Research on the reliability of inertial friction welded joints between 21-4N and 4Cr9Si2

Jihui Deng; Kailin Zhu; Wenbo Cui; Yuanzhi Zhu

doi:10.1117/12.3015254

6 February 2024 Research on the reliability of inertial friction welded joints between 21-4N and 4Cr9Si2

Jihui Deng, Kailin Zhu, Wenbo Cui, Yuanzhi Zhu

Proceedings Volume 12979, Ninth International Conference on Energy Materials and Electrical Engineering (ICEMEE 2023); 129793B (2024) https://doi.org/10.1117/12.3015254
Event: 9th International Conference on Energy Materials and Electrical Engineering (ICEMEE 2023), 2023, Guilin, China

Abstract

The 21-4N austenitic steel and the 4Cr9Si2 martensite steel were joined successfully by using inertia friction. In the process of inertia friction, the 4Cr9Si2 matrix on the welding surface precipitates along the 21-4N austenite grain boundary, forming the "bite" effect, which promotes metallurgical bonding. The peak temperature of inertia friction welding interface can reach above 1487K, and recrystallization, element diffusion and grain refinement exist in the weld center zone. In the tensile test, the fracture of the welded sample is in the 21-4N shear deformation zone, the maximum tensile strength is 1057MPa, and the elongation is about 12.5%. The 21-4N and 4Cr9Si2 dissimilar metals can be welded by inertia friction welding to obtain a joint structure with excellent performance.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Jihui Deng, Kailin Zhu, Wenbo Cui, and Yuanzhi Zhu "Research on the reliability of inertial friction welded joints between 21-4N and 4Cr9Si2", Proc. SPIE 12979, Ninth International Conference on Energy Materials and Electrical Engineering (ICEMEE 2023), 129793B (6 February 2024); https://doi.org/10.1117/12.3015254

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