DEVELOPMENT AND EVALUATION OF TUNGSTEN-BASE ALLOYS.
Abstract
Tungsten-base alloys were prepared by the vacuum-arc-casting process. Charges blended to obtain each of the aim compositions contained small additions of carbon to effect deoxidation during arc melting. One heat of the W + 0.05% Zr composition was deoxidized with boron. Poor recoveries of wrought bar stock were experienced when conversion was attempted by conventional extrusion and rolling procedures. When the blanks were encapsulated in molybdenum, extruded and swaged to 1/2-in.-diameter bar stock, good recoveries were obtained. Tensile and creeprupture strengths of alloys were higher than those observed for unalloyed tungsten of comparable carbon content. The variation in strength and, workability from alloy to alloy was noticeably sensitive to residual carbon and boron contents. Tensile transition temperatures were markedly influenced by the degree of deoxidation achieved during arc melting. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 15, 1963
- Accession Number
- AD0424207
Entities
People
- M. Semchyshen.
- Robert Q. Barr