Accession Number : AD0810880

Title :   ARC MELTING SUPERALLOYS FOR EXTRUSION STUDIES.

Descriptive Note : Summary rept. Apr 65-Jun 66,

Corporate Author : AIR FORCE MATERIALS LAB WRIGHT-PATTERSON AFB OH

Personal Author(s) : Inouye, Shingo ; Saul, George

Report Date : NOV 1966

Pagination or Media Count : 24

Abstract : A comparative study was made of two consumable arc melting techniques for the production of super alloy ingots. One technique utilized a vacuum atmosphere and the other a partial pressure of argon. The argon atmosphere allowed a low arc current to be maintained for hot topping while the vacuum atmosphere would not support a stable low current arc. Greater ingot yields were therefore recovered with the argon technique because a smaller shrinkage cavity was produced. Chemical analyses and tensile data of the two techniques were similar. Both ingot types showed good extrudability. (Author)

Descriptors :   *NICKEL ALLOYS), (*CONSUMABLE ELECTRODE PROCESS, (*COBALT ALLOYS, CONSUMABLE ELECTRODE PROCESS), CASTINGS, VACUUM, ARGON, EXTRUSION, MICROSTRUCTURE, TENSILE PROPERTIES, IMPACT TESTS.

Subject Categories : Properties of Metals and Alloys
      Fabrication Metallurgy

Distribution Statement : APPROVED FOR PUBLIC RELEASE