Additively manufactured fine-grained Al–Fe–Cu-Sc-Zr alloy with resistance to brittleness under high temperature
Existing additively manufactured aluminum alloys exhibit a sharp decrease in yield strength at moderate temperatures (200°C-400 °C), failing to meet the high-temperature resistance required in the complex service environments of aerospace applications. In this paper, an Al-2.5Fe–2Cu-0.6Sc-0.3Zr allo...
Saved in:
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2024-11-01
|
| Series: | Journal of Materials Research and Technology |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785424026322 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1846107744238567424 |
|---|---|
| author | Qianyu Shi Jibing Chen Junsheng Chen Yueting Wang Xizhen Xia Ruidi Li |
| author_facet | Qianyu Shi Jibing Chen Junsheng Chen Yueting Wang Xizhen Xia Ruidi Li |
| author_sort | Qianyu Shi |
| collection | DOAJ |
| description | Existing additively manufactured aluminum alloys exhibit a sharp decrease in yield strength at moderate temperatures (200°C-400 °C), failing to meet the high-temperature resistance required in the complex service environments of aerospace applications. In this paper, an Al-2.5Fe–2Cu-0.6Sc-0.3Zr alloy material was designed and formed by laser powder bed fusion (L-PBF) technology. The optimal composition ratio was obtained by comparing the formed structures and properties, and then the phase composition, microstructure, precipitation distribution and mechanical properties were characterized and analyzed at high temperature. The result shows that the alloy's primary precipitate phases are Al6Fe (Al23CuFe4) and L12-Al3(Sc, Zr) at nano scale. Adding Zr and Sc, the thermal stability of Al6Fe is enhanced, delaying its transformation to the θ-Al13Fe4 phase and refining the particle size. The Al23CuFe4 phase, stabilized thermodynamically by substituting of Cu for Al atoms in the orthorhombic structure (oC28), also contributes to the stabilization of the Al6Fe phase. Moreover, This aluminum alloy obtained a yield strength of 449 MPa at room temperature and a yield strength of 142 MPa at 300 °C. In addition, it also shows excellent brittleness resistance under high temperature, which is better than most L-PBF aluminum alloys reported so far. These findings offer valuable insights for the future development of aluminum-based alloys with heat-resistant performance, and promising strategies for addressing particle coarsening under high temperature and intermediate-temperature brittleness. |
| format | Article |
| id | doaj-art-d4afc9e9a22b4611a3cf790321d29c99 |
| institution | Kabale University |
| issn | 2238-7854 |
| language | English |
| publishDate | 2024-11-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj-art-d4afc9e9a22b4611a3cf790321d29c992024-12-26T08:55:34ZengElsevierJournal of Materials Research and Technology2238-78542024-11-013373107324Additively manufactured fine-grained Al–Fe–Cu-Sc-Zr alloy with resistance to brittleness under high temperatureQianyu Shi0Jibing Chen1Junsheng Chen2Yueting Wang3Xizhen Xia4Ruidi Li5School of Mechanical Engineering, Wuhan Polytechnic University, Wuhan, Hubei, 430023, ChinaSchool of Mechanical Engineering, Wuhan Polytechnic University, Wuhan, Hubei, 430023, China; Corresponding author.School of Mechanical Engineering, Wuhan Polytechnic University, Wuhan, Hubei, 430023, ChinaPowder Metallurgy Research Institute, Central South University, Changsha, Hunan, 410083, China; State Key Laboratory of Powder Metallurgy, Central South University, Changsha, Hunan, 410083, ChinaPowder Metallurgy Research Institute, Central South University, Changsha, Hunan, 410083, China; State Key Laboratory of Powder Metallurgy, Central South University, Changsha, Hunan, 410083, ChinaPowder Metallurgy Research Institute, Central South University, Changsha, Hunan, 410083, China; State Key Laboratory of Powder Metallurgy, Central South University, Changsha, Hunan, 410083, ChinaExisting additively manufactured aluminum alloys exhibit a sharp decrease in yield strength at moderate temperatures (200°C-400 °C), failing to meet the high-temperature resistance required in the complex service environments of aerospace applications. In this paper, an Al-2.5Fe–2Cu-0.6Sc-0.3Zr alloy material was designed and formed by laser powder bed fusion (L-PBF) technology. The optimal composition ratio was obtained by comparing the formed structures and properties, and then the phase composition, microstructure, precipitation distribution and mechanical properties were characterized and analyzed at high temperature. The result shows that the alloy's primary precipitate phases are Al6Fe (Al23CuFe4) and L12-Al3(Sc, Zr) at nano scale. Adding Zr and Sc, the thermal stability of Al6Fe is enhanced, delaying its transformation to the θ-Al13Fe4 phase and refining the particle size. The Al23CuFe4 phase, stabilized thermodynamically by substituting of Cu for Al atoms in the orthorhombic structure (oC28), also contributes to the stabilization of the Al6Fe phase. Moreover, This aluminum alloy obtained a yield strength of 449 MPa at room temperature and a yield strength of 142 MPa at 300 °C. In addition, it also shows excellent brittleness resistance under high temperature, which is better than most L-PBF aluminum alloys reported so far. These findings offer valuable insights for the future development of aluminum-based alloys with heat-resistant performance, and promising strategies for addressing particle coarsening under high temperature and intermediate-temperature brittleness.http://www.sciencedirect.com/science/article/pii/S2238785424026322Additive manufacturingLaser powder bed fusionAluminum alloyAnti-brittlenessHigh temperature |
| spellingShingle | Qianyu Shi Jibing Chen Junsheng Chen Yueting Wang Xizhen Xia Ruidi Li Additively manufactured fine-grained Al–Fe–Cu-Sc-Zr alloy with resistance to brittleness under high temperature Journal of Materials Research and Technology Additive manufacturing Laser powder bed fusion Aluminum alloy Anti-brittleness High temperature |
| title | Additively manufactured fine-grained Al–Fe–Cu-Sc-Zr alloy with resistance to brittleness under high temperature |
| title_full | Additively manufactured fine-grained Al–Fe–Cu-Sc-Zr alloy with resistance to brittleness under high temperature |
| title_fullStr | Additively manufactured fine-grained Al–Fe–Cu-Sc-Zr alloy with resistance to brittleness under high temperature |
| title_full_unstemmed | Additively manufactured fine-grained Al–Fe–Cu-Sc-Zr alloy with resistance to brittleness under high temperature |
| title_short | Additively manufactured fine-grained Al–Fe–Cu-Sc-Zr alloy with resistance to brittleness under high temperature |
| title_sort | additively manufactured fine grained al fe cu sc zr alloy with resistance to brittleness under high temperature |
| topic | Additive manufacturing Laser powder bed fusion Aluminum alloy Anti-brittleness High temperature |
| url | http://www.sciencedirect.com/science/article/pii/S2238785424026322 |
| work_keys_str_mv | AT qianyushi additivelymanufacturedfinegrainedalfecusczralloywithresistancetobrittlenessunderhightemperature AT jibingchen additivelymanufacturedfinegrainedalfecusczralloywithresistancetobrittlenessunderhightemperature AT junshengchen additivelymanufacturedfinegrainedalfecusczralloywithresistancetobrittlenessunderhightemperature AT yuetingwang additivelymanufacturedfinegrainedalfecusczralloywithresistancetobrittlenessunderhightemperature AT xizhenxia additivelymanufacturedfinegrainedalfecusczralloywithresistancetobrittlenessunderhightemperature AT ruidili additivelymanufacturedfinegrainedalfecusczralloywithresistancetobrittlenessunderhightemperature |