Click here to view fulltext PDF

Permanent link:
https://www.ias.ac.in/article/fulltext/boms/025/04/0315-0317

Cold working; XRD; aluminium alloys; dislocations.

A detailed X-ray Fourier line shape analysis has been performed on three compositions of Al–Zn alloys viz. Al–3 55 wt% Zn, Al–14 7 wt% Zn and Al–19 3 wt% Zn in fcc phase. It has been found that deformation stacking faults, both intrinsic 𝛼' and extrinsic 𝛼'' are absent in the cold worked state and twin fault 𝛽 is found to be slightly present in the deformed lattice of the two initial compositions of the alloys. Similar to the effect of solute germanium and copper, respectively in Al–Ge and Al–Cu systems, hexagonal zinc also fails to impart faulting in fcc Al–Zn system. This corroborates the fact that aluminium has high stacking fault energy.

G Karmakar¹ R Sen² S K Chattopadhyay¹ A K Meikap¹ S K Chatterjee¹

1. Regional Engineering College, Durgapur 713 209, India
2. Bidhan Chandra Institution, Durgapur 713 205, India

Published

August 2002

Manuscript received

4 April 2002

Manuscript revised

24 May 2002