Microstructure and bonding strength of titanium-to-stainless steel joints brazed using a Zr–Ti–Ni–Cu–Be amorphous filler alloy

Lee, Jung G.; Lee, J. K.; Hong, Sun-Seok; Lee, M. K.; Rhee, Chang Kyu

doi:10.1007/s10853-010-4923-4

Cited by 27 publications

(9 citation statements)

References 18 publications

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“…Consequently, a wide spectrum of alternative joining techniques, particularly the solid state ones specific to this dissimilar joining couple, has been developed. [2][3][4][5][6][7][8][9][10][11][12][13] Of the techniques available, diffusion bonding has been demonstrated to be a feasible approach to eradicate the problems associated with fusion welding and has emerged as a near net shape forming processing. 1,[8][9][10] The main hindrance to achieve a high strength diffusion bonding of Ti to SS is the fundamental brittleness owing to the formation of intermetallic compounds (IMCs) at the interfaces of the joint.…”

Section: Introductionmentioning

confidence: 99%

Microstructure and mechanical properties of diffusion bonded titanium/304 stainless steel joint with pure Ag interlayer

Deng

Sheng

Huang

et al. 2013

Science and Technology of Welding and Joining

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In the present study, diffusion bonding of commercially pure titanium to 304 stainless steel (SS) using a pure Ag interlayer was carried out. It is found that the pure Ag interlayer can effectively block the interdiffusion and interaction between Ti and SS. The resultant joints were composed of Ti substrate, Ti-Ag solid solution, TiAg intermetallic phase, the remnant Ag interlayer and SS. Upon tensile loading, fracture took place through the remnant Ag interlayer, indicating that the TiAg intermetallic phase exhibits no detrimental effect on the strength of the joints. A maximum tensile strength of 421 MPa was achieved, which is notably improved compared with previous results. Furthermore, extensive dimples were observed on the fracture surfaces, clearly indicating that the joints were ductile in nature.

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Section: Introductionmentioning

confidence: 99%

Microstructure and mechanical properties of diffusion bonded titanium/304 stainless steel joint with pure Ag interlayer

Deng

Sheng

Huang

et al. 2013

Science and Technology of Welding and Joining

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“…Thus, many previous researchers sought the proper metal or alloy to insert as an interlayer in order to eliminate or relieve the influence of intermetallic compounds 4 – 7 . The frequently used interlayer metals are Cu 8 , 9 , Ni 10 – 13 , Ag 14 , Al 15 , as well as other more complex alloys 3 , 16 – 18 . The selection of the interlayer material depends on its metallurgical properties with Ti and Fe, especially if the interlayer material can form the intermetallic phase with Ti and Fe in the cooling process after experiencing high-temperature solution annealing.…”

Section: Introductionmentioning

confidence: 99%

Investigation on Ti6Al4V-V-Cr-Fe-SS316 Multi-layers Metallic Structure Fabricated by Laser 3D Printing

Liou

Newkirk

et al. 2017

Sci Rep

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Joining titanium alloy and stainless steel is becoming an urgent need since their outstanding mechanical properties can be utilized integratedly. However, direct fusion joining of Ti6Al4V to SS316 can cause brittle Ti-Fe intermetallics which compromise join bonds’ mechanical properties. In this research, Laser 3D Printing was applied to explore a new Ti6Al4V to SS316 multi-metallic structure. A novel filler transition route was introduced (Ti6Al4V → V → Cr → Fe → SS316) to avoid the Ti-Fe intermetallics. Two experimental cases were performed for comparison to evaluate this novel route’s effect. In the first case, SS316 layer was directly deposited on Ti6Al4V substrate by laser 3D printing, but the sample cracked in the printing process. Then fracture morphology, phase identification, and micro-hardness were analyzed. In the second case, a multi-metallic structure was fabricated via laser 3D printing following the transition route. Microstructure characterization and composition distribution were analyzed via scanning electron microscope(SEM) and energy dispersive spectrometry(EDS). x-ray diffraction(XRD) tests demonstrated the intermetallics were effectively avoided following the transition route. Vickers hardness number(VHN) showed no significant hard brittle phases in the sample. Comparing with directly depositing SS316 on Ti6Al4V, the usage of the novel transition route can eliminate the intermetallics effectively. These research results are good contributions in joining titanium alloy and stainless steel.

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“…[11][12][13][14][15][16][17][18] The development of a suitable brazing technique essentially incorporates an in-depth understanding of the interfacial chemical reactions and identifying the mechanisms of these reactions, which can be used to optimize the bonding conditions, and hence achieve desirable properties of the joints. Recently, Shiue et al [19] have demonstrated the formation of layers of intermetallic compounds during reactive wetting of Ag-28Cu braze alloy with Ti substrate.…”

Section: Introductionmentioning

confidence: 99%

Microstructure and Interfacial Reactions During Vacuum Brazing of Stainless Steel to Titanium Using Ag-28 pct Cu Alloy

Laik

Shirzadi

Sharma

et al. 2014

Metall Mater Trans A

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Microstructural evolution and interfacial reactions during vacuum brazing of grade-2 Ti and 304L-type stainless steel (SS) using eutectic alloy Ag-28 wt pct Cu were investigated. A thin Ni-depleted zone of a-Fe(Cr, Ni) solid solution formed on the SS-side of the braze zone (BZ). Cu from the braze alloy, in combination with the dissolved Fe and Ti from the base materials, formed a layer of ternary compound s 2 , adjacent to Ti in the BZ. In addition, four binary intermetallic compounds, Cu 3 Ti 2 , Cu 4 Ti 3 , CuTi and CuTi 2 formed as parallel contiguous layers in the BZ. The unreacted Ag solidified as islands within the layers of Cu 3 Ti 2 and Cu 4 Ti 3 . Formation of an amorphous phase at certain locations in the BZ could be revealed. The b-Ti(Cu) layer, formed due to diffusion of Cu into Ti-based material, transformed to an a-Ti + CuTi 2 eutectoid with lamellar morphology. Tensile test showed that the brazed joints had strength of 112 MPa and failed at the BZ. The possible sequence of events that led to the final microstructure and the mode of failure of these joints were delineated.

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Microstructure and bonding strength of titanium-to-stainless steel joints brazed using a Zr–Ti–Ni–Cu–Be amorphous filler alloy

Cited by 27 publications

References 18 publications

Microstructure and mechanical properties of diffusion bonded titanium/304 stainless steel joint with pure Ag interlayer

Microstructure and mechanical properties of diffusion bonded titanium/304 stainless steel joint with pure Ag interlayer

Investigation on Ti6Al4V-V-Cr-Fe-SS316 Multi-layers Metallic Structure Fabricated by Laser 3D Printing

Microstructure and Interfacial Reactions During Vacuum Brazing of Stainless Steel to Titanium Using Ag-28 pct Cu Alloy

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