Accession Number:

AD0780759

Title:

Interaction of Copper-Containing Rotating Band Metal with Gun Bores at the Environment Present in a Gun Tube

Descriptive Note:

Technical rept.

Corporate Author:

WATERVLIET ARSENAL NY

Personal Author(s):

• Montgomery, R. S.

Report Date:

1974-06-01

Pagination or Media Count:

59.0

Abstract:

The nickel-based, cobalt-containing high temperature alloys now being considered for barrels for rapid-firing aircraft weapons could be seriously affected by interaction with copper-containing rotating band metal. Copper could interact with the bore metal at the high operating temperatures planned for the new alloy barrels with the formation of low-melting, easily-eroded surface layers. 4340 Steel, Pyromet X-15, C. G. 27, Rene 41, and Uidmet 700 were studied with sessile-drop experiments and firing experiments which simulated conditions in the bore of a rapid-firing gun. It was found that, although C. G. 27, Rene 41, and Uidmet 700 all interacted strongly with copper in sessile-drop experiments, only Rene 41 showed any interaction with copper alloy in the firing experiments.

Descriptors:

• *COPPER
• *ROTATING BANDS
• *EROSION
• *GUN BARRELS
• HEAT RESISTANT ALLOYS
• AUTOMATIC WEAPONS
• STEEL
• COBALT ALLOYS
• SMALL ARMS AMMUNITION

Subject Categories:

• Metallurgy and Metallography
• Guns

Distribution Statement:

APPROVED FOR PUBLIC RELEASE