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

Journal article
(Original article)


Publication Details

Author(s): Alam T, Felfer P, Chaturvedi M, Stephenson LT, Kilburn MR, Cairney JM
Journal: Metallurgical and Materials Transactions A-Physical Metallurgy and Materials Science
Publisher: ASM International
Publication year: 2012
Volume: 43
Journal issue: 7
Pages range: 2183-2191
ISSN: 1073-5623


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.



FAU Authors / FAU Editors

Felfer, Peter Prof. Dr.
Juniorprofessor für Werkstoffwissenschaften (3D-Nanoanalytik und Atomsondenmikroskopie)


External institutions with authors

University of Manitoba
University of Sydney
University of Western Australia (UWA)


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://dx.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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Last updated on 2018-11-12 at 20:50