Effect of Carbonaceous Gas Environment on the Corrosion of AISI-4330 High Strength Steel.
WATERVLIET ARSENAL N Y
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Corrosion of high strength steel in gaseous environment is largely divided in two areas, high temperature oxidation and stress corrosion cracking at lower temperatures. High temperature oxidation of the 4330 steel was conducted in CO-CO2 mixtures up to 1300C. The reaction includes decarburization, internal and external oxidation depending on the composition of the gas mixture and temperature. Cracks were observed after the stage of internal oxidation. Stress corrosion test revealed that the 4330 is susceptible to stress corrosion cracking in CO-CO2 in the presence of moisture. The cracking is transgranular and appears to involve hydrogen embrittlement at the crack tip. Author
- Properties of Metals and Alloys