Microstructure, Mechanical Properties, and Fatigue Resistance of an Al-Mg-Sc-Zr Alloy Fabricated by Wire Arc Additive Manufacturing
Al-Mg alloy wire modified by Sc and Zr additions was used to prepare a high-strength, non-heat-treated Al-Mg alloy component by wire arc additive manufacturing (WAAM) technology in the present work, and the microstructure, mechanical properties, fatigue resistance, as well as their anisotropies of t...
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2025-01-01
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| author | Lingpeng Zeng Jiqiang Chen Tao Li Zhanglong Tuo Zuming Zheng Hanlin Wu |
| author_facet | Lingpeng Zeng Jiqiang Chen Tao Li Zhanglong Tuo Zuming Zheng Hanlin Wu |
| author_sort | Lingpeng Zeng |
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| description | Al-Mg alloy wire modified by Sc and Zr additions was used to prepare a high-strength, non-heat-treated Al-Mg alloy component by wire arc additive manufacturing (WAAM) technology in the present work, and the microstructure, mechanical properties, fatigue resistance, as well as their anisotropies of the deposited Al-Mg-Sc-Zr alloy component were studied. The results show that the microstructure of the as-deposited alloy is composed of fine equiaxed grains with an average grain size of around 8 μm, and nanosized Al<sub>3</sub>(Sc, Zr) particles (~5 nm) are also evident. The tensile properties and fatigue resistance of the deposited alloy showed significant anisotropy, and the performance of the traveling direction is always better than that of the deposition direction. The ultimate strength, yield strength, elongation, and critical fatigue life (cycles) of the as-deposited alloy along the traveling direction (0° direction) are 362 ± 7 MPa, 244 ± 3 MPa and 24.8 ± 0.3%, and 1.72 × 10<sup>5</sup>, respectively. The presence of weak bonding areas and high tensile (positive) residual stress between the deposition layers deteriorate the tensile properties and critical fatigue life of the sample along the deposition direction. |
| format | Article |
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| institution | Kabale University |
| issn | 2075-4701 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | MDPI AG |
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| spelling | doaj-art-ae7e7368112548c598e56809b835301a2025-01-24T13:41:27ZengMDPI AGMetals2075-47012025-01-011513110.3390/met15010031Microstructure, Mechanical Properties, and Fatigue Resistance of an Al-Mg-Sc-Zr Alloy Fabricated by Wire Arc Additive ManufacturingLingpeng Zeng0Jiqiang Chen1Tao Li2Zhanglong Tuo3Zuming Zheng4Hanlin Wu5School of Material Science and Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, ChinaSchool of Material Science and Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, ChinaSchool of Material Science and Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, ChinaSchool of Material Science and Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, ChinaSchool of Material Science and Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, ChinaSchool of Material Science and Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, ChinaAl-Mg alloy wire modified by Sc and Zr additions was used to prepare a high-strength, non-heat-treated Al-Mg alloy component by wire arc additive manufacturing (WAAM) technology in the present work, and the microstructure, mechanical properties, fatigue resistance, as well as their anisotropies of the deposited Al-Mg-Sc-Zr alloy component were studied. The results show that the microstructure of the as-deposited alloy is composed of fine equiaxed grains with an average grain size of around 8 μm, and nanosized Al<sub>3</sub>(Sc, Zr) particles (~5 nm) are also evident. The tensile properties and fatigue resistance of the deposited alloy showed significant anisotropy, and the performance of the traveling direction is always better than that of the deposition direction. The ultimate strength, yield strength, elongation, and critical fatigue life (cycles) of the as-deposited alloy along the traveling direction (0° direction) are 362 ± 7 MPa, 244 ± 3 MPa and 24.8 ± 0.3%, and 1.72 × 10<sup>5</sup>, respectively. The presence of weak bonding areas and high tensile (positive) residual stress between the deposition layers deteriorate the tensile properties and critical fatigue life of the sample along the deposition direction.https://www.mdpi.com/2075-4701/15/1/31Al alloywire arc additive manufacturingmicrostructuremechanical propertiesfatigue resistance |
| spellingShingle | Lingpeng Zeng Jiqiang Chen Tao Li Zhanglong Tuo Zuming Zheng Hanlin Wu Microstructure, Mechanical Properties, and Fatigue Resistance of an Al-Mg-Sc-Zr Alloy Fabricated by Wire Arc Additive Manufacturing Metals Al alloy wire arc additive manufacturing microstructure mechanical properties fatigue resistance |
| title | Microstructure, Mechanical Properties, and Fatigue Resistance of an Al-Mg-Sc-Zr Alloy Fabricated by Wire Arc Additive Manufacturing |
| title_full | Microstructure, Mechanical Properties, and Fatigue Resistance of an Al-Mg-Sc-Zr Alloy Fabricated by Wire Arc Additive Manufacturing |
| title_fullStr | Microstructure, Mechanical Properties, and Fatigue Resistance of an Al-Mg-Sc-Zr Alloy Fabricated by Wire Arc Additive Manufacturing |
| title_full_unstemmed | Microstructure, Mechanical Properties, and Fatigue Resistance of an Al-Mg-Sc-Zr Alloy Fabricated by Wire Arc Additive Manufacturing |
| title_short | Microstructure, Mechanical Properties, and Fatigue Resistance of an Al-Mg-Sc-Zr Alloy Fabricated by Wire Arc Additive Manufacturing |
| title_sort | microstructure mechanical properties and fatigue resistance of an al mg sc zr alloy fabricated by wire arc additive manufacturing |
| topic | Al alloy wire arc additive manufacturing microstructure mechanical properties fatigue resistance |
| url | https://www.mdpi.com/2075-4701/15/1/31 |
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