About this Abstract |
| Meeting |
MS&T24: Materials Science & Technology
|
| Symposium
|
Additive Manufacturing: Design, Materials, Manufacturing, Challenges and Applications
|
| Presentation Title |
Demonstration of a New Hot Cracking Criterion to Design a Compositional Path to Join 316L Stainless Steel and Monel400 |
| Author(s) |
Zhening Yang, Alexander Richter, Hui Sun, Zi-Kui Liu, Allison M Beese |
| On-Site Speaker (Planned) |
Zhening Yang |
| Abstract Scope |
While joining Fe-alloys and Cu-containing alloys is attractive for achieving components with high strength and corrosion resistance, Cu microsegregation during the direct liquid-phase joining of these alloys results in hot cracking. To reduce the crack susceptibility, one approach is to design functionally graded materials (FGMs) with compositions in the gradient region designed to reduce Cu microsegregation, for example, by tuning the Ni concentration. In this study, a criterion based on a hybrid Scheil-equilibrium approach was created to determine how much Cu microsegregation in the SS316L-Ni-Monel400 three-component system results in hot cracking. Monolithic multi-layer samples in SS316L-Ni-Monel400 system and an FGM from SS316L to 55wt%/45wt% SS316L/Ni to Monel400 were fabricated to validate the new hot cracking criterion. The new hot cracking criterion is expected to predict hot cracking due to Cu microsegregation when joining other Fe-alloys and Cu-containing alloys. |