S.A. Maloy, "Structure of Dislocations in MoSi2", ELECTRON MICROSCOPY 1994, VOLS 2A AND 2B : APPLICATIONS IN MATERIALS SCIENCES, p.89-90 (1994).
S.A. Maloy, T.E. Mitchell, and A.H. Heuer, "High Temperature Plastic Anisotropy in MoSi2 Single Crystals", Acta Metall. and Mater. Vol. 43, no. 2, pp. 657-688, (1994).
S.A. Maloy, G.T. Gray III, and R. Darolia, "High Strain Rate Deformation of NiAl", Mat. Sci. and Engrg., vol. A192/193, pp. 249-254 (1995).

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