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研究了SiCp/A356复合材料非真空半固态搅拌钎焊过程。在一定的搅拌钎焊条件下,重点研究了钎料的固相率对接头的微观结构、线结合率和强度的影响规律。研究结果表明:在搅拌条件下,半固态钎料固相率对基体氧化膜的破碎有重要影响;随着钎料固相率的增加,接头界面的线结合率和接头的强度先增加后减小;在钎料固相率为60%时,接头界面线结合率和接头强度同时达到最大值,分别为91.2%和160MPa。
The non-vacuum semi-solid brazing process of SiCp / A356 composite was studied. Under certain conditions of stirring brazing, the influence of the solid fraction of brazing filler metal on the microstructure, wire bonding rate and strength of the joint was studied. The results show that the solid fraction of the semi-solid brazing filler metal has an important influence on the fracture of the matrix oxide film under the stirring conditions. With the increase of the solid content of the brazing filler metal, the wire bond ratio and the strength of the joint first increase and then decrease The solidification rate of brazing filler metal was 60%, the bonding rate and joint strength reached the maximum at 91.2% and 160 MPa, respectively.