Penetration and microstructure of steel joints by ultrasonic-assisted gas metal arc welding

被引:4
|
作者
Vinh Tran-The Chung [1 ,2 ,3 ]
Thai Cong Nguyen [1 ,2 ]
Duy Khanh Bui [1 ,2 ]
Huu Loc Nguyen [1 ,2 ]
Anh Van Nguyen [4 ]
Thanh-Hai Nguyen [1 ,2 ]
机构
[1] Ho Chi Minh City Univ Technol HCMUT, Fac Mech Engn, 268 Ly Thuong Kiet St, Ho Chi Minh City 700000, Vietnam
[2] Viet Nam Natl Univ Ho Chi Minh City, Linh Trung Ward, Ho Chi Minh City 700000, Vietnam
[3] Ly Tu Trong Coll, 390 Hoang Van Thu St, Ho Chi Minh City 700000, Vietnam
[4] Cranfield Univ, Welding Engn & Laser Proc Ctr, Cranfield MK43 0AL, Beds, England
关键词
ultrasonic vibration; U-GMAW; penetration; hardness; microstructure; MECHANICAL-PROPERTIES; ALUMINUM-ALLOY; VIBRATION; AL; IMPROVEMENT;
D O I
10.35848/1347-4065/ac4d44
中图分类号
O59 [应用物理学];
学科分类号
摘要
This work investigates the application of ultrasonic vibration to steel joints formed by gas metal arc welding. Welding is done using a metal active gas welding source with welding current of 120-160 A, 0.8 mm diameter welding wire and 10 l min(-1) CO2 flow. The distance from the torch to the ultrasonic horn is 120 mm. Ultrasonic vibration most affects the weld when ultrasonic vibration position is 120 mm from torch and increases the penetration when welding speed is 190 (275) mm/min for a 5 mm thick (10 mm thick) plate. Moreover, weld width increases when welding speed is 190 mm min(-1) for 10 mm thick plate. Although ultrasonic vibration does not affect the hardness of welding zones, it modifies the microstructure of the diffusion and welding-pool zones.
引用
收藏
页数:6
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