Early Stages of Age Hardening in U-6%Nb: An Energy Barrier Hypothesis for Twin Reorientation
- Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
It is well known that age hardening occurs in U-6%Nb (Ref. 1-9). Figure 1 shows that increases in hardness occur at aging temperatures up to ~400°C, and overaging occurs above ~450°C. Overaging occurs by cellular decomposition of the αʺb martensite, similar to overaging reactions in other uranium alloys. But the mechanism of age hardening remains elusive, particularly in its early stages.
- Research Organization:
- Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
- Sponsoring Organization:
- USDOE National Nuclear Security Administration (NNSA)
- DOE Contract Number:
- AC52-07NA27344
- OSTI ID:
- 2584711
- Report Number(s):
- LLNL--TR-2002585
- Country of Publication:
- United States
- Language:
- English
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