The recent application of nanotechnology to structural materials is a promising way to produce new strong materials that exceed current limitations. Grain-size refinement is considered as one of the most effective strengthening methods of materials. At the same time, the addition of carbon nanotubes (CNTs) in a material is known to be more effective than conventional reinforcements. Here, CNT/C...

Abstract. Ultrafine-grained S322750 superduplex stainless steel has been obtained through high-pressure torsion (HPT) process. Microstructural evolution after the severe plastic deformation (SPD) shown no phase transformation. Isothermal heat treatment was applied process in order to promote secondary precipitation. Precipitation enhanced ultrafine-grained comparison coarse-grained at same isot...

recent developments in nanostructured products draw considerable attention to ultrafine grained materials. these materials are normally manufactured by different severe plastic deformation (spd) methods. in the present study, analytical models and finite element method (fem) are used to calculate strain imposed to a specimen that was deformed by equal channel angular pressing (ecap). in additio...

Metastable austenitic stainless steel was investigated during fatigue tests under strain control with either constant total or plastic amplitude. Two different material conditions coarse-grained and ultrafine-grained microstructure were in focus. The influence of the test on both martensitic phase transformation as well lives is discussed. In addition, an approach for calculating Coffin–Manson–...

Recent developments in nanostructured products draw considerable attention to ultrafine grained materials. These materials are normally manufactured by different severe plastic deformation (SPD) methods. In the present study, analytical models and finite element method (FEM) are used to calculate strain imposed to a specimen that was deformed by equal channel angular pressing (ECAP). In additio...