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P R O C E S S E S | J U L Y / A U G U S T
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MS&T LECTURERS ANNOUNCED
MS&T 2015 Lecturers
Announced
Continuing the grand tradition of ASM International
events, three distinguished lecturers will speak at the 2015
Material Science & Technology Conference and Exhibition
(MS&T15) to be held October 4-8 at the Greater Columbus
Convention Center in Columbus, Ohio. MS&T brings togeth-
er the strengths of four major materials organizations: ASM
International, The American Ceramic Society (ACerS), The
Association for Iron & Steel Technology (AIST), and The Min-
erals, Metals & Materials Society (TMS).
2015 Alpha Sigma Mu
Monday, October 5
Dr. Siegfried Hecker, FASM
Research Professor, Department of Management
Science & Engineering
Senior Fellow, Center for International Security
and Cooperation, Stanford University
“Metallurgy and Nuclear Diplomacy”
When I began my metallur-
gy career 50 years ago at Case
Institute of Technology focused
on steels, I never imagined that I
would wind up studying the met-
allurgy of exotic elements such as
plutonium. As it turned out, steel
metallurgy and the iron-carbon
phase diagramwere good training
grounds for my research on pluto-
nium, which is unquestionably the most complex element
in the periodic table. Plutonium also has profound interna-
tional security implications because it is the heart of nucle-
ar bombs. During the past 25 years, I have been involved in
international security assessments and diplomacy in which
plutonium metallurgy played a central role. I will describe
some of my adventures at the intersection of plutonium
metallurgy and nuclear diplomacy in Russia, China, North
Korea, India, Pakistan, Iran, Kazakhstan, the UK, and France.
2015 ASM/TMS Distinguished Lectureship
in Materials and Society
Tuesday, October 6
Dr. Vincent J. Russo, FASM
Executive Director, Aeronautical Systems Center,
Wright-Patterson AFB (retired)
“What is a Splendid Leader?”
The desirability for leaders of major organizations to
possess an engineering education seems to be growing dai-
ly. But unfortunately, the vast majority of engineers are sel-
dom trained to be effective leaders. This talk is structured
to help engineers understand a leadership framework that
can be applied to every level of
an organization. The framework
is identified in the following four
pillars: Behavior Realities; Lead-
ership Tenets; Essence of Lead-
ers; and Life Balance. The talk will
explain the four pillars and offer
tools for use by potential and cur-
rent leaders. Leadership can be
learned. It just takes dedication,
study, and hard work. A full treat-
ment of leading technical organizations can be found in the
book,
The Splendid Leader
.
2015 Edward DeMille Campbell
Memorial Lecture
Tuesday, October 5
Prof. David N. Seidman, FASM
Walter P. Murphy Professor, Department of Materials Science
and Engineering, Northwestern University
“A Correlative Five Dimensional Study of Phase Separation
at the Subnano to Nanoscale of Nickel AluminumAlloys”
Prof. Seidman will discuss
the temporal evolution of ordered
gamma-prime (L1
2
)-precipitates in
a disordered gamma (fcc)-matrix
studied for Ni-12.5 Al and Ni-13.4
Al at%alloys aged at 773, 798, 823,
or 873 K for times ranging from
0.08 to 10,287 h, in a comprehen-
sive study utilizing 3D atom-probe
tomography (3D APT), transmission electron microscopy
(TEM), and monovacancy-mediated lattice-kinetic Monte
Carlo (LKMC
1
) simulations. The 3D APT results are compared
in detail to LKMC
1
simulations, which include monovacan-
cy-solute binding energies through fourth-nearest-neighbor
distances, for the same mean compositions and aging tem-
peratures. The temporal evolution of the measured values of
the mean radius, number density, aluminum supersatura-
tion, and volume fraction of the gamma-prime-precipitates
are compared to the predictions of a modified version of the
Lifshitz-Slyozov-Wagner coarsening model due to Calderon,
et al., which takes into account the thermodynamics of the
gamma-matrix. The resulting experimental rate constants
are used to calculate the Gibbs interfacial free-energies be-
tween the gamma- and gamma-prime-phases using data
from two thermodynamic databases. The diffusion coeffi-
cient for coarsening is then calculated from the same rate
constants and is compared to all extant archival diffusivities
and is demonstrated to be the interdiffusivity of Ni and Al at
the four aging temperatures. The monovacancy-mediated
LKMC
1
simulation results are found to be in good agreement
with 3D APT data for all the quantities determined by 3D APT.
Russo