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GILBERT Y. CHIN
1 934-1 991
BY JACK H. WERNICK
.
GILBERT CHIN, a physical metallurgist by formal training,
made significant contributions to our understanding and appli-
cations of crystal plasticity and to the development of new
magnetic alloys for telecommunications. lust prior to his death,
he was a leader of a productive group doing significant research
and development in the areas of optical fibers, electronic ceram-
ics, and materials for high-temperature superconductivity. He
died on May 5, 1991, at the age of fifty-six.
Gilbert was elected to the National Academy of Engineering
In 1982. At the time of his death, he was director of the Passive
Components Research Laboratory at AT&T Bell Laboratories,
Murray Hill, New Jersey.
Born in Kwangtung, China, on September 21, 1934, Gilbert
received his B.S. and Sc.D. degrees in metallurgy from the
Massachusetts Institute of Technology in 1959 and 1963, respec-
tively. He joined the AT&T Bell Laboratories research area in
1962. Among his contributions to metallurgy and materials
science, two major contributions stand out; they are in the areas
of crystal plasticity and magnetic alloys, which he had coupled
with creativity and leadership. In earlier work, he combined the
Taylor theory of plastic flow and the Chikazumi theory of
directional order to predict the deformation-induced magnetic
anistropy of nickel-iron alloys. This basic understanding led
Chin and his colleagues to develop a manufacturing process for
19
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20
MEMORIAL TRIBUTES
optimizing the magnetic properties of nickel-iron wires for use
in a magnetic memory that became the heart of the nation's first
telephone electronic switching system.
Gilbert also pushed forward the frontier of crystal plasticity
research by teaming with a colleague mathematician to become
the first to use linear programming to solve the Taylor analysis of
polycrystalline flow. He also extended the Taylor theory of slip
to include twinning, which work Sir G. I. Taylor communicated
to the Royal Society. This program continuccI with more than
thirty papers, culminating in a series cleating with the plastic
behavior of ionic solids, which won him the prestigious Cham-
pion H. Mathewson Gold Medal of the American Institute of
Mining, Metallurgical, and Petroleum Engineers as the most
significant contribution to metallurgical science during a three-
year period. He also used his understanding of crystal plasticity
to develop a novel processing technique for achieving the
highest combination of strength and ductility in several copper-
based alloys.
Chin's second contribution was the development with his
colleagues of a new family of low-cobalt chromium-cobalt-iron
ductile permanent magnet alloys, which can be formed at room
temperature, along with the successful transfer of this new
technology to production of one of these alloys for use in
telephone receivers at an annual cost savings of several million
clollars.
Gilbert was the hoIcler of eleven patents and author or coau-
thor of more than 140 publications. Arnonghis many awards and
honors he was elected a fellow of the Metallurgical Society of
AIME, class of 1981, the total number limited to one hundred
living members. He was also elected a fellow of the American
Society for Metals (ASM) in 1983 and was ASM's Sauver Memo-
rial Lecturer for 1985. He was frequently sought after to organize
symposia and to chair important materials science committees.
His service on national committees incluclecI work for the
National Research Council, as well as the University Materials
Council and the National Science Foundation. For the National
Research Council, he served from 1980 to 1982 on the Commit-
tee on Materials Substitution Methodology, National Materials
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GILBERT Y. CHIN
21
Advisory Board; in 1984-1985 on the Committee on New Mag-
netic Materials, National MaterialsAdvisoryBoard; and in 1985-
1987 on the Committee on Army Basic Scientific Research,
Board on Physics and Astronomy. From 1986 to 1989 he served
on the Panel on Education in Materials Science and Engineer-
ing, ajoint activity of the National Materials Advisory Board and
the Board on Physics and Astronomy. In addition, from 1986 to
1988 he served on the Policy Committee of the University
Materials Council, and from 1986 to 1989 he served on the
Materials Research Advisory Committee of the National Science
Foundation.
Gilbert's devotion as a son, husband, and father is equally as
significant as his contributions to science and technology. He
made sure that his family (as well as his younger brothers and
sister) became highly educated.
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