Amorphous Ti-Cu-Zr-Nifi ller foils with low melting point of 1 133 K were synthesized using a melt-spinning method in argon atmosphere. A Ti2AlNb based alloy was brazed at 1 153-1 223 K for 600-3 000 s. The effects of brazing temperature (Tb) and time (tb) on the shear strength of the joints were investigated. The results showed that the joint strength was signifi cantly affected by the reaction layer thickness. The optimum brazing parameters can be determined as follows:Tb=1 173 K, and tb=600 s. The maximum tensile strength of the joint obtained can reach 260 MPa. Furthermore, the activation energyQand the growth velocityA0 of the reaction layer in the brazed joints were calculated to be 161.742 kJ/mol and 0.213 m2/s, respectively. The growth of the reaction layer (y) could be expressed by the expression:y2 =0.213exp(?19 454/Tb)tb.
参考文献
| [1] | Jiasheng Zou;Zhiguo Jiang;Qizhang Zhao;Zheng Chen .Brazing of Si_3N_4with amorphous Ti_(40)Zr_(25)Ni_(15)Cu_(20)filler[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2009(1/2):155-160. |
| [2] | M. Singh;R. Asthana .Joining of zirconium diboride-based ultra high-temperature ceramic composites using metallic glass interlayers[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2007(0):153-162. |
| [3] | Jung G. Lee;Y.H. Choi;J.K. Lee .Low-temperature brazing of titanium by the application of a Zr-Ti-Ni-Cu-Be bulk metallic glass (BMG) alloy as a filler[J].Intermetallics,2010(1):70-73. |
| [4] | P. He;J.C. Feng;H. Zhou .Microstructure and strength of brazed joints of Ti_3Al-base alloy with TiZrNiCu filler metal[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2005(1/2):81-86. |
| [5] | Singh, M;Asthana, R;Shpargel, TP .Brazing of ceramic-matrix composites to Ti and Hastealloy using Ni-base metallic glass interlayers[J].Materials Science and Engineering. A, Structural Materials: Properties, Microstructure and Processing,2008(1/2):19-30. |
| [6] | Liu, HB;Zhang, LX;Wu, LZ;Liu, D;Feng, JC .Vacuum brazing of SiO2 glass ceramic and Ti-6Al-4V alloy using AgCuTi filler foil[J].Materials Science and Engineering. A, Structural Materials: Properties, Microstructure and Processing,2008(1/2):321-326. |
| [7] | Y.H. Liu;J.D. Hu;P. Shen;X. H. Han;J.C. Li .Microstructural and mechanical properties of jointed ZrO_2/Ti-6Al-4V alloy using Ti_33Zr_17Cu_50 amorphous brazing filler[J].Materials & design,2013(May):281-286. |
| [8] | Nandy T.K.;Banerjee D. .Creep of the orthorhombic phase based on the intermetallic Ti_2A1Nb[J].Intermetallics,2000(8):915-928. |
| [9] | Zhenglong Lei;Zhijun Dong;Yanbin Chen;Jian Zhang;Ruican Zhu .Microstructure and tensile properties of laser beam welded Ti-22Al-27Nb alloys[J].Materials & design,2013(Apr.):151-156. |
| [10] | Lei, Z.L.;Dong, Z.J.;Chen, Y.B.;Huang, L.;Zhu, R.C..Microstructure and mechanical properties of laser welded Ti-22Al-27Nb/TC4 dissimilar alloys[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2013:909-916. |
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