| About this Abstract |
| Meeting |
MS&T21: Materials Science & Technology
|
| Symposium
|
Multi Scale Modeling of Microstructure Deformation in Material Processing
|
| Presentation Title |
Using Martensite Crystallography to Determine Transformation: Induced Deformation of Ferrite In Dual-phase Steels |
| Author(s) |
Vibhor Atreya, Cornelis Bos, Maria Jesus Santofimia |
| On-Site Speaker (Planned) |
Vibhor Atreya |
| Abstract Scope |
During the production of ferrite-martensite dual-phase (DP) steels, the transformation of austenite into martensite involves a volumetric expansion and a shape change which the ferrite phase present in the microstructure accommodates through deformation. A description of ferrite deformation and the resulting local distribution of strain and stress is necessary to accurately model the subsequent mechanical behavior of DP steels. In this work, ferrite deformation is simulated by first obtaining the invariant plane strain associated with the martensitic phase transformation using the phenomenological theory of martensite crystallography. Subsequently, micromechanical modeling is used to simulate the transformation-induced ferrite deformation. The simulation results are compared to the deformation in the ferrite phase observed experimentally via electron backscatter diffraction measurements. The methodology presented in this work can be used to estimate the strain and stress resulting from martensitic transformation-induced deformation of the ferrite phase in DP steels. |