Accession Number : AD0765693


Title :   Preliminary Study into Shell Mold Casting of Nominal 60-Nitinol Alloy


Corporate Author : NAVAL ORDNANCE LAB WHITE OAK MD


Personal Author(s) : Buehler, William J ; Jones, Richard E ; Heintzelman, Ernest F ; Lundsten, Richard H


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/765693.pdf


Report Date : 12 Jul 1973


Pagination or Media Count : 28


Abstract : The present study was initiated to determine the feasibility of shell mold casting nominal 60-Nitinol into suitable EOD (Explosive Ordnance Disposal) tools. Pr Primary emphasis was directed to alloy-mold interaction, effects of graphite mold coating, shrinkage and porosity problems, alloy fluidity, surface finish and definition and property response of cast alloy. Based upon the results, 60-Nitinol appears quite suited to shell molding and a casting approach, provided the alloy melting and casting are conducted in a vacuum or controlled inert atmosphere. The major area of possible future concern lies in the casting porosity associated with the relatively large liquid-to-solid shrinkage of nominal 60-Nitinol.


Descriptors :   *NICKEL ALLOYS , *CASTING , GRAPHITE , POROSITY , FEASIBILITY STUDIES , MOLDING MATERIALS , TITANIUM ALLOYS , SHRINKAGE , COMPATIBILITY , MAGNETIC PROPERTIES , SURFACE PROPERTIES


Subject Categories : Fabrication Metallurgy


Distribution Statement : APPROVED FOR PUBLIC RELEASE