Transient liquid phase bonding of 304 stainless steel using a Co-based interlayer

Sadeghian, Mohammad; Ekrami, A.; Jamshidi, Rasoul

doi:10.1080/13621718.2017.1302180

Cited by 13 publications

(7 citation statements)

References 29 publications

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“…As a result the width of ISZ widened as the diffusion of the MPD element grows. This observation is in line with other studies [15,28,29]. The DAZ which composed of second-phase precipitates distributed in the BM was formed as a result of solid-state diffusion and segregation of interlayer elements into the BM.…”

Section: Effect Of Bonding Time On Joint Microstructuresupporting

confidence: 93%

Transient Liquid Phase Bonding of 17-4-PH Stainless Steel Using Conventional and Two-Step Heating Process

2020

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Conventional and two-step heating transient liquid phase bonding (TLP) experiments of martensitic precipitation hardening stainless steel 17-4-PH were studied employing AMS 4777 braze filler at temperature of 1050 °C for different times (15 to 90 min) to accomplish the ideal brazing condition. The effect of TLP methods and bonding conditions on the microstructure and shear bond strength was investigated. The critical bonding time for isothermal solidification in conventional and two-step heating TLP was 60 min and 45 min, respectively. The microstructure of isothermal solidification zone consisted of Ni-rich solid solution phase. Eutectic constituents Cr-rich boride and Ni 3 Si were formed in the joint centerline in the athermally solidified zone. In the conventional method planar interface was formed, however in TLP bonding under temperature gradient non-planar interface was formed, high angel grain boundaries merged at the end of isothermal solidification and homogenous bond was produced. Due to the decrease of athermally solidified zone the shear strength increased by increasing the holding time and when using the two-step heating process because of better metal to metal contact, the shear strength was higher. The optimum condition was a temperature gradient TLP in 60 min bonding time, which led to shear strength of 435 MPa.

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Section: Effect Of Bonding Time On Joint Microstructuresupporting

confidence: 93%

Transient Liquid Phase Bonding of 17-4-PH Stainless Steel Using Conventional and Two-Step Heating Process

2020

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“…In another work of the same research group from Sharif University of Technology [105] that used the same bonding conditions and discusses the corrosion behavior of these joints, even 83% of the base materials strength could be accomplished. The research group further reported on shear strength of diffusion bonded (1150 • C, 30 min, 0.2 MPa) 304 stainless steel plates using a 40 µm Co-based interlayer [106]. With this set-up a shear strength of up to 90% of the base material was achieved.…”

Section: Resultsmentioning

confidence: 99%

Diffusion Bonding and Transient Liquid Phase (TLP) Bonding of Type 304 and 316 Austenitic Stainless Steel—A Review of Similar and Dissimilar Material Joints

Alhazaa

Haneklaus

2020

Metals

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Similar and dissimilar material joints of AISI grade 304 (1.4301) and AISI grade 316 (1.4401) austenitic stainless steel by solid state diffusion bonding and transient liquid phase (TLP) bonding are of interest to academia and industry alike. Appropriate bonding parameters (bonding temperature, bonding time, and bonding pressure) as well as suitable surface treatments, bonding atmosphere (usually high vacuum or protective gas) and interlayers are paramount for successful bonding. The three main parameters (temperature, time, and pressure) are interconnected in a strong non-linear way making experimental data important. This work reviews the three main parameters used for solid state diffusion bonding, TLP bonding and to a smaller degree hot isostatic pressing (HIP) of AISI grade 304 and AISI grade 316 austenitic stainless steel to the aforementioned materials (similar joints) as well as other materials, namely commercially pure titanium, Ti-6A-4V, copper, zircaloy and other non-ferrous metals and ceramic materials (dissimilar joints).

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“…The research proposed here is a novel multi-scale lattice structure manufacturing platform that will utilize the dip-coating science for delivering the interlayer particles in hard to reach places and liquid-bridge the gap for TLP bonding. Since its invention in the early 1970s, much work has been performed on optimizing TLP bonding parameters, a list that includes temperature, holding time 74 , pressure, base materials 75 , interlayer composition 76,77 , MPD types, diffusion rate 78 , and microstructure development 79,80 . However, faying surfaces are commonly assumed to be semi-infinite flat substrates and the interlayer material is generally applied in the form of thin foil [81][82][83] , fine powder (with or without binder) 84,85 , paste 86 , electroplate 87,88 and, sputter 89,90 .…”

Section: Discussionmentioning

confidence: 99%

3D metal lattice structure manufacturing with continuous rods

Khoda

Ahsan

Shovon

et al. 2021

Sci Rep

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In this paper, a new possibility of fabricating a metal lattice structure with a continuous rod is demonstrated. A multi-layer, periodic, and aperiodic lattice structure can be manufactured with a continuous thin rod by bending it with a repetitive pattern. However, joining their nodes are challenging and an important problem to solve. This paper is investigating the joining of nodes in a loose lattice structure by delivering materials through the dipping process. Both liquid state (epoxy) and solid-state (inorganic particles) joining agents are considered for polymer–metal and metal–metal bonding, respectively. Liquid Carrier Systems (LCS) are designed considering their rheological behavior. We found 40% solid loading with the liquid carrier system provides sufficient solid particles transfer at dipping and join the lattice node using transient liquid phase bonding (TLP). 3D metal lattice structures are constructed, and their mechanical properties are investigated. The lattice structure shows comparable strength even with smaller relative density (< 10%). The strength and elastic modulus of all the fabricated samples decreases with the increase in cell size, which is consistent with the traditional wisdom.

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Transient liquid phase bonding of 304 stainless steel using a Co-based interlayer

Cited by 13 publications

References 29 publications

Transient Liquid Phase Bonding of 17-4-PH Stainless Steel Using Conventional and Two-Step Heating Process

Transient Liquid Phase Bonding of 17-4-PH Stainless Steel Using Conventional and Two-Step Heating Process

Diffusion Bonding and Transient Liquid Phase (TLP) Bonding of Type 304 and 316 Austenitic Stainless Steel—A Review of Similar and Dissimilar Material Joints

3D metal lattice structure manufacturing with continuous rods

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