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

Jie Cui,Yahui Wang,Jinfeng Xu,Qiuya Zhai,Jianlin Ye

doi:10.4236/jsemat.2014.46038

Jie Cui, Yahui Wang + Show 3 more

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https://doi.org/10.4236/jsemat.2014.46038

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Abstract

Amorphous filler Ti-Zr-Cu-Ni with better performance and higher melting point than the α → β phase transition temperature 882.5d 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.

Highlights

Titanium alloys have high specific strength, low density, good thermostability, tenacity, thermal conductivityHow to cite this paper: Cui, J., Zhai, Q.Y., Xu, J.F., Wang, Y.H. and Ye, J.L. (2014) Adding Sn on the Performance of Amorphous Brazing Fillers Applied to Brazing TA2 and Q235
The brazing fillers still process typical amorphous diffraction peaks when the content of Sn rises to 7%
It can be seen that the amorphous structure of the brazing fillers cannot be changed by adding a bit Sn, but tend to be crystallized when the content increases rapidly

Summary

Introduction

Titanium alloys have high specific strength, low density, good thermostability, tenacity, thermal conductivityHow to cite this paper: Cui, J., Zhai, Q.Y., Xu, J.F., Wang, Y.H. and Ye, J.L. (2014) Adding Sn on the Performance of Amorphous Brazing Fillers Applied to Brazing TA2 and Q235. Titanium alloys have high specific strength, low density, good thermostability, tenacity, thermal conductivity. Common engineering material mild steel Q235 has excellent performance but reasonable price. The advantages of these two materials above-mentioned can be made full use of by connecting, which has high practical values and good economical benefits. It is hard to connect titanium and mild steel for the great difference in their physical and chemical properties. Among them, brazing has important application in aerospace field with low welding temperature, simple equipment and process, which is applied to the connection of dissimilar metals titanium and steel and is available for the weld of precision components with complex structure and thin-wall

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