Drastic Improvement in Dissimilar Aluminum-to-Steel Joint Strength by Combining Positive Roles of Silicon and Nickel Additions
Dissimilar welding of an aluminum (Al) alloy to steel is expected to be effective for weight reduction of automotive car bodies. In this study, an aluminum alloy 1050 sheet was welded to a nickel (Ni)-plated Fe sheet using a silicon (Si)-containing Al filler by gas tungsten arc welding. The effect o...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2023-01-01
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| Series: | Materials & Design |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S026412752201067X |
| _version_ | 1811175490459795456 |
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| author | Kiyoaki T. Suzuki Shun Omura Shun Tokita Yutaka S. Sato Yujiro Tatsumi |
| author_facet | Kiyoaki T. Suzuki Shun Omura Shun Tokita Yutaka S. Sato Yujiro Tatsumi |
| author_sort | Kiyoaki T. Suzuki |
| collection | DOAJ |
| description | Dissimilar welding of an aluminum (Al) alloy to steel is expected to be effective for weight reduction of automotive car bodies. In this study, an aluminum alloy 1050 sheet was welded to a nickel (Ni)-plated Fe sheet using a silicon (Si)-containing Al filler by gas tungsten arc welding. The effect of the simultaneous addition of Si and Ni on the Al/Fe joint strength associated with the microstructure of the intermetallic compound (IMC) layer was systematically examined. The addition of Si and Ni individually improved the Al/Fe joint strength by the reduction in the IMC layer thickness caused by the Si addition and the refinement of the IMC grains due to the Ni addition, respectively. The most effective improvement in the joint strength was achieved by the simultaneous addition of Si and Ni. The IMC layer at the Al/Fe interface with Si addition consisted of θ-Fe4Al13, η-Fe2Al5, and Al–Fe–Si ternary IMCs, while it changed to θ-Fe4Al13, η-Fe2Al5, and an Al–Fe–Ni ternary IMC after Ni was additionally added. This change in the phase as well as the thickness reduction and grain refinement of the IMC layer probably contributes to further improving the joint strength by the simultaneous addition of Si and Ni. |
| first_indexed | 2024-04-10T19:37:55Z |
| format | Article |
| id | doaj.art-a36a5fa6b5974d5da8f248cf452cefa1 |
| institution | Directory Open Access Journal |
| issn | 0264-1275 |
| language | English |
| last_indexed | 2024-04-10T19:37:55Z |
| publishDate | 2023-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Materials & Design |
| spelling | doaj.art-a36a5fa6b5974d5da8f248cf452cefa12023-01-30T04:11:54ZengElsevierMaterials & Design0264-12752023-01-01225111444Drastic Improvement in Dissimilar Aluminum-to-Steel Joint Strength by Combining Positive Roles of Silicon and Nickel AdditionsKiyoaki T. Suzuki0Shun Omura1Shun Tokita2Yutaka S. Sato3Yujiro Tatsumi4Department of Materials Processing, Graduate School of Engineering, Tohoku University, 6-6-02 Aramaki-aza-Aoba, Aoba-ku, Sendai, Miyagi 980-8579, Japan; Corresponding author.Department of Materials Processing, Graduate School of Engineering, Tohoku University, 6-6-02 Aramaki-aza-Aoba, Aoba-ku, Sendai, Miyagi 980-8579, JapanDepartment of Materials Processing, Graduate School of Engineering, Tohoku University, 6-6-02 Aramaki-aza-Aoba, Aoba-ku, Sendai, Miyagi 980-8579, JapanDepartment of Materials Processing, Graduate School of Engineering, Tohoku University, 6-6-02 Aramaki-aza-Aoba, Aoba-ku, Sendai, Miyagi 980-8579, JapanNippon Steel Corporation, 20-1 Shintomi, Futtsu, Chiba 293-8511, JapanDissimilar welding of an aluminum (Al) alloy to steel is expected to be effective for weight reduction of automotive car bodies. In this study, an aluminum alloy 1050 sheet was welded to a nickel (Ni)-plated Fe sheet using a silicon (Si)-containing Al filler by gas tungsten arc welding. The effect of the simultaneous addition of Si and Ni on the Al/Fe joint strength associated with the microstructure of the intermetallic compound (IMC) layer was systematically examined. The addition of Si and Ni individually improved the Al/Fe joint strength by the reduction in the IMC layer thickness caused by the Si addition and the refinement of the IMC grains due to the Ni addition, respectively. The most effective improvement in the joint strength was achieved by the simultaneous addition of Si and Ni. The IMC layer at the Al/Fe interface with Si addition consisted of θ-Fe4Al13, η-Fe2Al5, and Al–Fe–Si ternary IMCs, while it changed to θ-Fe4Al13, η-Fe2Al5, and an Al–Fe–Ni ternary IMC after Ni was additionally added. This change in the phase as well as the thickness reduction and grain refinement of the IMC layer probably contributes to further improving the joint strength by the simultaneous addition of Si and Ni.http://www.sciencedirect.com/science/article/pii/S026412752201067XGas tungsten arc weldingDissimilar weldingAluminum alloySteelIntermetallic compoundsMechanical properties |
| spellingShingle | Kiyoaki T. Suzuki Shun Omura Shun Tokita Yutaka S. Sato Yujiro Tatsumi Drastic Improvement in Dissimilar Aluminum-to-Steel Joint Strength by Combining Positive Roles of Silicon and Nickel Additions Materials & Design Gas tungsten arc welding Dissimilar welding Aluminum alloy Steel Intermetallic compounds Mechanical properties |
| title | Drastic Improvement in Dissimilar Aluminum-to-Steel Joint Strength by Combining Positive Roles of Silicon and Nickel Additions |
| title_full | Drastic Improvement in Dissimilar Aluminum-to-Steel Joint Strength by Combining Positive Roles of Silicon and Nickel Additions |
| title_fullStr | Drastic Improvement in Dissimilar Aluminum-to-Steel Joint Strength by Combining Positive Roles of Silicon and Nickel Additions |
| title_full_unstemmed | Drastic Improvement in Dissimilar Aluminum-to-Steel Joint Strength by Combining Positive Roles of Silicon and Nickel Additions |
| title_short | Drastic Improvement in Dissimilar Aluminum-to-Steel Joint Strength by Combining Positive Roles of Silicon and Nickel Additions |
| title_sort | drastic improvement in dissimilar aluminum to steel joint strength by combining positive roles of silicon and nickel additions |
| topic | Gas tungsten arc welding Dissimilar welding Aluminum alloy Steel Intermetallic compounds Mechanical properties |
| url | http://www.sciencedirect.com/science/article/pii/S026412752201067X |
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