Pressure effect on Al alloy cast behaviour: microstructures and mechanical properties

2004 ◽  
Vol 20 (5/6) ◽  
pp. 345 ◽  
Author(s):  
G. Costanza ◽  
F. Quadrini ◽  
M.E. Tata
Keyword(s):  
Mechanical Properties ◽  
Pressure Effect ◽  
Al Alloy ◽  
Microstructures And Mechanical Properties ◽  
Alloy Cast

The Microstructures and Mechanical Properties of Al-5Mg-1.4Mn Alloy Cast under Near-Rapid Cooling

2016 ◽  
pp. 195-200
Author(s):  
Y. L. Liu ◽  
G. R. Huang ◽  
L. Luo ◽  
L. Zhang ◽  
Y. H. Zhao ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Rapid Cooling ◽  
Microstructures And Mechanical Properties ◽  
Alloy Cast

Research on Microstructures and Mechanical Properties of Fiber Laser Welding of A7N01 Al-Alloy

2017 ◽  
Vol 734 ◽  
pp. 310-318 ◽  
Author(s):  
Yi Shuai Jiang ◽  
Shang Lei Yang ◽  
Yan Wang ◽  
Zhi Hua Yang
Keyword(s):  
Mechanical Properties ◽  
Fiber Laser ◽  
Base Metal ◽  
Welded Joint ◽  
Weld Interface ◽  
Al Alloy ◽  
Fiber Laser Welding ◽  
Welding Joint ◽  
Microstructures And Mechanical Properties ◽  
Welding Metal

A7N01 aluminum alloy with the thickness of 10mm is welded using fiber laser with filler wire, the microstructures and mechanical properties of the welding joints are observed and analyzed by microhardness and tensile testers, SEM. The results show that the crystalline morphology of the welding metal is equiaxial as-cast. the columnar crystals exist in the fusion zone next to the weld interface. A softening zone with the width of 1.6 mm is formed in the heat affected zone. Micro-hardness of the welding joint distributes uniformly, the highest is in base metal which is 110 HV and the lowest is in the welding joint which is 73 HV. The tensile strength of the welded joint is 281 MPa, the strength coefficient reached 70.6%. the fatigue strengths of the laser welded joint and the base metal are investigated. The results show that the conditional fatigue strength (107) of the laser welded joint can reach up to 63.6% of that of the base metal. there are fatigue striations generated during the steady-state region.

Effects of Environment Temperatures on the Microstructures and Mechanical Properties for Welding Joints of A5083-H111 Alloy

2014 ◽  
Vol 936 ◽  
pp. 1701-1706
Author(s):  
Chuang Gang Wang ◽  
Yan Liu ◽  
Xiao Min Wang ◽  
Guo Qing Gou ◽  
Hui Chen
Keyword(s):  
Mechanical Properties ◽  
Welded Joint ◽  
Welding Parameters ◽  
Al Alloy ◽  
Welding Temperature ◽  
Precipitated Phase ◽  
Environment Temperature ◽  
Welding Joints ◽  
Microstructures And Mechanical Properties ◽  
Welded Seam

In this paper, A5083-H111 aluminum alloy was welded under different environment temperatures. Microstructures and mechanical properties were analyzed. The results show that the grain size of precipitated phase in welded seam deceased and the content increased with the increase of environment temperature. The hardness was the lowest in welded seam. The hardness increased with the distance away from welded centre. The hardness of welding zone of welded joint was generally low below 0 °C. The strength and toughness were higher at welding temperature above 0°C than that welded below 0°C. If the welding parameters were well controlled, A5083-H111 Al alloy can be welded at temperature ranging from-20°C to 40°C with relative humidity of 50%.

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