Effect of inhomogeneous composition on the thermal conductivity of an Al alloy during the precipitation-hardening process
Precipitation hardening of Al alloys is an essential aging process for industrial applications demanding lightweight and high-mechanical strength materials. However, this process drastically reduces the thermal conductivity of the Al alloy owing to the formation of intermetallic precipitates. Becaus...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2020-09-01
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| Series: | Journal of Materials Research and Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785420315398 |
| _version_ | 1818154342718373888 |
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| author | Wooju Lee Jongkook Lee Woomin Kyoung Hoodam Lee Hyunjoo Lee Dongchoul Kim |
| author_facet | Wooju Lee Jongkook Lee Woomin Kyoung Hoodam Lee Hyunjoo Lee Dongchoul Kim |
| author_sort | Wooju Lee |
| collection | DOAJ |
| description | Precipitation hardening of Al alloys is an essential aging process for industrial applications demanding lightweight and high-mechanical strength materials. However, this process drastically reduces the thermal conductivity of the Al alloy owing to the formation of intermetallic precipitates. Because the growth of the intermetallic precipitates is a complicated process involving the diffusion of alloying elements as well as phase transformation, the prediction of the thermal conductivity during the precipitation process has not been accomplished. Herein, an accurate prediction method for the effective thermal conductivity of Al alloys during the precipitation process is presented. Interestingly, the study finds that the inhomogeneous distribution of the composition in the Al solid solution generates a considerably inhomogeneous distribution of the thermal conductivity around the precipitates; consequently, the accuracy of our prediction is 30% higher than that in previous studies. |
| first_indexed | 2024-12-11T14:24:59Z |
| format | Article |
| id | doaj.art-6119ab090d3d402eb4b089f81e871ba3 |
| institution | Directory Open Access Journal |
| issn | 2238-7854 |
| language | English |
| last_indexed | 2024-12-11T14:24:59Z |
| publishDate | 2020-09-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj.art-6119ab090d3d402eb4b089f81e871ba32022-12-22T01:02:43ZengElsevierJournal of Materials Research and Technology2238-78542020-09-01951013910147Effect of inhomogeneous composition on the thermal conductivity of an Al alloy during the precipitation-hardening processWooju Lee0Jongkook Lee1Woomin Kyoung2Hoodam Lee3Hyunjoo Lee4Dongchoul Kim5Department of Mechanical Engineering, Sogang University, Seoul, 04107, Republic of Korea; Research & Development Division, Hyundai Motor Group, 37 Cheoldobangmulgwan-ro, Uiwang-si, Gyeonggi-do 16082, Republic of KoreaResearch & Development Division, Hyundai Motor Group, 37 Cheoldobangmulgwan-ro, Uiwang-si, Gyeonggi-do 16082, Republic of KoreaStrategy and Technology Division, Hyundai Motor Group, 37 Cheoldobangmulgwan-ro, Uiwang-si, Gyeonggi-do 16082, Republic of KoreaResearch & Development Division, Hyundai Motor Group, 37 Cheoldobangmulgwan-ro, Uiwang-si, Gyeonggi-do 16082, Republic of KoreaDepartment of Mechanical Engineering, Sogang University, Seoul, 04107, Republic of KoreaDepartment of Mechanical Engineering, Sogang University, Seoul, 04107, Republic of Korea; Corresponding author.Precipitation hardening of Al alloys is an essential aging process for industrial applications demanding lightweight and high-mechanical strength materials. However, this process drastically reduces the thermal conductivity of the Al alloy owing to the formation of intermetallic precipitates. Because the growth of the intermetallic precipitates is a complicated process involving the diffusion of alloying elements as well as phase transformation, the prediction of the thermal conductivity during the precipitation process has not been accomplished. Herein, an accurate prediction method for the effective thermal conductivity of Al alloys during the precipitation process is presented. Interestingly, the study finds that the inhomogeneous distribution of the composition in the Al solid solution generates a considerably inhomogeneous distribution of the thermal conductivity around the precipitates; consequently, the accuracy of our prediction is 30% higher than that in previous studies.http://www.sciencedirect.com/science/article/pii/S2238785420315398Aluminum alloyPhase-Field modelPrecipitation-HardeningThermal conductivity |
| spellingShingle | Wooju Lee Jongkook Lee Woomin Kyoung Hoodam Lee Hyunjoo Lee Dongchoul Kim Effect of inhomogeneous composition on the thermal conductivity of an Al alloy during the precipitation-hardening process Journal of Materials Research and Technology Aluminum alloy Phase-Field model Precipitation-Hardening Thermal conductivity |
| title | Effect of inhomogeneous composition on the thermal conductivity of an Al alloy during the precipitation-hardening process |
| title_full | Effect of inhomogeneous composition on the thermal conductivity of an Al alloy during the precipitation-hardening process |
| title_fullStr | Effect of inhomogeneous composition on the thermal conductivity of an Al alloy during the precipitation-hardening process |
| title_full_unstemmed | Effect of inhomogeneous composition on the thermal conductivity of an Al alloy during the precipitation-hardening process |
| title_short | Effect of inhomogeneous composition on the thermal conductivity of an Al alloy during the precipitation-hardening process |
| title_sort | effect of inhomogeneous composition on the thermal conductivity of an al alloy during the precipitation hardening process |
| topic | Aluminum alloy Phase-Field model Precipitation-Hardening Thermal conductivity |
| url | http://www.sciencedirect.com/science/article/pii/S2238785420315398 |
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