Ab Initio Finite Element Coupled Investigation of the Effect of C on the Property of TRIP Steel

Abstract

Transformation induced plasticity steels (TRIP steel) is attracting more and more attention for the past decades for its special property of good combination of strength and plasticity. To enhance the strength, C is typical alloy element of TRIP steel, which plays an important role on the property of trip steel, not only on the macro property but on the micro structure. To investigate the effect of C on the property on TRIP steel, Ab initio calculation and finite element simulation multi-scale simulation framework was set up to discuss the effect of C on the property on TRIP steel. For ab initio and finite element the fundamental equation was introduced and transformation technology between ab inito and finite element by internal variable was considered. In conclusion, C was important reinforcement element of TRIP steel and ab inito finite element coupled simulation of TRIP steel was efficient in the investigation of the micro and macro property of TRIP steel.