Effect of casting process and Zr, V addition on microstructure and mechanical properties of Al–12Si-4.5Cu–2Ni alloy
The casting process, the type and content of microalloying elements have a significant effect on the microstructure and mechanical properties of Al–12Si-4.5Cu–2Ni alloy. The results showed that with the increase of Zr and V, the grain size and secondary dendrite arm spacing (SDAS) of the alloy decre...
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Elsevier
2024-03-01
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| Series: | Journal of Materials Research and Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785424001571 |
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| author | Jian Dong Jufu Jiang Ying Wang Minjie Huang Jingbo Cui Tianxiang Qin Lingbo Kong |
| author_facet | Jian Dong Jufu Jiang Ying Wang Minjie Huang Jingbo Cui Tianxiang Qin Lingbo Kong |
| author_sort | Jian Dong |
| collection | DOAJ |
| description | The casting process, the type and content of microalloying elements have a significant effect on the microstructure and mechanical properties of Al–12Si-4.5Cu–2Ni alloy. The results showed that with the increase of Zr and V, the grain size and secondary dendrite arm spacing (SDAS) of the alloy decreased. However, excessive Zr and V led to abnormal growth of the intermetallic phase, resulting in the separation phenomenon of the matrix. Compared with gravity casting, squeeze casting not only inhibited the segregation of alloying elements but also refined the size of the intermetallic phase. The mechanical properties of the alloy showed a trend of increasing first and then decreasing. When the content of Zr and V was 0.2, the Al–12Si-4.5Cu–2Ni alloy obtained the best mechanical properties. The ultimate tensile strength, yield strength and elongation were 261.4 MPa, 150.2 MPa and 1.93 %, respectively. The (AlSi)3(ZrV), stacking faults and dislocations in the alloy significantly improved the mechanical properties. The disappearance of pores and the refinement of microstructure elevated the elongation of the alloy, while the dotted intermetallic phase accelerated the initiation of microcracks, leading to a decrease in elongation. |
| first_indexed | 2024-03-08T09:27:52Z |
| format | Article |
| id | doaj.art-6d2a2f815fa94acb9334db3e7d4352ba |
| institution | Directory Open Access Journal |
| issn | 2238-7854 |
| language | English |
| last_indexed | 2024-04-24T20:05:38Z |
| publishDate | 2024-03-01 |
| publisher | Elsevier |
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| series | Journal of Materials Research and Technology |
| spelling | doaj.art-6d2a2f815fa94acb9334db3e7d4352ba2024-03-24T06:57:27ZengElsevierJournal of Materials Research and Technology2238-78542024-03-012914281440Effect of casting process and Zr, V addition on microstructure and mechanical properties of Al–12Si-4.5Cu–2Ni alloyJian Dong0Jufu Jiang1Ying Wang2Minjie Huang3Jingbo Cui4Tianxiang Qin5Lingbo Kong6School of Materials Science and Engineering, Harbin Institute of Technology, Harbin, 150001, PR ChinaSchool of Materials Science and Engineering, Harbin Institute of Technology, Harbin, 150001, PR China; Corresponding author.School of Mechatronics Engineering, Harbin Institute of Technology, Harbin, 150001, PR China; Corresponding author.School of Materials Science and Engineering, Harbin Institute of Technology, Harbin, 150001, PR ChinaSchool of Materials Science and Engineering, Harbin Institute of Technology, Harbin, 150001, PR ChinaSchool of Materials Science and Engineering, Harbin Institute of Technology, Harbin, 150001, PR ChinaSchool of Materials Science and Engineering, Harbin Institute of Technology, Harbin, 150001, PR ChinaThe casting process, the type and content of microalloying elements have a significant effect on the microstructure and mechanical properties of Al–12Si-4.5Cu–2Ni alloy. The results showed that with the increase of Zr and V, the grain size and secondary dendrite arm spacing (SDAS) of the alloy decreased. However, excessive Zr and V led to abnormal growth of the intermetallic phase, resulting in the separation phenomenon of the matrix. Compared with gravity casting, squeeze casting not only inhibited the segregation of alloying elements but also refined the size of the intermetallic phase. The mechanical properties of the alloy showed a trend of increasing first and then decreasing. When the content of Zr and V was 0.2, the Al–12Si-4.5Cu–2Ni alloy obtained the best mechanical properties. The ultimate tensile strength, yield strength and elongation were 261.4 MPa, 150.2 MPa and 1.93 %, respectively. The (AlSi)3(ZrV), stacking faults and dislocations in the alloy significantly improved the mechanical properties. The disappearance of pores and the refinement of microstructure elevated the elongation of the alloy, while the dotted intermetallic phase accelerated the initiation of microcracks, leading to a decrease in elongation.http://www.sciencedirect.com/science/article/pii/S2238785424001571Al-12Si-4.5Cu–2Ni alloyMicroalloyingCalculated phase diagramsMicrostructureMechanical properties |
| spellingShingle | Jian Dong Jufu Jiang Ying Wang Minjie Huang Jingbo Cui Tianxiang Qin Lingbo Kong Effect of casting process and Zr, V addition on microstructure and mechanical properties of Al–12Si-4.5Cu–2Ni alloy Journal of Materials Research and Technology Al-12Si-4.5Cu–2Ni alloy Microalloying Calculated phase diagrams Microstructure Mechanical properties |
| title | Effect of casting process and Zr, V addition on microstructure and mechanical properties of Al–12Si-4.5Cu–2Ni alloy |
| title_full | Effect of casting process and Zr, V addition on microstructure and mechanical properties of Al–12Si-4.5Cu–2Ni alloy |
| title_fullStr | Effect of casting process and Zr, V addition on microstructure and mechanical properties of Al–12Si-4.5Cu–2Ni alloy |
| title_full_unstemmed | Effect of casting process and Zr, V addition on microstructure and mechanical properties of Al–12Si-4.5Cu–2Ni alloy |
| title_short | Effect of casting process and Zr, V addition on microstructure and mechanical properties of Al–12Si-4.5Cu–2Ni alloy |
| title_sort | effect of casting process and zr v addition on microstructure and mechanical properties of al 12si 4 5cu 2ni alloy |
| topic | Al-12Si-4.5Cu–2Ni alloy Microalloying Calculated phase diagrams Microstructure Mechanical properties |
| url | http://www.sciencedirect.com/science/article/pii/S2238785424001571 |
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