Abstract
The successful joining of oxide dispersion-strengthened (ODS) alloy PM2000 rods by pulsed plasma-assisted diffusion bonding is reported. During secondary recrystallization after joining, the alloy grains grew across the original interface, which was then marked by a row of remnant alumina particles. These did not appear to act as pinning sites for the alloy grain boundaries, which moved easily past them, leaving a strong diffusion bond.
| Original language | English |
|---|---|
| Pages (from-to) | 1663-1665 |
| Number of pages | 3 |
| Journal | Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science |
| Volume | 38 A |
| Issue number | 7 |
| DOIs | |
| State | Published - Jul 2007 |
| Externally published | Yes |
Funding
This work was carried out during GJT’s sabbatical appointment funded by the United States Department of Energy’s Higher Education Research Experiences Program at the Oak Ridge National Laboratory (ORNL), administered by the Oak Ridge Institute for Science and Education (ORISE). Support for the application of the pulsed plasma-assisted diffusion bonding technique to ferritic ODS steels at Materials & Electrochemical Research Corp. was provided by an award from the United States Department of Energy Small Business Innovation Research program. Characterization of bonded ODS alloys at ORNL was sponsored by the United States Department of Energy, Office of Fossil Energy, Advanced Research Materials Program, under Contract No. DE-AC05-00OR22725 with UT– Battelle, LLC. One of us (SND) was supported by an appointment to the ORNL Postdoctoral Research Associates Program administered jointly by ORISE and ORNL. Samples of alloy PM2000 in the appropriate condition were supplied by Dr. Johannes H. Schrö-der (Plansee, Austria), and D.W. Coffey prepared the FIB/TEM samples at ORNL.