FINAL REPORT ON MISCIBILITY GAPS IN Nb-U AND Nb-U-Zr SYSTEMS Page: 4 of 99
This report is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided to Digital Library by the UNT Libraries Government Documents Department.
The following text was automatically extracted from the image on this page using optical character recognition software:
FULMER RESEARCH INSTITUTE LTD.
Contract No. 62558-(24)-1770. R.126/4/JUNE 1959.
THE MISCIBILITY GAPS IN THE U-Nb AND U-Nb-Zr SYSTHv1
B.S.Berry, M.Sc., Ph.D.
The miscibility gap in the U-Nb system has been established
using metallogragh'c ard X-ray techniques. The monotectoid temperature
is placed at 64.0 - 20C and the composition limits at that temperature
are 65-70 a/o Nb and 17.5 1 a/o Nb, the monotectoid.
The 7000, 6500 and 60000 isothermal sections of the U-Nb-Zr
system have also been investigated. Each of the miscibility gaps
present in the limiting binary sections was found to be closed by
addition of the third element. At 7000C the U-Zr gap is closed by
addition of less than 5 a/o Nb. The behaviour of the Zr-Nb gap is
less certain owing to the sluggish reactions close to this binary
system but the gap appears to be closed by about 15 a/o U. The
U-Nb gap has been studied in more detail and is closed by 14 a/o Zr.
To a near approximation the ternary U-Nb gap can be considered to
be bounded by the composition lines 33 a/o U, 14 a/o Zr and about
20 a/o Nb depending on temperature. A notable feature is that at
Nb and Zr compositions approximately corresponding to a line of
minimum lattice distortion, the y phase at 60000 bulges towards the
As a result of the closure of the gaps the y phase is stable
over a large area of the diagram at temperatures down to at least
Here’s what’s next.
This report can be searched. Note: Results may vary based on the legibility of text within the document.
Tools / Downloads
Get a copy of this page or view the extracted text.
Citing and Sharing
Basic information for referencing this web page. We also provide extended guidance on usage rights, references, copying or embedding.
Reference the current page of this Report.
FINAL REPORT ON MISCIBILITY GAPS IN Nb-U AND Nb-U-Zr SYSTEMS, report, January 1, 1959; United States. (digital.library.unt.edu/ark:/67531/metadc877724/m1/4/: accessed January 19, 2019), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.