Abstract
Spheroidized 1020, 1045, and 1090 steel samples were cold-rolled to large plastic strains. This lead to cracking by alligatoring in 1090 steel. At strains smaller than required for alligatoring, voids were observed to be widely distributed in all three steels. The nucleation, growth, and coalescence of voids were characterized with quantitative metallography and density measurements. The process leading to alligatoring was analyzed as three sub-processes: the evolution of voids, the formation of an initial crack, and the damaged material finally fracturing. The influence of rolling parameters on void growth under this nominally compressive stress state was also discussed.
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Xu, L., Daehn, G.S. Alligatoring and damage in the cold rolling of spheroidized steels. Metall Mater Trans A 25, 589–598 (1994). https://doi.org/10.1007/BF02651600
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DOI: https://doi.org/10.1007/BF02651600