The crystal structure of Aluminium is _______.

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JKSSB JE Mechanical 02 Nov 2021 Shift 1 Official Paper
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  1. Body Centred Cubic 
  2. Body centred tetra gonal 
  3. Hexagonally Closed Packed
  4. Face Centred Cubic

Answer (Detailed Solution Below)

Option 4 : Face Centred Cubic
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Concept:

Crystal structure of Material

FCC: FCC stands for Face Centered Cubic. In one unit cell, there is one atom at center, 1 atom at each corner, and 1 atom on each face. The crystal structure is used for Ductile materials only. 

GATE ME 2009 Images-Q15.2

E.g. Ni, Cu, Ag, Pt, Au, Pb, Al, Austenite or γ-iron

BCC: BCC stands for Body-Centered Cubic. In one unit cell, there is one atom at centre, 1 atom at each corner. The crystal structure is used for Brittle materials only. 

GATE ME 2009 Images-Q15.1

 

E.g. V, Mo, Ta, W, Ferrite or α-iron, δ-ferrite or δ-iron

HCP: HCP stands for Hexagonal Close Packed Crystal Structure.

E.g. Mg, Zn, Ti, Cd, Co

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