Nanoparticle-bands enabled strength-ductility synergy in wrought Al-Cu alloys
Refining the second phase is an effective approach to enhancing the strength and toughness of metallic materials. This paper adopts a novel composite thermomechanical processing technique (pre-annealing, semi-solid isothermal treatment, and post double extrusion) to fabricate a high strength-ductili...
Saved in:
| Main Authors: | , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2025-03-01
|
| Series: | Materials & Design |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0264127525000954 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832540488980234240 |
|---|---|
| author | Yunfeng Hu Mojia Li Jiaheng Li Yingbo Zhang Dongdi Yin Ying Zeng Hui Chen |
| author_facet | Yunfeng Hu Mojia Li Jiaheng Li Yingbo Zhang Dongdi Yin Ying Zeng Hui Chen |
| author_sort | Yunfeng Hu |
| collection | DOAJ |
| description | Refining the second phase is an effective approach to enhancing the strength and toughness of metallic materials. This paper adopts a novel composite thermomechanical processing technique (pre-annealing, semi-solid isothermal treatment, and post double extrusion) to fabricate a high strength-ductility Al-4.5 wt% Cu binary alloy via the spheroidization and nano-crystallization of the primary phase (Al2Cu). The resulting room-temperature tensile strength, yield strength, and elongation reached 450 MPa, 339 MPa, and 17.3 %. The combined effects of dual nanoparticle (i.e. broken nanoparticles and precipitated nanoparticles) strengthening and grain boundary strengthening are identified as the direct reasons for the enhanced strength. The uniformly alternated coarse and fine grain regions in the bimodal grain structure can coordinate deformation, and the dispersed spherical phase can weaken stress concentration, which are important factors for high plasticity. This work offers new insights for developing high-strength ductility hypoeutectic Al-Cu alloys. |
| format | Article |
| id | doaj-art-cf446d55d20e49f39aa8d4c6496b74cf |
| institution | Kabale University |
| issn | 0264-1275 |
| language | English |
| publishDate | 2025-03-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Materials & Design |
| spelling | doaj-art-cf446d55d20e49f39aa8d4c6496b74cf2025-02-05T04:31:06ZengElsevierMaterials & Design0264-12752025-03-01251113675Nanoparticle-bands enabled strength-ductility synergy in wrought Al-Cu alloysYunfeng Hu0Mojia Li1Jiaheng Li2Yingbo Zhang3Dongdi Yin4Ying Zeng5Hui Chen6Key Laboratory of Advanced Technologies of Materials Ministry of Education School of Materials Science and Engineering Southwest Jiaotong University Chengdu ChinaKey Laboratory of Advanced Technologies of Materials Ministry of Education School of Materials Science and Engineering Southwest Jiaotong University Chengdu ChinaKey Laboratory of Advanced Technologies of Materials Ministry of Education School of Materials Science and Engineering Southwest Jiaotong University Chengdu ChinaCorresponding author.; Key Laboratory of Advanced Technologies of Materials Ministry of Education School of Materials Science and Engineering Southwest Jiaotong University Chengdu ChinaKey Laboratory of Advanced Technologies of Materials Ministry of Education School of Materials Science and Engineering Southwest Jiaotong University Chengdu ChinaKey Laboratory of Advanced Technologies of Materials Ministry of Education School of Materials Science and Engineering Southwest Jiaotong University Chengdu ChinaKey Laboratory of Advanced Technologies of Materials Ministry of Education School of Materials Science and Engineering Southwest Jiaotong University Chengdu ChinaRefining the second phase is an effective approach to enhancing the strength and toughness of metallic materials. This paper adopts a novel composite thermomechanical processing technique (pre-annealing, semi-solid isothermal treatment, and post double extrusion) to fabricate a high strength-ductility Al-4.5 wt% Cu binary alloy via the spheroidization and nano-crystallization of the primary phase (Al2Cu). The resulting room-temperature tensile strength, yield strength, and elongation reached 450 MPa, 339 MPa, and 17.3 %. The combined effects of dual nanoparticle (i.e. broken nanoparticles and precipitated nanoparticles) strengthening and grain boundary strengthening are identified as the direct reasons for the enhanced strength. The uniformly alternated coarse and fine grain regions in the bimodal grain structure can coordinate deformation, and the dispersed spherical phase can weaken stress concentration, which are important factors for high plasticity. This work offers new insights for developing high-strength ductility hypoeutectic Al-Cu alloys.http://www.sciencedirect.com/science/article/pii/S0264127525000954Al-Cu alloySemisolid isothermal treatmentHot deformationMicrostructureMechanical properties |
| spellingShingle | Yunfeng Hu Mojia Li Jiaheng Li Yingbo Zhang Dongdi Yin Ying Zeng Hui Chen Nanoparticle-bands enabled strength-ductility synergy in wrought Al-Cu alloys Materials & Design Al-Cu alloy Semisolid isothermal treatment Hot deformation Microstructure Mechanical properties |
| title | Nanoparticle-bands enabled strength-ductility synergy in wrought Al-Cu alloys |
| title_full | Nanoparticle-bands enabled strength-ductility synergy in wrought Al-Cu alloys |
| title_fullStr | Nanoparticle-bands enabled strength-ductility synergy in wrought Al-Cu alloys |
| title_full_unstemmed | Nanoparticle-bands enabled strength-ductility synergy in wrought Al-Cu alloys |
| title_short | Nanoparticle-bands enabled strength-ductility synergy in wrought Al-Cu alloys |
| title_sort | nanoparticle bands enabled strength ductility synergy in wrought al cu alloys |
| topic | Al-Cu alloy Semisolid isothermal treatment Hot deformation Microstructure Mechanical properties |
| url | http://www.sciencedirect.com/science/article/pii/S0264127525000954 |
| work_keys_str_mv | AT yunfenghu nanoparticlebandsenabledstrengthductilitysynergyinwroughtalcualloys AT mojiali nanoparticlebandsenabledstrengthductilitysynergyinwroughtalcualloys AT jiahengli nanoparticlebandsenabledstrengthductilitysynergyinwroughtalcualloys AT yingbozhang nanoparticlebandsenabledstrengthductilitysynergyinwroughtalcualloys AT dongdiyin nanoparticlebandsenabledstrengthductilitysynergyinwroughtalcualloys AT yingzeng nanoparticlebandsenabledstrengthductilitysynergyinwroughtalcualloys AT huichen nanoparticlebandsenabledstrengthductilitysynergyinwroughtalcualloys |