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The influence of texture on strain hardening [electronic resource].

Published
Los Alamos, N.M. : Los Alamos National Laboratory, 1988.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Physical Description
Pages: 11 : digital, PDF file
Additional Creators
Los Alamos National Laboratory and United States. Department of Energy. Office of Scientific and Technical Information
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Summary
It is well known that the strain hardening behavior of metals is not the same in tension, compression, torsion and rolling, for example. We report on a new set of experiments, comprising wire-drawing interrupted by tensile tests, free compression, channel-die compression, and short-tube torsion in aluminum, an Al-Mg alloy, copper, silver, and 70:30 brass. The texture was measured before straining and at vonMises strain levels of roughly 1.0 and 2.0. Computer simulations of the deformation starting from a set of random grains weighted by observed initial texture, predicted deformation textures in qualitative agreement with the observed ones in most cases. Quantitatively the simulations yielded the Taylor factors as a function of strain for all paths and, with an assumed hardening law for the representative grain, the macroscopic stress/strain curves. The grain hardening rate as a function of resolved shear stress was described in tabular form such as to match one of the macroscopic curves, and then used to predict the others. The eventual fit was quite good; we will describe what judgments needed to be made to achieve this result. The conclusion is that the strain-path dependence of work hardening can be explained simply as a consequence of texture development. 13 refs., 5 figs., 1 tab.
Report Numbers
E 1.99:la-ur-88-1168
E 1.99: conf-880844-2
conf-880844-2
la-ur-88-1168
Subject(s)
Other Subject(s)
Note
Published through SciTech Connect.
01/01/1988.
"la-ur-88-1168"
" conf-880844-2"
"DE88009157"
8. international conference on strength of metals and alloys, Tampere, Finland, 22 Aug 1988.
Kocks, U.F.; Rollett, A.D.; Stout, M.G.
Funding Information
W-7405-ENG-36
View MARC record | catkey: 14459960