Research
Interests:
Dr. David heads the Materials Joining Group.
The groups projects range from the fundamental aspects of welding
and NDT, including modeling of processes, process-microstructure-properties
relationships to applied technologies. His current research activities
include solidification behavior of welds, welding of intermetallic alloys,
phase stability, process modeling residual stresses in weldments and friction stir welding.
He has contributed to over 300 papers in these fields and has organized
and edited several international conferences and conference proceedings,
respectively. He is the Editor-in-Chief of the international journal
"Science and Technology of Welding and Joining" published
by the Institute of Materials London. He is an Adjunct Professor at
the Colorado School of Mines and the University of Pittsburgh.
Education:
- 1972
Ph.D., Metallurgical Engineering, University of Pittsburgh
- 1967
M.S., Metallurgical Engineering, Indian Institute of Science
- 1968
B.S., Metallurgical Engineering, Indian Institute of Science
- 1963
B.S., Science, Mysore University, India
Professional
Experience:
- 1992
- Present Corporate Fellow and Group Leader, Materials Joining Group
- 1983
- Present Leader, Materials Joining and Nondestructive Group, Metals
& Ceramics Division, Oak Ridge National Laboratory
- 1977
- 1983 Research Staff member, Materials Joining and Nondestructive
Group, Metals & Ceramics Division, Oak Ridge National Laboratory
- 1977
- Research Associate Professor, University of Pittsburgh
Awards
and Honors:
- 2001
Fellow, The Minerals, Metals, and Materials Society (TMS)
- 1998
Distinguished Alumnus, University of Pittsburgh
- 1998
Warren F. Savage Award, American Welding Society
- 1999
"Elegant Work Prize," Institute of Materials, London
- 1996
Editor-in-Chief, "Science and Technology of Welding and Joining"
international journal
- 1996
William Irrgang Memorial Award, American Welding Society
- 1994
Fellow, American Welding Society
- 1994
Champion H. Mathewson Award, Minerals, Metals, and Materials Society
- 1993
Fellow, American Association for the Advancement of Science
- 1993
Comfort A. Adams Lecturer, American Welding Society Annual Meeting,
Houston, Texas
- 1993
Charles H. Jennings Memorial Award, American Welding Society
- 1992
Martin Marietta Energy Systems Corporate Fellow
- 1992
Honorary Membership Award, American Welding Society
- 1990
Charles H. Jennings Memorial Award, American Welding Society
- 1990
Jacquet-Lucas Award, International Metallographic Society and ASM
International
Major
Professional Activities:
- Member,
R&D Committee, American Welding Society
- U.S.
Delegate to the International Institute of Welding
- Member,
Solidification Committee, The Minerals, Metals, and Materials Society
Selected
Publications:
- J. M.
Vitek, S. A. David, D. J. Alexander, J. R. Keiser, and R. K. Nanstad,
"Low Temperature Aging Behavior of Type 308 Stainless Steel Weld
Metal," Acta. Metall. Mater., Vol 39(4), 503-16 (1991).
- S. A.
David and T. DebRoy, "Current Issues and Problems in Welding
Science," Science, 257, 497-502 (July 1992).
- T. DebRoy
and S. A. David, "Physical Processes in Fusion Welding,"
Reviews of Modern Physics., 67(1), 85 (1995).
- S. S.
Babu, S. A. David, J. M. Vitek, K. Mundra, and T. DebRoy, "Development
of Macro-Microstructures of Low Alloy Steel Welds-Inclusion Formation,"
Materials Science Technology, 11, 186 (1995).
- J. M.
Vitek, S. A. Vitek, and S. A. David, "Numerical Modeling of Diffusion-Controlled
Phase Transformations in Ternary Systems and Application to the Ferrite/Austenite
Transformation in Fe-Cr-Ni System," Metallurgical and Materials
Transactions A, 26, 2007 (1995).
- S. S.
Babu, S. A. David, J. M. Vitek, and M. K. Miller, "Phase Stability
and Atom Probe Field Ion Microscopy of Type 308 CRE Stainless Steel
Weld Metal," Metallurgical and Materials Transactions A. 27A,
763-74 (1996).
- S. A.
David, J. M. Vitek, S. S. Babu, L. A. Boatner, and R. W. Reed, "Welding
of Nickel-base Superalloy Single Crystals," Sci. & Techno.
of Welding and Joining, 2, 79, 1997.
- J. M.
Vitek, S. A. David, and L. A. Boatner, "Microstructural Development
in Single Crystal Nickel-base Superalloy Welds," Sci. & Techno.
of Welding and Joining, 2, 109, 1997.
- S. A.
David and S. S. Babu, "Modeling Microstructure Development in
Weld Metals," Trans. of the Indian Inst. of Metals, 50, 591,
1998.
- S. S.
Babu, S. A. David, J. A. Vitek, and M. K. Miller, "High Resolution
Analysis of Elemental Partitioning in Nickel-base Superalloy Welds
using Atom Probe Field Ion Microscopy," Microscopy and Microanalysis,
4, 94, 1998.
- J. M.
Vitek, Y. S. Iskander, E. M. Oblow, S. S. Babu, and S. A. David, "Neural
Net Model for Predicting Ferrite Number in Austenitic Stainless Steel
Welds," accepted for publication in the Proc. Intl. Conf. on
Trends in Welding Research, Pine Mountain, Georgia, 1-5 June 1998.
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