Accession Number:

AD0271943

Title:

FABRICATION OF WIDE TUNGSTEN SHEET BY POINT DEFORMATION TECHNIQUES

Descriptive Note:

Corporate Author:

WAH CHANG CORP ALBANY OREG

Personal Author(s):

Report Date:

1962-01-31

Pagination or Media Count:

1.0

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 18-in.-thick slices. These materials, in addition to 18-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 38-in. on either side of the joint with a band of large grains located adjacent to the fusion zone. Author

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE