Effect of aging treatment on microstructure and properties of Al-Zr-Sc(-Er) alloys
The effects of aging treatment on microstructure and properties of Al-Zr-Sc(-Er) alloys were investigated by TEM, STEM, hardness tests and electric conductivity tests systematically. Results show that the aging response speed, peak hardness and thermal stability of Al-Zr-Sc alloys are significantly...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | zho |
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Journal of Materials Engineering
2020-05-01
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| Series: | Cailiao gongcheng |
| Subjects: | |
| Online Access: | http://jme.biam.ac.cn/CN/Y2020/V48/I5/112 |
| _version_ | 1797964884350074880 |
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| author | ZHAO Hui ZHAO Fei YANG Chang-long HAN Yu JIN Dong LI Hong-ying |
| author_facet | ZHAO Hui ZHAO Fei YANG Chang-long HAN Yu JIN Dong LI Hong-ying |
| author_sort | ZHAO Hui |
| collection | DOAJ |
| description | The effects of aging treatment on microstructure and properties of Al-Zr-Sc(-Er) alloys were investigated by TEM, STEM, hardness tests and electric conductivity tests systematically. Results show that the aging response speed, peak hardness and thermal stability of Al-Zr-Sc alloys are significantly improved by increasing Sc content, and increasing Zr content improves hardness and thermal stability, while decreasing the electric conductivity. Adding Er in Al-Zr-Sc alloys improves the aging response speed and promotes the precipitation of Zr and Sc. Hardness and electrical conductivity of alloy are improved, owing to the formation of Al<sub>3</sub>(Er, Sc, Zr) phases with core-double shell structure. For experimental alloys, one-stage aging at 300℃ provides the higher hardness but lower electric conductivity; one-stage aging at 400℃ can increase the aging response speed and electrical conductivity but decrease hardness; two-stage aging at 300℃/24 h+400℃ can lead to better match of conductivity, tensile strength and heat resistance. |
| first_indexed | 2024-04-11T01:50:38Z |
| format | Article |
| id | doaj.art-23c068113a3a429fbf8933e5f311b8c6 |
| institution | Directory Open Access Journal |
| issn | 1001-4381 1001-4381 |
| language | zho |
| last_indexed | 2024-04-11T01:50:38Z |
| publishDate | 2020-05-01 |
| publisher | Journal of Materials Engineering |
| record_format | Article |
| series | Cailiao gongcheng |
| spelling | doaj.art-23c068113a3a429fbf8933e5f311b8c62023-01-03T06:24:14ZzhoJournal of Materials EngineeringCailiao gongcheng1001-43811001-43812020-05-0148511211910.11868/j.issn.1001-4381.2019.00067720200415Effect of aging treatment on microstructure and properties of Al-Zr-Sc(-Er) alloysZHAO Hui0ZHAO Fei1YANG Chang-long2HAN Yu3JIN Dong4LI Hong-ying5School of Materials Science and Engineering, Central South University, Changsha 410083, China;School of Materials Science and Engineering, Central South University, Changsha 410083, China;State Grid Shenyang Electric Power Supply Company, Shenyang 110042, China;Global Energy Interconnection Research Institute, Beijing 102209, ChinaSchool of Materials Science and Engineering, Central South University, Changsha 410083, China;School of Materials Science and Engineering, Central South University, Changsha 410083, China;The effects of aging treatment on microstructure and properties of Al-Zr-Sc(-Er) alloys were investigated by TEM, STEM, hardness tests and electric conductivity tests systematically. Results show that the aging response speed, peak hardness and thermal stability of Al-Zr-Sc alloys are significantly improved by increasing Sc content, and increasing Zr content improves hardness and thermal stability, while decreasing the electric conductivity. Adding Er in Al-Zr-Sc alloys improves the aging response speed and promotes the precipitation of Zr and Sc. Hardness and electrical conductivity of alloy are improved, owing to the formation of Al<sub>3</sub>(Er, Sc, Zr) phases with core-double shell structure. For experimental alloys, one-stage aging at 300℃ provides the higher hardness but lower electric conductivity; one-stage aging at 400℃ can increase the aging response speed and electrical conductivity but decrease hardness; two-stage aging at 300℃/24 h+400℃ can lead to better match of conductivity, tensile strength and heat resistance.http://jme.biam.ac.cn/CN/Y2020/V48/I5/112al-zr-sc(-er) alloyagingmicrostructureelectric conductivity |
| spellingShingle | ZHAO Hui ZHAO Fei YANG Chang-long HAN Yu JIN Dong LI Hong-ying Effect of aging treatment on microstructure and properties of Al-Zr-Sc(-Er) alloys Cailiao gongcheng al-zr-sc(-er) alloy aging microstructure electric conductivity |
| title | Effect of aging treatment on microstructure and properties of Al-Zr-Sc(-Er) alloys |
| title_full | Effect of aging treatment on microstructure and properties of Al-Zr-Sc(-Er) alloys |
| title_fullStr | Effect of aging treatment on microstructure and properties of Al-Zr-Sc(-Er) alloys |
| title_full_unstemmed | Effect of aging treatment on microstructure and properties of Al-Zr-Sc(-Er) alloys |
| title_short | Effect of aging treatment on microstructure and properties of Al-Zr-Sc(-Er) alloys |
| title_sort | effect of aging treatment on microstructure and properties of al zr sc er alloys |
| topic | al-zr-sc(-er) alloy aging microstructure electric conductivity |
| url | http://jme.biam.ac.cn/CN/Y2020/V48/I5/112 |
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