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Journal of Materials Engineering and Performance

Erschienen in:

23.10.2018

Reducing Intermetallic Compounds of Mg/Al Joint in Friction Stir Lap Welding

verfasst von: Z. L. Liu, K. Yang, S. D. Ji

Erschienen in: Journal of Materials Engineering and Performance | Ausgabe 11/2018

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Abstract

To reduce intermetallic compounds (IMCs) of Al₁₂Mg₁₇ and Al₃Mg₂ in Mg/Al friction stir lap welding joint, pin tip was plunged into the lower sheet at a small distance. Results showed that at a fixed welding speed of 50 mm/min, sound joints were obtained using rotating speeds from 750 to 500 rpm, and the IMCs zones were rather small. Cracks easily appeared inside IMCs inside onion ring and at lap interface. Therefore, reducing the IMC was beneficial for reducing the crack. Joint lap shear stress firstly increased and then decreased with decrease in the rotating speed. The maximum shear stress of 50.2 MPa was attained at a rotating speed of 500 rpm because of reduced IMC.

Vorheriger Artikel The Effects of Low Frequency on the Microstructure and Mechanical Properties of High-Strength Al-Mg Aluminum Alloys by Wire and Double-Pulsed Arc Additive Manufacturing

Nächster Artikel Laser Powder Deposition Parametric Optimization and Property Development for Ti-6Al-4V Alloy

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Titel: Reducing Intermetallic Compounds of Mg/Al Joint in Friction Stir Lap Welding
verfasst von: Z. L. Liu
K. Yang
S. D. Ji
Publikationsdatum: 23.10.2018
Verlag: Springer US
Erschienen in: Journal of Materials Engineering and Performance / Ausgabe 11/2018
Print ISSN: 1059-9495
Elektronische ISSN: 1544-1024
DOI: https://doi.org/10.1007/s11665-018-3705-z

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