Influence of heat treatment on the conductivity of nickel-based superalloys
Non-destructive measurement of residual stress at the subsurface of nickel-based alloys using eddy current method has been limited by its sensitivity to its microstructure, especially to the precipitates. This paper investigates the effect of heat treatment on the electrical conductivity of RR1000,...
| Main Authors: | , , , , |
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| Format: | Journal Article |
| Language: | English |
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2018
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| Online Access: | https://hdl.handle.net/10356/87906 http://hdl.handle.net/10220/46844 |
| _version_ | 1811676786821431296 |
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| author | Nagarajan, Balasubramanian Castagne, Sylvie Annamalai, Swaminathan Fan, Zheng Wong, Chow Cher |
| author2 | Zhou, J. |
| author_facet | Zhou, J. Nagarajan, Balasubramanian Castagne, Sylvie Annamalai, Swaminathan Fan, Zheng Wong, Chow Cher |
| author_sort | Nagarajan, Balasubramanian |
| collection | NTU |
| description | Non-destructive measurement of residual stress at the subsurface of nickel-based alloys using eddy current method has been limited by its sensitivity to its microstructure, especially to the precipitates. This paper investigates the effect of heat treatment on the electrical conductivity of RR1000, a nickel-based superalloy with a large fraction of γ’ precipitates. Different heat treatment conditions, ranging from solution heat treatment to precipitation hardening with different aging times and temperatures, are used to achieve varying initial microstructures. Hardness of the samples is measured first to quantify the heat treated samples followed by the measurement of electrical conductivity using the conductivity probes of frequencies between 1 MHz and 5 MHz. The relationship between the hardness and conductivity of the heat treated samples is then correlated further. The results highlight the significant influence of heat treatment on the sample hardness and the electrical conductivity of RR1000. |
| first_indexed | 2024-10-01T02:27:01Z |
| format | Journal Article |
| id | ntu-10356/87906 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T02:27:01Z |
| publishDate | 2018 |
| record_format | dspace |
| spelling | ntu-10356/879062023-03-04T17:16:38Z Influence of heat treatment on the conductivity of nickel-based superalloys Nagarajan, Balasubramanian Castagne, Sylvie Annamalai, Swaminathan Fan, Zheng Wong, Chow Cher Zhou, J. Adiguzel, O. School of Mechanical and Aerospace Engineering Rolls-Royce@NTU Corporate Lab Conductivity DRNTU::Engineering::Mechanical engineering Nickel-based Superalloy Non-destructive measurement of residual stress at the subsurface of nickel-based alloys using eddy current method has been limited by its sensitivity to its microstructure, especially to the precipitates. This paper investigates the effect of heat treatment on the electrical conductivity of RR1000, a nickel-based superalloy with a large fraction of γ’ precipitates. Different heat treatment conditions, ranging from solution heat treatment to precipitation hardening with different aging times and temperatures, are used to achieve varying initial microstructures. Hardness of the samples is measured first to quantify the heat treated samples followed by the measurement of electrical conductivity using the conductivity probes of frequencies between 1 MHz and 5 MHz. The relationship between the hardness and conductivity of the heat treated samples is then correlated further. The results highlight the significant influence of heat treatment on the sample hardness and the electrical conductivity of RR1000. NRF (Natl Research Foundation, S’pore) Published version 2018-12-06T03:33:36Z 2019-12-06T16:51:52Z 2018-12-06T03:33:36Z 2019-12-06T16:51:52Z 2015 Journal Article Nagarajan, B., Castagne, S., Annamalai, S., Fan, Z., & Wong, C. C. (2015). Influence of heat treatment on the conductivity of nickel-based superalloys. MATEC Web of Conferences, 30, 01001-. doi:10.1051/matecconf/20153001001 https://hdl.handle.net/10356/87906 http://hdl.handle.net/10220/46844 10.1051/matecconf/20153001001 en MATEC Web of Conferences © 2015 The Author(s) (MATEC Web of Conferences) (Published by EDP Sciences). This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. 4 p. application/pdf |
| spellingShingle | Conductivity DRNTU::Engineering::Mechanical engineering Nickel-based Superalloy Nagarajan, Balasubramanian Castagne, Sylvie Annamalai, Swaminathan Fan, Zheng Wong, Chow Cher Influence of heat treatment on the conductivity of nickel-based superalloys |
| title | Influence of heat treatment on the conductivity of nickel-based superalloys |
| title_full | Influence of heat treatment on the conductivity of nickel-based superalloys |
| title_fullStr | Influence of heat treatment on the conductivity of nickel-based superalloys |
| title_full_unstemmed | Influence of heat treatment on the conductivity of nickel-based superalloys |
| title_short | Influence of heat treatment on the conductivity of nickel-based superalloys |
| title_sort | influence of heat treatment on the conductivity of nickel based superalloys |
| topic | Conductivity DRNTU::Engineering::Mechanical engineering Nickel-based Superalloy |
| url | https://hdl.handle.net/10356/87906 http://hdl.handle.net/10220/46844 |
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