Improved cryogenic properties of the Al-xMg alloys enabled by twin-roll strip casting
High strength and ductility are vital material properties required in alloys used for structural applications at cryogenic temperatures. However, the simultaneous provision of these characteristics is challenging because the two properties are mutually contrasting from the perspective of dislocation...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2021-07-01
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| Series: | Journal of Materials Research and Technology |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785421004658 |
| _version_ | 1818640452395466752 |
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| author | Jun-Hyoung Park Sung-Hoon Kim Seung-Gyun Kim Hyung-Wook Kim Jae-Chul Lee |
| author_facet | Jun-Hyoung Park Sung-Hoon Kim Seung-Gyun Kim Hyung-Wook Kim Jae-Chul Lee |
| author_sort | Jun-Hyoung Park |
| collection | DOAJ |
| description | High strength and ductility are vital material properties required in alloys used for structural applications at cryogenic temperatures. However, the simultaneous provision of these characteristics is challenging because the two properties are mutually contrasting from the perspective of dislocation motion. Herein, we prepare binary Al-xMg alloys supersaturated with Mg using a combined technique of twin-roll strip casting and subsequent thermo-mechanical treatment; this produces Al alloys with both high strength and ductility at cryogenic temperatures. Experiments show that gradually adding Mg to Al significantly improves cryogenic tensile properties of the alloys. At the cryogenic temperature of the liquid N2 (−196 °C), the Al-5Mg and Al-7Mg alloys exhibit the ultimate tensile strength (UTS) of 370 and 450 MPa with the corresponding ductility of 93% and 87%, respectively. Comparing Al-xMg alloys with differing Mg contents elucidates avenues of simultaneously improving these properties for utilization at cryogenic temperature. This study provides a simple and robust approach for producing low-cost Al-xMg alloys with excellent cryogenic properties for structural applications. |
| first_indexed | 2024-12-16T23:11:30Z |
| format | Article |
| id | doaj.art-de43a2d9f6504b6ca3af0f91dec02cae |
| institution | Directory Open Access Journal |
| issn | 2238-7854 |
| language | English |
| last_indexed | 2024-12-16T23:11:30Z |
| publishDate | 2021-07-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj.art-de43a2d9f6504b6ca3af0f91dec02cae2022-12-21T22:12:24ZengElsevierJournal of Materials Research and Technology2238-78542021-07-011312851295Improved cryogenic properties of the Al-xMg alloys enabled by twin-roll strip castingJun-Hyoung Park0Sung-Hoon Kim1Seung-Gyun Kim2Hyung-Wook Kim3Jae-Chul Lee4Department of Materials Science and Engineering, Korea University, Seoul 136-713, South KoreaDepartment of Materials Science and Engineering, Korea University, Seoul 136-713, South KoreaDepartment of Materials Science and Engineering, Korea University, Seoul 136-713, South KoreaLight Metal Division, Korea Institute of Materials Science, Changwon 641-010, South KoreaDepartment of Materials Science and Engineering, Korea University, Seoul 136-713, South Korea; Corresponding author.High strength and ductility are vital material properties required in alloys used for structural applications at cryogenic temperatures. However, the simultaneous provision of these characteristics is challenging because the two properties are mutually contrasting from the perspective of dislocation motion. Herein, we prepare binary Al-xMg alloys supersaturated with Mg using a combined technique of twin-roll strip casting and subsequent thermo-mechanical treatment; this produces Al alloys with both high strength and ductility at cryogenic temperatures. Experiments show that gradually adding Mg to Al significantly improves cryogenic tensile properties of the alloys. At the cryogenic temperature of the liquid N2 (−196 °C), the Al-5Mg and Al-7Mg alloys exhibit the ultimate tensile strength (UTS) of 370 and 450 MPa with the corresponding ductility of 93% and 87%, respectively. Comparing Al-xMg alloys with differing Mg contents elucidates avenues of simultaneously improving these properties for utilization at cryogenic temperature. This study provides a simple and robust approach for producing low-cost Al-xMg alloys with excellent cryogenic properties for structural applications.http://www.sciencedirect.com/science/article/pii/S2238785421004658Al-Mg alloysCryogenic propertiesStacking fault energyHardening mechanismDislocation density |
| spellingShingle | Jun-Hyoung Park Sung-Hoon Kim Seung-Gyun Kim Hyung-Wook Kim Jae-Chul Lee Improved cryogenic properties of the Al-xMg alloys enabled by twin-roll strip casting Journal of Materials Research and Technology Al-Mg alloys Cryogenic properties Stacking fault energy Hardening mechanism Dislocation density |
| title | Improved cryogenic properties of the Al-xMg alloys enabled by twin-roll strip casting |
| title_full | Improved cryogenic properties of the Al-xMg alloys enabled by twin-roll strip casting |
| title_fullStr | Improved cryogenic properties of the Al-xMg alloys enabled by twin-roll strip casting |
| title_full_unstemmed | Improved cryogenic properties of the Al-xMg alloys enabled by twin-roll strip casting |
| title_short | Improved cryogenic properties of the Al-xMg alloys enabled by twin-roll strip casting |
| title_sort | improved cryogenic properties of the al xmg alloys enabled by twin roll strip casting |
| topic | Al-Mg alloys Cryogenic properties Stacking fault energy Hardening mechanism Dislocation density |
| url | http://www.sciencedirect.com/science/article/pii/S2238785421004658 |
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