| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
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| Symposium
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Additive Manufacturing: Length-Scale Phenomena in Mechanical Response
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| Presentation Title |
High-Throughput Nanomechanical Evaluation of Fe-Ni-Cr Alloys at Cryogenic Temperatures |
| Author(s) |
Samantha Manness, Jeff Wheeler, Joerg Loeffler, David C. Dunand |
| On-Site Speaker (Planned) |
David C. Dunand |
| Abstract Scope |
Steels have low-temperature and cryogenic applications scenarios for liquid nitrogen, helium, ammonia, and methane storage, chemical distillation, and space structural components. However, the types of steels used in these applications consist of a limited subset of well-known stainless steels containing 8-12 wt% nickel and 17-19 wt% chromium. Thus, the breadth of the wider Fe-Ni-Cr ternary system’s performance under cryogenic conditions remains largely unassessed.
In this work, Fe/Fe-50Ni/Fe-30Cr diffusion multiples are fabricated via laser powder-bed fusion and used for high-throughput alloy discovery via correlated mechanical microscopy. High-speed nanoindentation mapping (HSNM) is used across a broad range of Fe-Ni-Cr compositions at various cryogenic temperatures to characterize local mechanical behavior for a large number of Fe-Ni-Cr compositions. Linking HSNM data to energy-dispersive spectroscopy performed at indentation sites allows for effective creation of mechanical-composition maps, informing specific alloy performance at cryogenic conditions within the Fe-Ni-Cr system. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Iron and Steel, Mechanical Properties |