... resulting from cold forming operations, the analytical model can reliably be used. In cold forming, usually low-carbon steels are used. Accordingly, the selected materials for extrusion were C40 and St37, which had the chemical composition as given in Table 2 . Billets were normalized before the cold...

...Phuc Nguyen-Duy; Serge Bayard The fracture-energy criterion J Ic was determined by the single specimen method on quenched and tempered 4130 steel used for tower anchor bars of high voltage transmission lines. A thermodynamic approach was used to rationalize J Ic as a stable crack initiation...