From Nanoscale to Macroscale: Study of Damage in Steels With Cu Precipitates Using Micromechanically Based Stress-Strain curves

摘要

In the present study, strengthening of steels due to Cu precipitates in the nanometer regime is investigated. They lead to a significant increase of the matrix yield stress due to impeded dislocation movement. This effect can be treated quantitatively on the mesomechanical level of dislocation theory. The impact on the macroscopic failure behaviour of ferritic steel is investigated in the framework of damage theory. The presented strategy can be also applied to related materials science problems.