| About this Abstract |
| Meeting |
13th International Conference on the Technology of Plasticity (ICTP 2021)
|
| Symposium
|
13th International Conference on the Technology of Plasticity (ICTP 2021)
|
| Presentation Title |
Grain Size Effect on the Ductile Fracture of Steel in Hot Deformation |
| Author(s) |
Zhenshan Cui, Xiaoqing Shang, Haiming Zhang, Yangqi Li |
| On-Site Speaker (Planned) |
Zhenshan Cui |
| Abstract Scope |
Grain size undoubtedly has strong influence to the microscopic deformation inhomogeneity of steel, leading to a different fracture behavior. However, the grain size effect on the ductile fracture was not deeply investigated in the literature. Taking the 316LN stainless steel as an investigated material, this presentation will introduce our research work in the fracture behavior and criterion by considering the inhomogeneity of microscopic deformation caused by the difference of grain size and orientations. The investigation showed that the void evolution in matrix with large and small grain size has different influence to the fracture behavior of the steel. The voids growth model was established by considering the grain size effect. In hot deformation process, the dynamic recrystallization yields fine grains and releases the stress concentration resulted from dislocation pile-up. A fracture criterion was proposed to predict the ductile fracture of the steel undergoing hot deformation. |
| Proceedings Inclusion? |
Definite: At-meeting proceedings |