Anisotropy of mechanical properties in rolled zinc
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Zinc sheets rolled in one direction develop the same anisotropy as those cross-rolled, as long as rolling in one direction reaches a total reduction of 70% or more.
To obtain a minimum anisotropy, hot rolling must be conducted at 150–200°C while cold rolling, with the heaviest possible drafts, preferably in heated rolls.
It is undesirable to anneal cold-rolled zinc above 100°C since a decrease of anisotropy is accompanied by a rapid fall of the mechanical properties.
In cold rolling with tension, the mechanical anisotropy decreases. Zinc strip rolled in coils with tension shows less anisotropy than strip rolled singly.
KeywordsZinc Mechanical Property Anisotropy Cold Rolling Total Reduction
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