Accession Number : AD0429144


Title :   COLUMBIUM ' 'H' ' SECTION PROGRAM. PHASE I - EXTRUSION. PHASE II - DRAWING.


Descriptive Note : Interim rept. no. 2, 1 Oct 63-1 Jan 64,


Corporate Author : DU PONT DE NEMOURS (E I) AND CO BALTIMORE MD DU PONT METALS CENTER


Personal Author(s) : Peterson,E V


Report Date : 01 Jan 1964


Pagination or Media Count : 26


Abstract : The development of the extrusion process for D-43 (Nb 10W-1Zr-0.1C) and Cb-752 (Nb-10W-2.5Zr) ''H'' sections continued. Efforts were concentrated on reduction of contamination and improvement of surface finish and dimensional control of extruded sections. Group II ''H'' extrusions (0.125 to 0.060 in. section thickness) showed reduced contamination and improved straightness, but surfaces and uniformity of section thickness were unsatisfactory. Group I extrusions were drawn from section thickness of 0.188 in. at room temperature with reductions of 5% to 18% per pass. Total reductions up to 28% were made on short lengths without intermediate annealing. (Author)


Descriptors :   MATERIAL FORMING , ZIRCONIUM ALLOYS , CARBON ALLOYS , EXTRUSION , DRAWING(FORMING) , LUBRICATION , GLASS , GRAPHITE , SURFACE PROPERTIES , THICKNESS , DIES


Distribution Statement : APPROVED FOR PUBLIC RELEASE