Carburization-decarburization behavior of ferritic steels in a sodium environment. [LMFBR]

Conference · Sat Apr 01 04:00:00 EST 1978

OSTI ID:6478346

Chopra, O K; Natesan, K; Kassner, T F

The kinetics of the carburization-decarburization process of Fe-Cr-Mo ferritic steels in high-temperature flowing sodium have been studied in terms of (1) the equilibrium carbon activity-carbon concentration relationship for the steels, (2) the chromium and molybdenum content in the steel, and (3) the carbon concentration in sodium. Ferritic steels with chromium and molybdenum contents in the range 0.5 to 12 wt % and 0.5 to 2.5 wt %, respectively, were exposed to sodium at temperatures between 773 and 973 K. Carbon equilibration experiments were conducted using 0.05-mm-thick foils, and cylindrical specimens (6.5 mm in diameter) were used to establish the kinetics of carbon migration in the steels. The sodium exposure time varied from 3.6 to 25 Ms.

• Research Organization: Argonne National Laboratory (ANL), Argonne, IL (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 6478346
• Report Number(s): CONF-780493-4; ON: DE81016424
• Country of Publication: United States
• Language: English

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SODIUM
STEELS
SURFACE HARDENING
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