Effects of melt pressure on process stability and bonding strength of twin-roll cast steel/aluminum clad sheet

2017 ◽  
Vol 29 ◽  
pp. 438-446 ◽  
Author(s):  
Gang Chen ◽  
Guangming Xu
Keyword(s):  
Bonding Strength ◽  
Cast Steel ◽  
Process Stability ◽  
Clad Sheet ◽  
Twin Roll Cast ◽  
Twin Roll

scholarly journals Intermetallic Phases Identification and Diffusion Simulation in Twin-Roll Cast Al-Fe Clad Sheet

Materials ◽  
2021 ◽  
Vol 14 (24) ◽  
pp. 7771
Author(s):  
Barbora Křivská ◽  
Michaela Šlapáková ◽  
Jozef Veselý ◽  
Martin Kihoulou ◽  
Klaudia Fekete ◽  
...  
Keyword(s):  
Interdiffusion Coefficient ◽  
Intermetallic Layer ◽  
Industrial Applications ◽  
Intermetallic Phases ◽  
Selective Area ◽  
Transmission Electron ◽  
Clad Sheet ◽  
Twin Roll Cast ◽  
Diffusion Simulation ◽  
Twin Roll

Aluminium steel clad materials have high potential for industrial applications. Their mechanical properties are governed by an intermetallic layer, which forms upon heat treatment at the Al-Fe interface. Transmission electron microscopy was employed to identify the phases present at the interface by selective area electron diffraction and energy dispersive spectroscopy. Three phases were identified: orthorhombic Al5Fe2, monoclinic Al13Fe4 and cubic Al19Fe4MnSi2. An effective interdiffusion coefficient dependent on concentration was determined according to the Boltzmann–Matano method. The highest value of the interdiffusion coefficient was reached at the composition of the intermetallic phases. Afterwards, the process of diffusion considering the evaluated interdiffusion coefficient was simulated using the finite element method. Results of the simulations revealed that growth of the intermetallic phases proceeds preferentially in the direction of aluminium.

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