SECOND QUARTERLY REPORT ON ALLOYS OF Zr WITH Nb AND Sn , JULY 1, 1961- SEPTEMBER 30, 1961

Technical Report · Fri Oct 20 04:00:00 EDT 1961

OSTI ID:4085798

A test of the constitution of ZrNbSn alloys demonstrated that a tin content decreases the solubility of niobium in alpha zirconium. Below 590 deg C, the alloy ZrNb/sub 3/Sn/sub 1/ consists of alpha /sub Zr/ solid solutions and the BETA /sub Nb/ phase. At higher temperatures, increasing proportions of the BETA /sub Zr/ phase are present. Minor changes in the Nb and Sn content of the ZrNb/sub 3/Sn/sub 1/ alloy, during testing times of up to 1000 hours, exert no influence on the corrosion behavior in water at 350 deg C and steam at 400 deg C. In steam at 480 deg C, an increased tin content leads to intensified corrosion attack. Working after final annealing leads to slightly increased corrosion. When determinlng the influence of final annealing on corrosion behavior, it was found that the annealing treatments must be carried out below 590 deg C. Fatigue tests on hydrogen-charged samples of ZrNb/sub 2/, ZrNb/sub 3/Sn/sub 1/, and Zircaloy-2 were begun. Welding tests on the ZrNb/sub 3/Sn/sub 1/ alloy showed that the alloy is weldable by the argon arc process. The hardness and corrosion behavior of the welding samples can be influenced by a subsequent heat treatment. (auth)

• Research Organization: Metallgesellschaft A.G., Frankfurt am Main
• NSA Number: NSA-18-014360
• OSTI ID: 4085798
• Report Number(s): EURAEC-199
• Country of Publication: Germany
• Language: English

Related Subjects

ALLOTROPY
ANNEALING
ARGON
COLD WORKING
CORROSION
ELECTRIC ARCS
FATIGUE
HARDNESS
HYDROGEN
INERT GASES
INTERMETALLIC COMPOUNDS
MATERIALS TESTING
METALS, CERAMICS, AND OTHER MATERIALS
NIOBIUM
NIOBIUM ALLOYS
PHASE DIAGRAMS
SAMPLING
SOLID SOLUTIONS
SOLUBILITY
STEAM
TEMPERATURE
TIN
TIN ALLOYS
WATER
WELDING
ZIRCALOY
ZIRCONIUM
ZIRCONIUM ALLOYS
ZIRCONIUM-ALPHA