THE DETERMINATION OF THE EQUILIBRIUM PHASE DIAGRAM, ZIRCONIUM-NIOBIUM. Period covered: March 1, 1960 to April 1, 1960
Technical Report
·
OSTI ID:4144762
Hardness data were gathered for Zr--Nb alloys annealed at 600 to 1000 deg C for various periods, over the entire composition range. The data for 600, 640, 700, and 900 deg C plotted against composition are included and show that hardness reaches a maximum with about 9 wt.% Nb for anneals above 620 deg C, whereas anneals below this temperature show no peak. The microstructure of the alloys was also examined, and those annealed above 600 deg C exhibited transformation ( beta -- alpha Zr) products, while the 600 deg C alloy showed none. This in conjunction with the hardness data would indicate an invariant transformation temperature between 600 and 620 deg C. (D.L.C.)
- Research Organization:
- Denver. Univ. Denver Research Inst.
- NSA Number:
- NSA-14-012943
- OSTI ID:
- 4144762
- Report Number(s):
- TID-5768
- Country of Publication:
- United States
- Language:
- English
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