| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Refractory Metals 2020
|
| Presentation Title |
Hot Isostatic Pressing of WC-3009 Niobium-Based Refractory Alloy |
| Author(s) |
Calvin V. Mikler, Benjamin Georgin, Brian Welk, Gopal Viswanathan, Kevin Chaput, Hamish Fraser |
| On-Site Speaker (Planned) |
Calvin V. Mikler |
| Abstract Scope |
Niobium-based WC-3009 (Nb-30Hf-9W wt%) is a single-phase bcc refractory alloy designed as a candidate replacement for the still commonly utilized C-103 (Nb-10Hf-1Ti wt%) alloy. While WC-3009 exhibits superior high-temperature mechanical properties compared with C-103, fabrication is economically prohibitive, and the alloy was not employed in any capacity. In this study, aliquots of pre-alloyed hydride-dehydride WC-3009 powder were canned and subsequently consolidated via hot isostatic pressing (HIP). This effort was performed to identify key alloy attributes that drive processability through HIP such that higher strength Nb-based refractory alloys can be utilized. Backscattered electron (BSE) imaging and electron backscattered diffraction (EBSD) analysis revealed the degree of recrystallization and recovery substructure formation. Transmission electron microscopy (TEM) coupled with x-ray energy dispersive spectroscopy (XEDS) were employed to analyze second phase precipitation behavior and dislocation substructures. The results indicated that hot isostatic pressing is a viable method of processing high performance Nb-based refractory alloys. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |