Impacts of diffusion brazing time on mechanical properties of Nicrofer 5520 superalloy joint by Ni-15Cr-3.7B filler metal

Nasajpour, Ali; Farzadi, A.; Mirsalehi, Seyyed Ehsan

doi:10.1007/s40194-023-01606-3

Weld World

2023

DOI: 10.1007/s40194-023-01606-3

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Impacts of diffusion brazing time on mechanical properties of Nicrofer 5520 superalloy joint by Ni-15Cr-3.7B filler metal

Ali Nasajpour,

A. Farzadi,

Seyyed Ehsan Mirsalehi

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2024

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Cited by 2 publications

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Transient Liquid Phase Bonding of ZGH451 Superalloy Fabricated by Directed Energy Deposition

Hou,

Qin,

Sun

et al. 2024

Adv Eng Mater

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ZGH451, a directionally solidified Ni‐based superalloy designed for additive manufacturing, has garnered significant attention in the realm of next‐generation turbine blades. Welding the ZGH451 superalloy is crucial for promoting its practical application. In this study, transient liquid phase (TLP) bonding is applied to weld ZGH451 superalloy produced through directed energy deposition. A Ni‐based interlayer alloy powder is developed and prepared via thermodynamic calculation, with the interlayer subsequently characterized using differential thermal analysis. TLP bonding is conducted at 1200 °C for 4 h. The influence of the preset gap on the joint microstructure and mechanical properties is examined. The microstructure of the TLP bonding joints comprises athermally solidified zones (ASZ), isothermally solidified zones, and diffusion‐affected zones. The ASZ width significantly increases with the growing preset gap. A preset gap not exceeding 100 μm enables complete isothermal solidification of the joints. Particularly, joints with a preset gap ranging from 0 to 30 μm demonstrate optimal reliability, exhibiting a tensile strength of up to 1375 MPa at room temperature, which is 12% higher than the room temperature strength of the base metal (BM), and a tensile strength of 983 MPa at 760 °C, surpassing 86% of the BM's strength at the same temperature.

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Transient Liquid Phase Bonding of ZGH451 Superalloy Fabricated by Directed Energy Deposition

Hou,

Qin,

Sun

et al. 2024

Adv Eng Mater

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Time-dependent effects in transient liquid phase bonding of 304L and Cp-Ti using an Ag-Cu interlayer

Vazirian,

Moshkbar Bakhshayesh,

Farzadi

2024

J. Cent. South Univ.

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Impacts of diffusion brazing time on mechanical properties of Nicrofer 5520 superalloy joint by Ni-15Cr-3.7B filler metal

Cited by 2 publications

References 40 publications

Transient Liquid Phase Bonding of ZGH451 Superalloy Fabricated by Directed Energy Deposition

Transient Liquid Phase Bonding of ZGH451 Superalloy Fabricated by Directed Energy Deposition

Time-dependent effects in transient liquid phase bonding of 304L and Cp-Ti using an Ag-Cu interlayer

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