Accession Number : AD0293873

Title :   THE DEVELOPMENT OF OPTIMUM MANUFACTURING METHODS FOR COLUMBIUM ALLOY SHEET. ITEM 1: SUB-CONTRACT FOR THE DEVELOPMENT OF SHEET PROCESS FOR X-110 ALLOY

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

Personal Author(s) : MINCHER,A.L.

Report Date : 15 OCT 1962

Pagination or Media Count : 1

Abstract : Processing of columbium alloy sheet panels is complete except for sheet flattening. Two 8 inch diameter ingots of the X-110 alloy were converted by extrusion and rolling to 28 inch wide sheet at three gages 0.020, 0.040 and 0.063 inch. Initial evaluation of the sheet has indicated satisfactory gage uniformity and flatness. Target tensile properties were obtained in the 0.040 and 0.063 inch sheet, but high temperature strength of the 0.020 inch sheet was some 20% lower than obtained in the thicker gages. (Author)

Descriptors :   *NIOBIUM ALLOYS, *PROCESSING, CARBON ALLOYS, ELECTRON MICROSCOPY, FORGING, MANUFACTURING, MECHANICAL PROPERTIES, MICROSCOPY, MICROSTRUCTURE, TUNGSTEN ALLOYS, ZIRCONIUM ALLOYS

Distribution Statement : APPROVED FOR PUBLIC RELEASE