Effect of ultrasonic power on the microstructure and mechanical properties of TC4 alloy ultrasonically brazed joint using Zn filler

Author(s):  
Xuesong Liu ◽  
Zhengwei Li ◽  
Zhiwu Xu ◽  
Jiuchun Yan
2011 ◽  
Vol 197-198 ◽  
pp. 1524-1527 ◽  
Author(s):  
Hong Bo Dong ◽  
Xin Yang

The effects of heat treatment process on the microstructure and mechanical properties of TC4 alloy were investigated. The double shear and tensile tests were carried out by using the 12mm diameter standard specimens after solution treatment at 520°С for 1.5h and water quenching, followed by aging at 480-540°С for 8h. The microstructure and facture surface were analyzed using the equipment of metallurgical microscope and scanning electron microscopy. The results show that TC4 alloy show the best comprehensive performances after solution treatment at 940°С for 1.5h, aging at 520°С for 8h; the tensile specimens display a typical ductile fracture with oval dimples of various sizes; the microstructures with clear grain boundary and obvious lamellar structure are observed at room temperature. It indicates that the excellent comprehensive properties can be obtained by controlling the grain size of primary α phase and the morphology structure and amount of the secondary α phase at optimized aging temperature.


2014 ◽  
Vol 616 ◽  
pp. 275-279
Author(s):  
Qiang Guo Luo ◽  
Xue Shu Hu ◽  
Qiang Shen ◽  
Lian Meng Zhang

LY12/TC4 joints have wide applications in many industrial areas such as aerospace, nuclear and chemical industries. In the present study, TC4 alloy and LY12 alloy with and without aluminum thin film was produced under low temperature of 380 oC. The microstructure and mechanical properties of the joints were investigated. The addition of the Al thin interlayer had largely improved the interfacial microstructure and shear strength of the joints. The average shear strength of LY12/Al/TC4 joints was 64.3 MPa which was 2.5 times larger than the LY12/TC4 joints’ strength. The shear fracture mainly occurred on the interface of LY12 and TC4 from the XRD result of fracture surfaces.


2013 ◽  
Vol 46 ◽  
pp. 605-608 ◽  
Author(s):  
Fangfei Sui ◽  
Weimin Long ◽  
Shengxin Liu ◽  
Guanxing Zhang ◽  
Li Bao ◽  
...  

2018 ◽  
Vol 255 ◽  
pp. 195-203 ◽  
Author(s):  
Guangjie Feng ◽  
Zhuoran Li ◽  
Zhi Zhou ◽  
Yong Yang ◽  
Dusan P. Sekulic ◽  
...  

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