Structure and mechanical properties of CP Ti and Ti-6Al-4V alloy brazed joints with Ti-base amorphous filler metals.

忠男, 恩沢; 暁男, 鈴村; 明玩, 高

doi:10.2207/qjjws.5.205

Cited by 15 publications

(3 citation statements)

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“…The brazing is conducted in vacuum high frequency brazier, the brazing parameters are: vacuum degree is 0.1 Pa; welding temperature is 800˚C; heating current is 25 A; heating time is 15 s; holding time is 15 s; cooling to room temperature is in furnace. The sample made along the axis of the welded sample is etched with the solution of 3 ml HF + 6 ml HNO 3 + 100 ml H 2 O [11], the effect of the content of Sn on the microstructure of the joint is analyzed by using Olympus GX-71 metallurgical microscope, the shear strength of the joints is tested by WE-100 universal testing machine and the effect of the content of Sn on the strength is analyzed. Figure 1 shows the X-ray diffraction spectrum patterns of Ti-Zr-Cu-Ni-Sn brazing fillers.…”

Section: Design Of Experimentsmentioning

confidence: 99%

Adding Sn on the Performance of Amorphous Brazing Fillers Applied to Brazing TA2 and Q235

Cui¹,

Zhai²,

Xu³

et al. 2014

JSEMAT

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Amorphous filler Ti-Zr-Cu-Ni with better performance and higher melting point than the α → β phase transition temperature 882.5˚C of TA2, is appropriate for joining TC and TB titanium alloys but not for TA titanium alloys, with which the ductility of the joined base metal TA2 gets down. In this paper, Sn is added into Ti-Zr-Cu-Ni filler to reduce its melting temperature then to satisfy the joining temperature requirement, and the effects of the content of Sn on the microstructure of the alloy and brazing performance are investigated. The results show that, the Ti-Zr-Cu-Ni-Sn brazing foils still possess amorphous structure; the melting point of fillers is reducing with the increase of the Sn content; the joint gap that formed during brazing TA2 and Q235 using Ti-Zr-Cu-Ni-Sn foils is fully filled with continuous compact surface and smooth uniform fillet; the shear strength of the joint is raising with the increase of Sn content in brazing fillers and the strength reaches to 112 MPa when Sn content is 3%; adding more Sn, more brittle intermetallic compounds TiFe and TiFe2 are gathering to form cluster and the shear strength of the joint is reducing; the shear fracture always occurs in the center of the seam.

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Section: Design Of Experimentsmentioning

confidence: 99%

Adding Sn on the Performance of Amorphous Brazing Fillers Applied to Brazing TA2 and Q235

Cui¹,

Zhai²,

Xu³

et al. 2014

JSEMAT

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show abstract

“…Because amorphous material has the advantages of homogeneous composition, narrow melting temperature range and high diffusion feature, the welding quality can be improved dramatically. There is no segregation in brazing zone so that the welding joint is of high hardness and corrosion resistance [13][14]. In a word, amorphous solder is a promising material in many fields [15][16].…”

Section: Introductionmentioning

confidence: 99%

Research on Laser Brazing Applying Al-Based Amorphous Ribbon

Song

2016

MSF

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The Al-based amorphous ribbons were prepared by the copper roller melt spinning method, and then the laser brazing was carried out between aluminum alloy and aluminum alloy. Subsequently, the Micro Vickers Hardness Tester, Metallographic Microscope, Scanning Electron Microscopy (SEM) and X-ray Diffraction (XRD) were used to characterize the hardness, morphology, micro structure and composition distribution of the welded joints respectively, so as to analyze the structural characteristic, performance characteristic and binding effect of the matrix metal joints. The results indicate that the prepared Al-based amorphous ribbon is of amorphous structure, the soldering point between aluminum alloy and aluminum alloy is well-connected and the joint’s hardness is identical to that of the base metal. The connection between the metal sheets can be achieved by using Al-based amorphous ribbon as solder, which could provide concrete references for the development and application of amorphous brazing in various fields.

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“…[4][5][6][7][8][9][10] However, very few studies have focused on brazing using titanium in the form of an alloy powder by the gas atomization process. Moreover, the brazing processes reported were mostly carried out by induction heating as a rapid heating process.…”

Section: Introductionmentioning

confidence: 99%

Brazing and Interfacial Reaction of Commercially Pure Titanium with Ti-Zr-Based Filler Metals

Matsu¹,

Miyazawa

Nishi

et al. 2007

Mater. Trans.

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In the last 50 years, brazing of titanium and/or titanium alloys has been studied and a number of filler metals have been developed. Commercially pure titanium was brazed with commercially produced atomized brazing filler metal powder in an industrial vacuum furnace. TiZr-based alloy filler metals were utilized in this study. We investigated the joint strength by shear strength tests and by observing the microstructure at the brazed joint. The shear strength tests revealed that the joint strength of Ti-Zr-based alloy filler metals for a brazing time of 60 min was approximately 300 MPa, which is almost the same as the base metal strength. Zirconium diffused into the base metal, thereby transforming from -Ti to -Ti for a temperature below the -transformation temperature of the base metal, and the diffusion of nickel and copper into the base metal was accelerated. The brazing filler metal remained at the brazed joint for a brazing time of 10 min; however, for an increased brazing time, it disappeared because of isothermal solidification. It is understood that isothermal solidification was mainly controlled by the diffusion of zirconium.

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Structure and mechanical properties of CP Ti and Ti-6Al-4V alloy brazed joints with Ti-base amorphous filler metals.

Cited by 15 publications

References 0 publications

Adding Sn on the Performance of Amorphous Brazing Fillers Applied to Brazing TA2 and Q235

Adding Sn on the Performance of Amorphous Brazing Fillers Applied to Brazing TA2 and Q235

Research on Laser Brazing Applying Al-Based Amorphous Ribbon

Brazing and Interfacial Reaction of Commercially Pure Titanium with Ti-Zr-Based Filler Metals

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