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| Rupture
is a mode of ductile fracture in which a 100% reduction in area occurs.
For a single crystal sample this process involves multiple slip and the
material will reduce to a line at the intersection of the active slip systems.
The diagram shows the process for a ductile polycrystalline sample. Stage
(i) is the initial elastic and plastic deformation of the material, (ii)
shows the formation of a neck in the sample and the localization of deformation
to the neck region, and (iii) shows the final reduction of the neck area
to zero in the rupture process.
Rupture is often involved with high temperature creep processes in which grain boundary sliding and recrystallization occur. |
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| From:
Courtney,
"Mechanical Behavior of Materials," McGraw Hill (1990) |
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