Segregation of B, P, and C in the ni-based superalloy, Inconel 718

Alam T, Felfer P, Chaturvedi M, Stephenson LT, Kilburn MR, Cairney JM (2012)

Publication Status: Published

Publication Type: Journal article, Original article

Publication year: 2012

Journal

Metallurgical and Materials Transactions A-Physical Metallurgy and Materials Science ASM International

Publisher: ASM International

Book Volume: 43

Pages Range: 2183-2191

Journal Issue: 7

DOI: 10.1007/s11661-012-1085-9

Abstract

Small additions of B, P, and C can result in dramatic changes in the mechanical performance and welding behavior of Inconel 718. Although additions of B and P improve the mechanical properties, they have a detrimental effect on weldability. Adding C mitigates the negative effect on welding while retaining the improvements in mechanical performance. In this study, precise observations of the segregation of B, P, and C to the grain boundaries are made using sitespecific atom probe tomography and NanoSIMS. Changes in the segregation behavior provide a quantitative explanation for the welding response, where hot cracking is attributed to the formation of a eutectic film. Calculations of the relative positions of the B, P, and C revealed that these atoms were less likely to cluster together in the presence of C, providing insight into the likely mechanisms behind the segregation behavior in this complex, multicomponent alloy. © The Minerals, Metals & Materials Society and ASM International 2012.

Authors with CRIS profile

Peter Felfer Professur für Atom Probe Tomography

Additional Organisation(s)

Lehrstuhl für Werkstoffwissenschaften (Allgemeine Werkstoffeigenschaften)

Involved external institutions

University of Sydney (USYD) AU Australia (AU) University of Western Australia (UWA) AU Australia (AU) University of Manitoba CA Canada (CA)

How to cite

APA:

Alam, T., Felfer, P., Chaturvedi, M., Stephenson, L.T., Kilburn, M.R., & Cairney, J.M. (2012). Segregation of B, P, and C in the ni-based superalloy, Inconel 718. Metallurgical and Materials Transactions A-Physical Metallurgy and Materials Science, 43(7), 2183-2191. https://doi.org/10.1007/s11661-012-1085-9

MLA:

Alam, Talukder, et al. "Segregation of B, P, and C in the ni-based superalloy, Inconel 718." Metallurgical and Materials Transactions A-Physical Metallurgy and Materials Science 43.7 (2012): 2183-2191.

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