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Forming is the process in which deformation of the material takes place in a requisite die cavity without any failure. During this, bi-directional stretching and compression of the material takes place which results in defects necking, cracking and wrinkling. The challenges are different when same process is carried out at micro level with thin sheets below 100 microns. It has become imperative for many engineering fields to manufacture micro-sized components, due to growing miniaturization. It is also observed that the mechanical behavior of thin sheets differs greatly at the micro-level. Forming limit curve (FLC) is one way by which the formality of material can be assessed. The FLC can be plotted using three approaches—experimentally, empirically, and numerically. In this research, FLC is plotted experimentally for an ultra-thin Titanium sheet of 50 µm. A newly designed tool with hemispherical punch of 4 mm diameter was used for experimentation according to ASTM-2218-14 standard using samples of Uni-Axial, Intermediate Uni-Axial, Bi-Axial, Intermediate Bi-Axial, and Plane Strain paths to obtain limit strains. The objective of this research is to plot FLC with microstructural study to assess the behavior of Titanium Grade-II (TiG-II). For Numerical simulation M–K model was applied. The Numerical results and experimental results achieved are in good agreement. Micro structural study reveals phase identification and grain size assessment.

About the journal
JournalData powered by TypesetInternational Journal on Interactive Design and Manufacturing (IJIDeM)
PublisherData powered by Typesetspringer
Open AccessNo