About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Refractory Metals 2026 – A Memorial to Todd Leonhardt
|
| Presentation Title |
Hot Isostatic Pressing and High-Temperature Behavior of Additively Manufactured W-Re Alloys |
| Author(s) |
Eliott Wallace, Alex Lark, Gianna Valentino |
| On-Site Speaker (Planned) |
Eliott Wallace |
| Abstract Scope |
Tungsten-rhenium (W-Re) alloys are promising candidates for high-temperature structural applications due to their enhanced high-temperature strength and reduced brittleness compared to pure tungsten. However, their high melt temperatures make them susceptible to cracking and porosity during additive manufacturing, posing challenges for structural integrity. In this study, we examine the effects of hot isostatic pressing (HIP) on microstructural evolution and densification in laser powder bed fusion W-7Re and W-25Re alloys. A systematic HIP study was conducted to optimize soak time and temperature, minimizing grain growth and intergranular cracking while achieving full densification. High-temperature tensile testing has been extended to 2000ºC to evaluate thermomechanical performance, with ongoing efforts to integrate digital image correlation for in situ strain mapping under extreme thermal conditions. Post-mortem electron microscopy is used to characterize changes in grain morphology and fracture behavior, providing insight into active deformation mechanisms at elevated temperatures. |
| Proceedings Inclusion? |
Undecided |
| Keywords |
High-Temperature Materials, Solidification, Additive Manufacturing |