| About this Abstract |
| Meeting |
13th International Conference on the Technology of Plasticity (ICTP 2020)
|
| Symposium
|
13th International Conference on the Technology of Plasticity (ICTP 2020)
|
| Presentation Title |
Experimental Characterization of Plasticity Increment Induced by TRIP and Its Dependence on the Annealing Temperature in Lean Duplex Stainless Steel |
| Author(s) |
Lei Chen, Shuo Hao, Ruixue Mei, Qixiang Jia, Cheng Peng, Miao Jin |
| On-Site Speaker (Planned) |
Lei Chen |
| Abstract Scope |
The tensile deformation of a lean duplex stainless steel(LDX)annealed in the range of 1000-1200°C was carried out on Gleeble-3800®. The microstructural mechanism was characterized. Some quantitative indicators for characterizing the plastic increment of TRIP were proposed, including apparent increment (Δe), average increment (Δe′) induced by unit volume SIM and intrinsic increment (Δe*) related only to stability of austenite. The results show that SIM can develop in two ways of γ→ε→α′ and γ→α′ whereby the work hardening exhibit a “three-stage” characteristic. There is a critical deformation temperature (Md) where the TRIP is absent. The higher the annealing temperature is, the smaller the Md and the Δe are. As annealing temperature increases, Δe′ increases, while Δe* decreases, indicating a fact that the more stable the austenite is, the smaller the intrinsic plastic increment of TRIP is. In addition, both Δe′ and Δe* show a linear relationship with the austenite stability coefficient (k). |
| Proceedings Inclusion? |
Definite: At-meeting proceedings |