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Opportunity at National Institute of Standards and Technology (NIST)

Corrosion Behavior of Additively-Manufactured Alloys

Location

Material Measurement Laboratory, Materials Science and Engineering Division

RO# Location
50.64.21.C0193 Gaithersburg, MD

Please note: This Agency only participates in the February and August reviews.

Advisers

Name E-mail Phone
Levine, Lyle Edward lyle.levine@nist.gov 301.975.6032
Stoudt, Mark R. mark.stoudt@nist.gov 301.975.6025

Description

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.

Keywords:
Additive Manufacturing; Metals; Corrosion; Stress Corrosion Cracking; Hydrogen Embrittlement; Corrosion Fatigue; CALPHAD

Eligibility

Citizenship:  Open to U.S. citizens
Level:  Open to Postdoctoral applicants
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