Accession Number : AD0803384

Title :   STRUCTURE SENSITIVE PROPERTIES OF ARC MELTED CARBIDES.

Descriptive Note : Rept. for Jul 65-Jun 66,

Corporate Author : AEROSPACE CORP EL SEGUNDO CA LABS DIV

Personal Author(s) : Rossi, Ronald C. ; Carnohan, Robert D.

Report Date : AUG 1966

Pagination or Media Count : 25

Abstract : Detailed studies of the properties of alloys of arc-melted carbides of the Group IVa metals with graphite reveal a strong dependence on the microstructures characteristic of the carbon content. Hypereutectic alloys consisting of primary graphite flakes in a lamellar eutectic matrix of carbide and graphite are shown to possess an inherent capacity for dissipating the elastic energy released during crack propagation. This phenomenon results in an enhanced resistance to failure by thermal shock. (Author)

Descriptors :   *SENSITIVITY), (*CARBIDES, ARC MELTING), (*STRUCTURAL PROPERTIES, GRAPHITE, CASTING, EUTECTICS, MICROSTRUCTURE, FRACTURE(MECHANICS), THERMAL SHOCK, THERMAL STRESSES, REFRACTORY METALS.

Subject Categories : Physical Chemistry

Distribution Statement : APPROVED FOR PUBLIC RELEASE