Accession Number : AD0872278

Title :   Development of Dispersion-Strengthened Nickel-Base Sheet Alloys.

Descriptive Note : Technical rept. for 15 May 67-28 Feb 69,

Corporate Author : SYLVANIA ELECTRIC PRODUCTS INC TOWANDA PA CHEMICAL AND METALLURGICAL DIV

Personal Author(s) : Scheithauer, W., Jr. ; Cheney, R. F.

Report Date : 30 JAN 1970

Pagination or Media Count : 89

Abstract : Dispersion-Strengthened Ni-15Mo-ThO2 sheet was rolled from plate which was made by pressing, canning and extruding powders prepared by spray drying and selective reduction. Good ThO2 dispersions and strongly developed crystallographic textures were both necessary for good strengths at 1093 degrees C. The yield strength for Ni-15Mo-3ThO2 sheet with 200 degrees A average ThO2 diameter was 23.2 ksi at 1093 degrees C. The stress for fracture in 100 hours at 1093 degrees C in vacuum was 13.5 ksi. Attempts to make a Ni-20Cr-2ThO2 sheet with good strength at 1093 degrees C were unsuccessful. (Author)

Descriptors :   *DISPERSION HARDENING), (*CORROSION RESISTANT ALLOYS, NICKEL ALLOYS, MOLYBDENUM ALLOYS, THORIUM ALLOYS, OXIDES, POWDER METALLURGY, COMPACTING, EXTRUSION, ROLLING(METALLURGY), HEAT TREATMENT, MICROSTRUCTURE, TENSILE PROPERTIES, MECHANICAL PROPERTIES, CHEMICAL ANALYSIS.

Subject Categories : Properties of Metals and Alloys
      Fabrication Metallurgy

Distribution Statement : APPROVED FOR PUBLIC RELEASE