Accession Number:

AD0269262

Title:

REPORT OF THE SUBPANEL ON CONSOLIDATION AND FABRICATION REFRACTORY METALS SHEET ROLLING PANEL

Descriptive Note:

Corporate Author:

MATERIALS ADVISORY BOARD (NAS-NRC) WASHINGTON D C

Personal Author(s):

Report Date:

1961-12-01

Pagination or Media Count:

1.0

Abstract:

The report recapitulates the highlights from three meetings concerned with consolidation, hot working, and warm-cold finishing. Discussions were not confined to any one refractory metal, nor did they in each case extend to all of the materials being produced. It is apparent that some problem areas are peculiar to one or other refractory alloy while other problem areas are common in varying degree to all. An attempt was made to catalogue the factors which bear upon the initial hot workability of sintered W sheet bar with physical attributes including 1 a minimum sintered density of 90. 2 a medium grain size, ASTM 6 to 8 too fine a grain size requires high flow pressure and has a likelihood of brittleness a coarse grain leads to a high unit grain boundary area segregation of impurities, 3 a pore distribution and size adequate to inhibit grain coarsening, and 4 a reduced level of interstitial impurities. Author

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE