Magnesium (Mg) and its composites have been widely used in different fields, but the mechanical properties deformation mechanisms of polycrystalline Mg (polyMg) at atomic scale are poorly understood. In this paper, effects grain size, temperature, strain rate on tensile polyMg explored discussed by Molecular dynamics (MD) simulation method. The calculated results showed that there exists a crit...

The flow stress of Hadfield steel is attributed to lattice friction, dynamic strain aging (DSA), mechanical twinning, and forest hardening. However, it has not been clarified yet which mechanism quantitatively contributes most the work Here, an austenitic containing 1.1 wt.% C 12.5 Mn was studied, tensile tests at a rate 1 s−1 were performed neglect DSA effect. friction estimated by Hall–Petch ...

Purpose of the work is related with impossibility correctly estimating strain hardening metals (alloys) in area their large total deformations due to absence additivity traditionally used value engineering g, its nonlinear change values, and data technical literature Hall-Petch coefficient Ai for logarithmic true deformations, which led task correct transition from values 0 < g 50...60 % str...