Study on the microstructure and properties of the transition region of IN625/TC4 bimetallic structure by laser melting deposition with Cu interlayer

Wang Wenbo; Xu Nuo; Xu Guojian; Jing Zhicheng; Zhang Guoyu; Zhao Xue; Xiang Zhuo

doi:10.7513/j.issn.1004-7638.2023.04.007

Volume 44 Issue 4

Aug. 2023

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Wang Wenbo, Xu Nuo, Xu Guojian, Jing Zhicheng, Zhang Guoyu, Zhao Xue, Xiang Zhuo. Study on the microstructure and properties of the transition region of IN625/TC4 bimetallic structure by laser melting deposition with Cu interlayer[J]. IRON STEEL VANADIUM TITANIUM, 2023, 44(4): 48-54. doi: 10.7513/j.issn.1004-7638.2023.04.007

Citation:

Wang Wenbo, Xu Nuo, Xu Guojian, Jing Zhicheng, Zhang Guoyu, Zhao Xue, Xiang Zhuo. Study on the microstructure and properties of the transition region of IN625/TC4 bimetallic structure by laser melting deposition with Cu interlayer[J]. IRON STEEL VANADIUM TITANIUM, 2023, 44(4): 48-54. doi: 10.7513/j.issn.1004-7638.2023.04.007

Citation:

Wang Wenbo, Xu Nuo, Xu Guojian, Jing Zhicheng, Zhang Guoyu, Zhao Xue, Xiang Zhuo. Study on the microstructure and properties of the transition region of IN625/TC4 bimetallic structure by laser melting deposition with Cu interlayer[J]. IRON STEEL VANADIUM TITANIUM, 2023, 44(4): 48-54. doi: 10.7513/j.issn.1004-7638.2023.04.007

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Study on the microstructure and properties of the transition region of IN625/TC4 bimetallic structure by laser melting deposition with Cu interlayer

doi: 10.7513/j.issn.1004-7638.2023.04.007

1.
School of Materials Science and Engineering, Shenyang University of Technology, Shenyang 110870, Liaoning, China
2.
Center for Faculty Development and Educational Assessment (Institute of Higher Education), Shenyang University of Technology, Shenyang 110870, Liaoning, China

Received Date: 2023-03-21
Publish Date: 2023-08-30

Abstract

Abstract

The bimetallic structure composed of IN625 nickel-based high-temperature alloy with excellent high-temperature properties and lightweight and high-strength TC4 titanium alloy has broad application prospects in the aerospace field. However, due to the large differences in physical and chemical properties of the two metals, the direct fabrication of IN625/TC4 bimetallic structure inevitably results in the formation of metallurgical defects such as cracks in the transition region, so the effective connection of IN625/TC4 bimetallic structure has been a hot spot and a difficult area of research in the industry. In this work, laser melting deposition technology was used to prepare IN625/TC4 bimetallic structure without cracks and other metallurgical defects by adding Cu interlayer, and studied the microstructure and mechanical properties of the transition region. The results show that the phase composition inside the transition region of the IN625/TC4 bimetallic structure deposited by laser melting with Cu interlayer is mainly γ-Ni, γ-Cu, (Cr, Mo), Ti₂Cu, TiCu, TiNi₃, α-Ti and β-Ti. Tensile results at room temperature indicate that the tensile strength of the IN625/TC4 bimetallic structure with Cu interlayer is about 228.9 MPa. The fracture location is near the Cu/IN625 transition region, and the fracture morphology shows quasi-dissociative fracture characteristics.
- high-temperature alloy,
- titanium alloy,
- bimetallic structures,
- laser melting deposition,
- Cu interlayer,
- tensile strength

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References(19)

References

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