FABRICATION OF WIDE TUNGSTEN SHEET BY POINT DEFORMATION TECHNIQUES
Abstract
Commercial H-reduced W powder was used to produce 2 sintered cylinders with a density about 94% of theoretical. One of these was upset forged a total of 70% in 2 steps by a 700-ton press at 1600 C. Both the as-sintered and upset forged W were sectioned into 1/8-in.-thick slices. These materials, in addition to 1/8-in. thick sheet produced by powder metallurgy techniques, will be utilized in tensile testing and conical flow turning experiments. Two cylindrical flow turn blanks, produced by a proprietary process, have been received from a commercial vendor. This process employs powder metallurgy sheet to form a hollow cylinder which is braze welded using molybdenum filler rod. An examination of the blank reveals a recrystallized grain structure beginning about 3/8-in. on either side of the joint with a band of large grains located adjacent to the fusion zone. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 31, 1962
- Accession Number
- AD0271943