Significance of α-Al cellular matrix in tensile behavior and work-hardening of additive manufactured AlSi10Mg alloy
The cellular structure, surrounded by an interconnected Si-rich eutectic network, is prevalent in Al–Si alloys produced through additive manufacturing (AM). While the role of cellular boundaries in mechanical behaviour is well-documented, the impact of the α-Al cellular matrix’s mechanical propertie...
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Taylor & Francis Group
2025-12-01
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| Series: | Virtual and Physical Prototyping |
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| Online Access: | https://www.tandfonline.com/doi/10.1080/17452759.2024.2449189 |
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| author | Shuoqing Shi Yufan Zhao Xin Lin Haoyuan Deng Lv Zhao Guangyao He Weidong Huang |
| author_facet | Shuoqing Shi Yufan Zhao Xin Lin Haoyuan Deng Lv Zhao Guangyao He Weidong Huang |
| author_sort | Shuoqing Shi |
| collection | DOAJ |
| description | The cellular structure, surrounded by an interconnected Si-rich eutectic network, is prevalent in Al–Si alloys produced through additive manufacturing (AM). While the role of cellular boundaries in mechanical behaviour is well-documented, the impact of the α-Al cellular matrix’s mechanical properties on tensile behaviour remains insufficiently explored. This study methodically examines the characteristics of the α-Al cellular matrix and its contributions to tensile behaviour in AlSi10Mg alloy samples fabricated using laser-directed energy deposition (L-DED). Findings reveal that the α-Al cellular matrix contributes approximately 80% to the yield strength of the L-DED AlSi10Mg alloy. The back stress and effective stress generated by the cellular matrix contribute to the flow stress, significantly enhancing the work-hardening capability, thereby achieving greater strength and elongation. Intriguingly, augmenting the strength of the cellular matrix not only boosts the tensile strength but also postpones the onset of damage nucleation, thus enhancing ductility. Our research highlights the pivotal role of the cellular matrix in tensile behaviour, providing crucial insights that enable precise manipulation of microstructures and properties in AM-produced Al–Si alloys to meet diverse application demands. The significance revealed in this work is expected to be also applicable to other alloys that commonly have cellular structures in AM process. |
| format | Article |
| id | doaj-art-e03c81a995e04acea1f325e4025a245b |
| institution | Kabale University |
| issn | 1745-2759 1745-2767 |
| language | English |
| publishDate | 2025-12-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | Virtual and Physical Prototyping |
| spelling | doaj-art-e03c81a995e04acea1f325e4025a245b2025-01-08T21:07:55ZengTaylor & Francis GroupVirtual and Physical Prototyping1745-27591745-27672025-12-0120110.1080/17452759.2024.2449189Significance of α-Al cellular matrix in tensile behavior and work-hardening of additive manufactured AlSi10Mg alloyShuoqing Shi0Yufan Zhao1Xin Lin2Haoyuan Deng3Lv Zhao4Guangyao He5Weidong Huang6State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi’an, People’s Republic of ChinaState Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi’an, People’s Republic of ChinaState Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi’an, People’s Republic of ChinaState Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi’an, People’s Republic of ChinaDepartment of Mechanics, School of Aerospace Engineering, Huazhong University of Science and Technology, Wuhan, People’s Republic of ChinaState Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi’an, People’s Republic of ChinaState Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi’an, People’s Republic of ChinaThe cellular structure, surrounded by an interconnected Si-rich eutectic network, is prevalent in Al–Si alloys produced through additive manufacturing (AM). While the role of cellular boundaries in mechanical behaviour is well-documented, the impact of the α-Al cellular matrix’s mechanical properties on tensile behaviour remains insufficiently explored. This study methodically examines the characteristics of the α-Al cellular matrix and its contributions to tensile behaviour in AlSi10Mg alloy samples fabricated using laser-directed energy deposition (L-DED). Findings reveal that the α-Al cellular matrix contributes approximately 80% to the yield strength of the L-DED AlSi10Mg alloy. The back stress and effective stress generated by the cellular matrix contribute to the flow stress, significantly enhancing the work-hardening capability, thereby achieving greater strength and elongation. Intriguingly, augmenting the strength of the cellular matrix not only boosts the tensile strength but also postpones the onset of damage nucleation, thus enhancing ductility. Our research highlights the pivotal role of the cellular matrix in tensile behaviour, providing crucial insights that enable precise manipulation of microstructures and properties in AM-produced Al–Si alloys to meet diverse application demands. The significance revealed in this work is expected to be also applicable to other alloys that commonly have cellular structures in AM process.https://www.tandfonline.com/doi/10.1080/17452759.2024.2449189Additive manufacturingAlSi10Mg alloycellular matrixstress partitionmechanical behaviour |
| spellingShingle | Shuoqing Shi Yufan Zhao Xin Lin Haoyuan Deng Lv Zhao Guangyao He Weidong Huang Significance of α-Al cellular matrix in tensile behavior and work-hardening of additive manufactured AlSi10Mg alloy Virtual and Physical Prototyping Additive manufacturing AlSi10Mg alloy cellular matrix stress partition mechanical behaviour |
| title | Significance of α-Al cellular matrix in tensile behavior and work-hardening of additive manufactured AlSi10Mg alloy |
| title_full | Significance of α-Al cellular matrix in tensile behavior and work-hardening of additive manufactured AlSi10Mg alloy |
| title_fullStr | Significance of α-Al cellular matrix in tensile behavior and work-hardening of additive manufactured AlSi10Mg alloy |
| title_full_unstemmed | Significance of α-Al cellular matrix in tensile behavior and work-hardening of additive manufactured AlSi10Mg alloy |
| title_short | Significance of α-Al cellular matrix in tensile behavior and work-hardening of additive manufactured AlSi10Mg alloy |
| title_sort | significance of α al cellular matrix in tensile behavior and work hardening of additive manufactured alsi10mg alloy |
| topic | Additive manufacturing AlSi10Mg alloy cellular matrix stress partition mechanical behaviour |
| url | https://www.tandfonline.com/doi/10.1080/17452759.2024.2449189 |
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