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| name |
email |
phone |
|
| Carelyn E. Campbell |
carelyn.campbell@nist.gov |
301.975.4920 |
| Lyle Edward Levine |
lyle.levine@nist.gov |
301.975.6032 |
| Mark R. Stoudt |
mark.stoudt@nist.gov |
301.975.6025 |
Additively-manufactured metal alloy components must provide adequate resistance to corrosive service environments. This research will investigate the corrosion and environmentally-induced cracking (stress corrosion cracking, hydrogen embrittlement, etc.) susceptibility of additively manufactured alloys and components in room-temperature aqueous environments. Experimental methods include slow-strain-rate tensile testing with simultaneous electrochemical studies, polarization resistance, electrochemical impedance spectroscopy, and scratch repassivation. Experimental polarization and impedance spectroscopy measurement will be compared with CALPHAD-based models predicting phase stability regions as functions of potential and current (e.g., E vs pH diagrams).
1) M. R. Stoudt, R. E. Ricker, E. A. Lass and L. E. Levine, JOM 2017, vol. 69, pp. 506-515.
Additive Manufacturing; Metals; Corrosion; Stress Corrosion Cracking; Hydrogen Embrittlement; Corrosion Fatigue; CALPHAD
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