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Journal of Materials Engineering and Performance

Erschienen in:

21.05.2020

Microstructure and Interfacial Evolution of Sintered NdFeB Permanent Magnet/Steel Joint Soldered with Zn-Sn Alloy

verfasst von: Cui Luo, Xiaoming Qiu, Yuxin Xu, Yuzhen Lu, Fei Xing

Erschienen in: Journal of Materials Engineering and Performance | Ausgabe 5/2020

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Abstract

Sintered NdFeB permanent magnets and steel were soldered successfully using Zn-Sn alloy. The effects of Sn content on the microstructure and mechanical properties of soldered joints were investigated. The results showed that the typical interfacial microstructure represented NdFeB/NdFe_5.5Zn(B) + ξ-FeZn₁₃/Zn + β-Sn/ξ-FeZn₁₃ + δ-FeZn₁₀ + Γ-Fe₃Zn₁₀/steel. With the addition of Sn, the thickness of the NdFe_5.5Zn(B) phase increased, while more β-Sn was observed in the soldering seam. The maximum shear strength reached 45.3 MPa with a Sn proportion of 6 wt.%, and excessive growth of the NdFe_5.5Zn(B) phase in the joints deteriorated the mechanical properties. The fracture morphology exhibited a ductile-to-brittle transition with the occurrence of interfacial fractures due to thick intermetallic compounds.

Vorheriger Artikel Isothermal Compression and Concomitant Dynamic Recrystallization Behavior of Ti-6.5Al-3.5Mo-1.5Zr-0.3Si Alloy with Initial Martensitic Microstructure

Nächster Artikel Resistance Spot Welding of Dissimilar Interstitial-Free and High-Strength Low-Alloy Steels

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Titel: Microstructure and Interfacial Evolution of Sintered NdFeB Permanent Magnet/Steel Joint Soldered with Zn-Sn Alloy
verfasst von: Cui Luo
Xiaoming Qiu
Yuxin Xu
Yuzhen Lu
Fei Xing
Publikationsdatum: 21.05.2020
Verlag: Springer US
Erschienen in: Journal of Materials Engineering and Performance / Ausgabe 5/2020
Print ISSN: 1059-9495
Elektronische ISSN: 1544-1024
DOI: https://doi.org/10.1007/s11665-020-04854-2

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