Aluminium alloy AL-P7009-T74511. Extruded bars and sections a or D ≤ 125 mm with peripheral coarse grain control

1994 ◽  
Keyword(s):  
Aluminium Alloy ◽  
Coarse Grain

scholarly journals Melt Conditioned Direct Chill (MC-DC) Casting of AA-6111 Aluminium Alloy Formulated from Incinerator Bottom Ash (IBA)

Recycling ◽  
2019 ◽  
Vol 4 (3) ◽  
pp. 37 ◽  
Author(s):  
Kawther W Al-Helal ◽  
Jaime Lazaro-Nebreda ◽  
Jayesh B Patel ◽  
Geoff M Scamans ◽  
Zhongyun Fan
Keyword(s):  
Aluminium Alloy ◽  
Bottom Ash ◽  
Casting Process ◽  
Direct Chill ◽  
Optical Metallography ◽  
Coarse Grain ◽  
Refined Grains ◽  
Microstructure Evaluation ◽  
Dc Casting

The melt conditioned direct chill (MC-DC) casting process has been used for the production of billets of AA-6111 alloy formulated from recycled aluminium derived from incinerator bottom ash (IBA). The billets were homogenised and then extruded into planks. Optical metallography of the MC-DC billets showed equiaxed refined grains in comparison to DC and grain refined (DC-GR) billets formulated from the same scrap source. Microstructure evaluation for the extruded planks showed a less extensive peripheral coarse grain (PCG) for the MC-DC sample.

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