A. Korbel et W. Bochniak, THE STRUCTURE-BASED DESIGN OF METAL-FORMING OPERATIONS, Journal of materials processing technology, 53(1-2), 1995, pp. 229-237
The work summarizes the recent experimental studies and theoretical co
nsiderations on the nature of plastic deformation in metallic material
s. Specifically, it concentrates upon the rules which the heterogeneou
s deformation obeys and which differ radically from those of the homog
eneous deformation. Formulation of such rules is based upon the experi
ments which provide the very fundamental information about the criteri
on of slip in crystalline materials, choice and sequence of operation
of slip systems and conditions under which ''crystallographically dete
rmined'' slip may be replaced by transgranular shear. The correlation
of this form of slip with metal structure and global mechanical proper
ties is given. The results of the studies allow to predict the onset o
f heterogeneous mode of deformation and what is even more important, t
hey show the means due to which the mode of deformation may have taken
under control. The very practical aspect of the work consists itself
in the concept ''of the structure based design'' of metal forming oper
ation. It is shown, that the scheme and sequence of straining in a par
ticular forming operation appears extremely important from the point o
f view of the energy consumption of the process and the final structur
e of the metal. The examples of ''energy saving'' metal forming operat
ions, designed according to the concept, are presented.