Corrosion Embrittlement of Duralumin III: Effect of the Previous Treatment of Sheet Material on the Susceptibility to This Type of Corrosion Page: 2 of 31
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3 1176 01433 5401
NATIONAL ADVISORY COMMITTEE "FOR AERONAUTICS.
TECHNICAL 'OTE 'N0. 284.
CORROSION EMBRITTLEMENT OF DURALUMIN.
III. -EFFECT OF THE PREVIOUS TREATMENT OF SHEET MATERIAL
ON THE SUSCEPTIBILITY.TO THIS TYPE OF CO00RROSION.
By Henry S. Rawdon.
Light aluminum alloys of the duralumin type, that is, high-
strength wrought alloys whose properties can be improved decid-
edly by heat treatment are of very great importance, especially
in the form of sheet and tubes, for aircraft construction. The
permanence of. such materials when exposed to corrosive condi-
tions such as. may obtain in aircraft service should be known,
however, with a high degree of certainty and precautionary meas-
ures taken to guard against any possible serious deterioration
in service. To obtain reliaole information along this line an
investigation, the results of which form the basis of this series
of reports (Reference i), has been carried out at the Bureau of
Standards in cooperation with the National Advisory Committee
for Aeronautics, Bureau of Aeronautics of the Navy Department,
and Army Air Corps. The leading manufacturers have also partic-
ipated in the investigation by furnishing practically all of the
materials needed, The investigation, which was started in the
latter part of 1925, is still in progress and final and complete
answer s have not been reached on all points concerning the perma-
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Rawdon, Henry S. Corrosion Embrittlement of Duralumin III: Effect of the Previous Treatment of Sheet Material on the Susceptibility to This Type of Corrosion, report, April 1928; (https://digital.library.unt.edu/ark:/67531/metadc53993/m1/2/: accessed April 24, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.