The effect of vacuum suction casting on the microstructure and corrosion behavior of aluminium alloy 2017

2019 ◽  
Vol 240 ◽  
pp. 23-32 ◽  
Author(s):  
Zbigniew Szklarz ◽  
Halina Krawiec ◽  
Łukasz Rogal
Keyword(s):  
Aluminium Alloy ◽  
Corrosion Behavior ◽  
Vacuum Suction ◽  
Suction Casting

Mechanical and Corrosion Behavior of Pure Aluminium Added Friction Stir Weld Joint of Aluminium Alloy

2019 ◽  
Vol 821 ◽  
pp. 327-333
Author(s):  
Sunil Sinhmar ◽  
Dheerendra Kumar Dwivedi
Keyword(s):  
Friction Stir Welding ◽  
Aluminium Alloy ◽  
Corrosion Behavior ◽  
Weld Joint ◽  
Second Phase ◽  
Pure Aluminium ◽  
Nugget Zone ◽  
Friction Stir ◽  
Aluminium Addition ◽  
Aluminium Strip

Friction stir welding (FSW) of AA2014 aluminium alloy was performed by sandwiching pure aluminium (Al) in the form of strip between the abutting surfaces. Mechanical and corrosion behavior of weld joint with and without pure aluminium addition was compared. Friction stir welding was carried out at rotational speed of 931 rpm and traverse speed of 41 mm/min. Pure aluminium strip of 1 mm thickness was used for incorporating Al in weld nugget zone. Microstructure analysis was carried out using optical microscope and FESEM with energy dispersive spectroscopy (EDS). Microhardness and tensile testing were performed on the weld joints. Corrosion behavior was investigated using electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization (Tafel) test. FESEM analysis was performed before and after corrosion test. Traces of pure aluminium strip were observed in the microstructure. The incorporated strip was found not to be uniformly distributed in the nugget zone. Pure aluminium addition reduced the extent of formation of the second phase particle in the nugget zone as compared to the normal FSW joint i.e. without Al addition. This metallurgical homogeneity resulted in better corrosion resistance of the Al added weld joint than the normal FSW joint.

Microstructure evolution and microhardness of TiAl based alloy blade by vacuum suction casting

Vacuum ◽  
2019 ◽  
Vol 163 ◽  
pp. 186-193 ◽  
Author(s):  
Xi-Cong Ye ◽  
Ke-Qiang Xiao ◽  
Ru-Xin Cao ◽  
Haihua Wu ◽  
Guang-wei Zhao ◽  
...  
Keyword(s):  
Microstructure Evolution ◽  
Vacuum Suction ◽  
Suction Casting

The Study on TiAl Based Alloy Blade Casting Structure by Bottom Pouring Vacuum Suction Casting

2013 ◽  
Vol 442 ◽  
pp. 44-47
Author(s):  
Xi Cong Ye ◽  
Wei Guang Zhao
Keyword(s):  
Grain Size ◽  
Fine Structure ◽  
Grain Growth ◽  
Vacuum Suction ◽  
Suction Casting ◽  
Average Grain Size ◽  
B2 Phase ◽  
Blade Casting ◽  
Forced Cooling ◽  
Undercooling Degree

In this paper, the bottom pouring vacuum suction casting is used, and the TiAl-based alloy blade with good face quality was obtained. Bottom pouring vacuum suction casting obtained Ti-47Al-5Nb-0.5Si alloy fine structure, the average grain size is 20um or less. Metal permanent forced cooling effect increases the undercooling degree, and the formation of Ti5Si3 can hinder the grain growth and the formation of nucleation particles, and Nb elements are conducive to the formation of B2 phase, and these three reasons refined the grain size.

scholarly journals Effect of Anodization on the corrosion behavior of Aluminium Alloy in HCl acid and NaOH

2012 ◽  
Vol 2 (4) ◽  
pp. 38-42 ◽  
Author(s):  
Madakson P. B ◽  
Malik I. A ◽  
Laminu S. K ◽  
Bashir I. G.
Keyword(s):  
Aluminium Alloy ◽  
Corrosion Behavior
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