Accession Number : AD0292612

Title :   INFLUENCE OF MOLD WALL THICKNESS ON THE QUALITY OF INGOTS CAST FROM NICKEL-BASED ALLOYS

Corporate Author : FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO

Personal Author(s) : IODKOVSKIY,S.A. ; NOVITSKIY,V.K.

Report Date : 08 NOV 1962

Pagination or Media Count : 1

Abstract : A detailed investigation of the quality of 500 kg ingots cast from a heat-resistant, high-alloy Ni alloy established that there was virtually no liquation of elements in the body of the ingot and that the density of the metal, with the exception of defect zones, was 8.58 g/cc, uniformly. A large number of internal longitudinal and transverse cracks located along the grain boundaries were discovered when the macrostructure in the axial zone of the ingot was studied. A study was made of the causes for the appearance of internal cracks in ingots cast from a Ni alloy and methods for preventing these cracks were investigated. (Author)

Descriptors :   *HEAT RESISTANT METALS + ALLOYS, *NICKEL ALLOYS, DENSITY, FRACTURE (MECHANICS), GASES, MANUFACTURING, MELTING, MOLDINGS, NONDESTRUCTIVE TESTING, PROCESSING, THICKNESS, ULTRASONIC RADIATION

Distribution Statement : APPROVED FOR PUBLIC RELEASE