DEVELOPMENT OF A DUCTILE TUNGSTEN SHEET ALLOY
Abstract
Binary alloys of W with thoria, zirconia, and the Groups VII and VIII metals are being evaluated to determine the effects of these additions on lowering the ductile-to-brittle transition temperature of W. Both powder-metallurgy andARC-MELTING TECHNIQUES ARE BEING USED IN ALLOY PREPARATION. The first series of W-ThO2 and W-ZrO2 alloys prepared by powder metallurgy from soluble salt additions were fabricated to supply strip for property studies. These alloys were tested for bend ductility in the stressrelieved codition. Minimum transition temperatures of 140 and 130 C were obtained at 4 vol-% ThO2 and ZrO2, respectively. The optimum solidsolution aloys of W with the Groups VII and VIII metals were prepared as 75-g button ingots. The softening effects previously observed in the 10-g buttons wre reproduced in those alloys, W-5Re and W-0.3Ir, which did not present compositional control problems during melting. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 26, 1961
- Accession Number
- AD0268039
Entities
People
- G. S Root
- J. L. Ratliff
Organizations
- Battelle Memorial Institute