The article discusses the peculiarities of the main stages of manufacturing material for the
cold bulk forming process to ensure the production of high-quality products. The basic …

The strain-based and stress-based workability diagrams are often used to predict the
initiation of ductile fracture in metal forming. The strain-based workability diagram is …

Upsetting is a typical test for determining the workability diagram. In most cases
axisymmetric samples are used for such tests. However, the shape of samples may have a …

This paper aims to develop a method for determining the workability diagram by varying
frictional conditions in the cylinder upsetting test. The method is based on a known …

Ductile fracture criteria are often used to predict fracture initiation in metal forming
processes. One of such criteria is based on the workability diagram and an average value of …

Material formability it is material ability to deform permanently in different stress condition
without structure damage. The fracture limit of material in bulk metal forming is based on …