Microstructure and Mechanical Properties of Deep Penetration Laser Welding Joints in Steel/Aluminum with Si Powder Addition

2018 ◽  
Vol 54 (1) ◽  
pp. 58
Author(s):  
Dianwu ZHOU
Keyword(s):  
Mechanical Properties ◽  
Laser Welding ◽  
Deep Penetration ◽  
Microstructure And Mechanical Properties ◽  
Powder Addition ◽  
Welding Joints

Analysis of Microstructure and Mechanical Properties of 2A97T3 Al-Li Alloy Fiber Laser Welding Joint

2015 ◽  
Vol 1095 ◽  
pp. 677-683 ◽  
Author(s):  
Zhen Yi ◽  
Li Chen ◽  
En Guang He ◽  
Ming Chang
Keyword(s):  
Mechanical Properties ◽  
Laser Welding ◽  
Fiber Laser ◽  
Base Metal ◽  
Columnar Dendrite ◽  
Fiber Laser Welding ◽  
Columnar Crystal ◽  
Welding Joint ◽  
Microstructure And Mechanical Properties ◽  
Welding Joints

2A97 Al-Li alloy with good comprehensive performance is a new type of Al-Li alloys in our country,in order to meet the ever-increased long-term requirements of aerospace,aviation and armament industries,microstructure and mechanical properties of 2A97Al-Li alloy fiber laser welding joint were analyzed in this paper.The results show that:2A97 Al-Li alloy laser welding joints from welding fusion line to the center of welding seam are non-dendritic equiaxed grain zone,columnar crystal zone,columnar dendrite zone,equiaxed dendrite zone.Precipitates θ,T2 and T1 are probably exited in FZ,hardness of the center of FZ is the lowest.Yield strength of welding joints are about 70% of base metal,tensile strength are approximately 63% of the base metal.

Study on the Microstructure and Mechanical Properties of Welding Joints of 7A05 Aluminum Alloy by FSW

2014 ◽  
Vol 496-500 ◽  
pp. 110-113
Author(s):  
Dong Gao Chen ◽  
Jin He Liu ◽  
Zhi Hua Ma ◽  
Wu Lin Yang
Keyword(s):  
Mechanical Properties ◽  
Aluminum Alloy ◽  
Friction Stir Welding ◽  
Welding Speed ◽  
Welded Joint ◽  
Optical Microscope ◽  
Nugget Zone ◽  
Friction Stir ◽  
Microstructure And Mechanical Properties ◽  
Welding Joints

The7A05 aluminum alloy of the 10mm thickness was welded by the friction stir welding. The microstructure and mechanical Properties of the welded joint was researched by the optical microscope, etc. The results showed: the microstructure of the weld nugget zone and the thermal mechanically affected zone were refined as the welding speed increasing when the rotate speed is constant. As the welding speed increasing the strength of extension of the welded joint is increasing at first and then stable basically. but the yield strength had no obvious change.

Sign in / Sign up

Export Citation Format

Share Document