| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing: Length-Scale Phenomena in Mechanical Response
|
| Presentation Title |
Analytic Model for the Softening Factor within Stages of Work Hardening |
| Author(s) |
Alan F. Jankowski |
| On-Site Speaker (Planned) |
Alan F. Jankowski |
| Abstract Scope |
A formulation for a dimensionless coefficient has been derived that represents a microstructural scale of alloys which follow Kocks-Mecking (K-M) work hardening behavior as determined using the Considère criterion from the true plastic strain between the proportional limit and the strength at the instability. Further development is now made in formulating the softening factor coefficient for the individual and sequential stages 3 and 4 of plastic deformation in K-M work hardening behavior. Application is shown for tensile test results of Ti-6Al-4V made by different additively manufactured processes. It is found that the variation in plastic strain as a function of the coefficient produces a continuous curve representative of the alloy system. This model and the details presented for stages 3 and 4 enables the evaluation of other material parameters including the determination of the activation volume for the onset of plastic deformation. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Titanium, Other, |