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

摘要

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. 4340Steel, Pyromet X-15, C. G. 27,Rene 41,and Uidmet 700were 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 700all interacted strongly with copper in sessile-drop experiments,only Rene 41showed any interaction with copper alloy in the firing experiments. (Modified author abstract)