| 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 |
Pushing Forward the Limit of Transformation-induced Plasticity (TRIP) Effect: Nnew Strategies in Mechanically Metastable Alloy Design |
| Author(s) |
Shaolou Wei, Jaclyn Leigh Cann, Cem Tasan |
| On-Site Speaker (Planned) |
Shaolou Wei |
| Abstract Scope |
Decades of effort in high-strength alloy investigations has well documented the significant role of strain-induced martensitic transformation in mechanical performance advancement (namely, the transformation-induced plasticity effect, TRIP). Albeit TRIP-assisted alloys benefit from stress delocalization and thereby deformation homogenization resulting from the transformation, the resultant product, martensite, is yet problematic: its extensive defects density and hardenability discrepancy with the adjacent austenite can lead to local embrittlement and hence fracture. In this presentation, we aim to propose three new mechanistic strategies that can potentially overcome this dilemma: first, triggering a plastic strain-induced FCC-HCP-FCC sequential martensitic transformation pathway; second, mitigating blocky HCP-martensite formation via the nucleation of extensive stacking faults; and third, designing superelastic nano-precipitates that reduce martensite retention in cyclic loading conditions. More detailed discussion about the deformation micro-mechanisms and the resultant plastic strain accommodation characteristics will also be provided. |
| Proceedings Inclusion? |
Definite: At-meeting proceedings |