Abstract
The processes of nucleation and growth of voids and formation of ductile cracks in tensile tests were investigated on plain and notched specimens of 7:3 brass. The main results obtained are as follows.(1) Voids appeared at nearly the ultimate tensile stress. The locations of void formations were grain boundaries or the inside of grain.(2) A crack was produced by the coalesence of the secondary micro-voids appearing in the highly deformed region (slip band) emanating from the initial void. The propagation of the crack proceeded by the similar process.(3) In cup and cone fracture, the mechanisms of fracture in cup- and cone-parts were nearly the same.
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