[[File:Strain hardening of PdCu40 by cold working.jpg|right|thumb|Strain hardening of PdCu40 by cold working]]

Fig. 2.43: Softening of PdCu40 after annealing for 0.5 hrs after 80% cold working

Fig. 2.44: Electrical resistivity p of PdCu alloys with and without an annealing step for forming an ordered phase