Plasticity maps atomic interactions: nitrogen-rich stainless steels

Important results from the project

** Denna text är maskinöversatt ** The traditional approaches to designing new alloys based on available parameters are not significant reductions in the expensive and extensive trial and error methods. Our theoretical-experimental strategy regarding mechanical properties of alloys is based on calculated internal material parameters, which then provide information about deformation processes and unambiguously map a number of phenomena. We presented and implemented the latest theoretical development together with engineers at Sandvik Materials Technology.

Expected long term effects

** Denna text är maskinöversatt ** Our objective was to identify and understand the mechanisms behind the plasticity of steels with a high nitrogen content and establish a robust design criterion based on material parameters. By studying a set of selected alloys using theoretical (quantum mechanical) and experimental tools, we explained the role of nitrogen and proposed the underlying mechanism behind the observed effect on deformation behavior.

Approach and implementation

** Denna text är maskinöversatt ** We have presented and implemented the latest theoretical developments for researchers and engineers at research and development units at Sandvik Materials Technology. The research focused on long-term issues related to plasticity. We used a quantum mechanical modeling-based strategy to understand, describe and design materials with high strength, high ductility and low cost. The project resulted in an improved knowledge of the factors that affect the plastic property of steel materials.