Evaluaciones microcalorimétricas no-isotermas en aleaciones de Cu-9Ni-5,5Sn templadas y deformadas en frío

E. Donoso, M. J. Diáñez, J. M. Criado
2012 Revista de Metalurgia  
The thermal aging of both a quenched and a cold rolled homogeneous supersaturated Cu-9 % wt Ni-5.5 wt % Sn alloy has been studied from differential scanning calorimetry (DSC) and microhardness measurements. An increase of the hardness during the aging of the quenched sample, because of the precipitation of a g´ phase, takes place. On the contrary, no hardness increase was observed during the aging of the cold rolled sample. A theoretical analysis of the enthalpy determined from the first DSC
more » ... om the first DSC exothermic peak suggests that a segregation of the solute towards the dislocations occurs during the aging of the cold rolled alloy. The values of the n Avrami-Erofeev coefficients estimated from the kinetic analysis supports the above interpretations.
doi:10.3989/revmetalm.1136 fatcat:v6kr2nvwe5btrifptptjd7vbee