Abstract
In this paper the effects of titanium addition in an amount up to 0.13
wt.% have been investigated to determine their effect on the
microstructure and mechanical properties of Thin Wall Vermicular Graphite Iron
Castings (TWVGI). The study was performed for thinwalled iron castings
with 3-5 mm wall thickness and for the reference casting with 13 mm.
Microstructural changes were evaluated by analyzing quantitative data sets
obtained by image analyzer and also using scanning electron microscope
(SEM). Metallographic examinations show that in thin-walled castings there
is a significant impact of titanium addition to vermicular graphite
formation. Thinwalled castings with vermicular graphite have a homogeneous
structure, free of chills, and good mechanical properties. It may
predispose them as a potential use as substitutes for aluminum alloy
castings in diverse applications.
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