Some Implications of the Role of Non-Equilibrium Metallurgical Reactions in Gun Tube Erosion.
WATERVLIET ARSENAL N Y
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Discussed are the metallurgical reactions expected to occur in conventional gun steel 0.35C during heating from ambient temperature to various peak temperatures up to the melting point of the alloy for both equilibrium heating and non-equilibrium heating conditions. Corroboration of expected results with experimental data are also discussed. One of the most significant implications of applying non-equilibrium metallurgy theory to gun steel is that a liquid grain boundary film can be formed at temperatures greater than 600F below the equilibrium melting point of the alloy. The interaction of these liquid grain boundaries with mechanical and thermal stresses together with chemical interactions are related to the physical removal of material from the bore surface, i.e., gun tube erosion. Author
- Metallurgy and Metallography