In situ synthesis of TiB whisker reinforcements in the joints of Al2O3/TC4 during brazing

Yang, Mujin; Lin, Tiesong; He, Peng; Huang, Yudong

doi:10.1016/j.msea.2011.01.035

Cited by 46 publications

(23 citation statements)

References 20 publications

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“…3 , which are all demonstrated to be Ti 2 (Cu,Al). Because Al atoms dissolve into brazing layer from Al 2 O 3 and Ti-6Al-4V alloy, and then interdissolve in Cu or Ti atoms [11]. The light gray phase B and dark phase D are Ti 2 Cu and Ti 3 Al.…”

Section: Resultsmentioning

confidence: 99%

Cu+TiB2 composite filler for brazing Al2O3 and Ti–6Al–4V alloy

Yang

Lin

2012

Journal of Alloys and Compounds

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Section: Resultsmentioning

confidence: 99%

Cu+TiB2 composite filler for brazing Al2O3 and Ti–6Al–4V alloy

Yang

Lin

2012

Journal of Alloys and Compounds

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“…20 Joints reinforced by TiB whiskers also showed high shear strength. 21 Carbon fibers have also been used to improve the mechanical performance and thermal conductivity of joints. 22 However, although many kinds of ceramic whiskers, such as aluminum borate whiskers and silicon carbide whiskers, 13,23 have been applied to reinforce various metals and alloys, they have not been reported in composite solders.…”

Section: Introductionmentioning

confidence: 99%

Microstructure and Mechanical Properties of Tin-Bismuth Solder Reinforced by Aluminum Borate Whiskers

Wang

Wei

et al. 2015

Journal of Elec Materi

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Tin-bismuth solder has emerged as a promising lead-free alternative to tinlead solder, especially for low-temperature packaging applications. However, the intrinsic brittleness of tin-bismuth solder alloy, aggravated by the coarse bismuth-rich phase and the thick interfacial intermetallic layer, notably limits the mechanical performance of the bonded joints. In this work, the microstructure and mechanical performance of solder joints were improved by adding 3.2 vol.% aluminum borate whiskers to the tin-bismuth solder alloy. This whisker-reinforced composite solder was fabricated through a simple process. Typically, 25-lm to 75-lm tin-bismuth particles were mixed with a small amount of aluminum borate whiskers with diameter of 0.5 lm to 1.5 lm and length of 5 lm to 15 lm. The addition of whiskers restrained the formation of coarse brittle bismuth-rich phase and decreased the lamellar spacing from 0.84 lm to 7.94 lm to the range of 0.22 lm to 1.80 lm. Moreover, the growth rate of the interfacial intermetallic layer during the remelting treatment decreased as well. The joint shear strength increased from 19.4 MPa to 24.7 MPa, and only declined by 4.9% (average, À5.9% to 15.8%) after the tenth remelting, while the shear strength of the joint without whiskers declined by 31.5% (average, 10.1-44.1%). The solder alloy was reinforced because of their high strength and high modulus and also the refinement effect on the solder alloy microstructure.

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“…24,25 Additionally, it was reported that the in situ synthesized reinforcements originated from brazing process have outstanding reinforcing effects due to their fine size, uniform distribution, and favorable cohesion with the matrix. [26][27][28][29] Song et al 27 reported that the formation of TiN and Ti 5 Si 3 particles in the brazing seam by introducing 3 wt.% Si 3 N 4 particles into Ag-Cu-Ti brazing alloy led to 85% improvement in the shear strength of the TiAl/Si 3 N 4 joints. He et al 28 investigated the strength of TC4/Al 2 O 3 joints with the in situ formed TiB whiskers as reinforcements.…”

Section: Introductionmentioning

confidence: 99%

“…[26][27][28][29] Song et al 27 reported that the formation of TiN and Ti 5 Si 3 particles in the brazing seam by introducing 3 wt.% Si 3 N 4 particles into Ag-Cu-Ti brazing alloy led to 85% improvement in the shear strength of the TiAl/Si 3 N 4 joints. He et al 28 investigated the strength of TC4/Al 2 O 3 joints with the in situ formed TiB whiskers as reinforcements. The maximum joint strength reached 77.9 MPa, which is twice as high as the joint without TiB whiskers.…”

Section: Introductionmentioning

confidence: 99%