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LI Juan, QIN Qingdong, LONG Qiong, ZHANG Yingzhe. Influence of the filler metals' forms on semi-solid pressure reaction brazing joints[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2019, 40(9): 139-144. DOI: 10.12073/j.hjxb.2019400250
Citation: LI Juan, QIN Qingdong, LONG Qiong, ZHANG Yingzhe. Influence of the filler metals' forms on semi-solid pressure reaction brazing joints[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2019, 40(9): 139-144. DOI: 10.12073/j.hjxb.2019400250
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Influence of the filler metals' forms on semi-solid pressure reaction brazing joints

  • 2011 Special Function Materials Collaborative Innovation Center of Guizhou Province, Guiyang, 550003, China;Key Laboratory of Light Metal Materials Processing Technology of Guizhou Province, Guiyang 550003, China

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  • Received Date: August 01, 2018
    Graphical Abstract
    • Abstract
  • 70% SiCp/Al composites were semi-solid pressure reaction brazed with the Al-Si-Mg-Cu-Ti filler metal in different forms, the connotation of the welding method was expounded, and the microstructures and properties of the joints were analyzed. The results indicated that the joints mainly contain Al matrix, dark gray ringed and massive Ti7Al5Si12 compound, and massive Ti phase when they were filled with pulverous filler metal; the joints mainly contained Al matrix and short clubbed Ti7Al5Si12 compound when they were filled with schistose filler metal. The bonding of interface was the main factor affecting the performance of the joint. The filler metal and the base material were fully combined during brazing when they were filled with powder filler metal, which provided many atomic diffusion channel at the interface of the joint, so that they were well combined without clear dividing line, the shear strength of the joint reached 92.1 MPa, and the fracture was ductile and brittle mixed fracture; There was clear dividing line at the interface when the filler metal was schistose, so that the shear strength of the joint was low, 43.9 MPa, and the fracture was brittle fracture.
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    • References (15)
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