| 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 |
Hardening/Softening Characteristics of a TRIP-assisted Duplex Stainless Steel under Cyclic Deformation |
| Author(s) |
Miao Jin, Lei Chen, Zongyuan Zou, Shuo Hao, Hongzhong Wang, Qun Li, Shiyan Zhao |
| On-Site Speaker (Planned) |
Zongyuan Zou |
| Abstract Scope |
Recently, a series of economical duplex stainless steel (DSS) with transformation induced plasticity(TRIP) effect which improves the mechanical properties have been developed by replacing Ni-Mo with Mn-N. The mechanical properties of the above TRIP-assisted DSS under cyclic loading condition were studied and the microstructural mechanism was characterized by TEM. The results show that it's cyclic hardening/softening characteristics are sensitive to strain amplitude and the number of cycles(N). With a relatively small strain amplitude, cyclic hardening occurs firstly (N < 5), then cyclic softening starts and trends to stabilization gradually. With a relatively large strain amplitude, after a rapidly cyclic hardening (N<5), it is softening continuously until failure. The dislocation walls formed in ferrite during cyclic deformation which are responsible for the overall cyclic softening; While austenite undergoes cyclic induced ε martensite transformation at relatively large strain amplitude whereby the cyclic softening is suppressed. |
| Proceedings Inclusion? |
Definite: At-meeting proceedings |