| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Heterostructured and Gradient Materials (HGM VI): Principle, Processing and Properties
|
| Presentation Title |
Gradient Structure Guided Optimal Deformation and Stress Partition in Engineering Steels |
| Author(s) |
Yujie Wei |
| On-Site Speaker (Planned) |
Yujie Wei |
| Abstract Scope |
The outmost surface of engineering materials typically faces the most severe risk of damage. When such boundary conditions are given, employment of graded structures is desired to enhance the reliability of the structure in an economic way. In this discussion, we present some experimental observation and simulation results on how gradient twins and gradient phases change the deformation and stress partition in TWIP steels and stainless steel. In TWIP steel, it is found that the switch of twin or phase transformation systems at the grain level during different deformation stages and the subsequent formation of hierarchical microstructures are responsible for the strengthening and toughening of the material. For stainless steel deforming at different temperature, our investigation show that a set of cylindrical steel samples acquire a graded mixture of hard martensitic and soft austenitic phases through pre-torsion at low temperature. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Mechanical Properties, Iron and Steel, |