Abstract
Ni-20 wt pct Cr wires, as individual wires or within 3D woven structures, are alloyed with Mo, Al, and Ti by gas-phase surface deposition and volume interdiffusion. Mo deposition creates Mo-rich coating and Kirkendall pores. Al + Ti co-deposition creates uniform triple-layered coating. The resulting homogenized and aged Ni-(17.4-19.6)Cr-(1.6-1.8)Al-(2.5-3.6)Ti-(1.5-4.5)Mo(wt pct) wires exhibit γ + γ′ superalloy microstructure. This demonstrates the feasibility of fabricating 3D woven Ni-base structures via gas-phase alloying and heat treatments, into multi-element superalloys with solid-state bonding at wire contacts.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 2249-2254 |
| Number of pages | 6 |
| Journal | Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science |
| Volume | 46 |
| Issue number | 5 |
| DOIs | |
| State | Published - May 2015 |
Funding
Financial support from the Defense Advanced Research Projects Agency (DARPA) under award number W91CRB1010004 monitored by Dr. Judah Goldwasser is acknowledged. The authors also thank Dr. Dinc Erdeniz and Ms. Ashley Paz y Puente (both of Northwestern University) for useful discussions.
ASJC Scopus subject areas
- Condensed Matter Physics
- Mechanics of Materials
- Metals and Alloys