Abstract
Through the magnetic measurements, isochronal annealing experiments in the temperature 25950 ºC of deformed, quenched, pre-annealed and pulsed laser damage samples Fe50Ni50 alloy revealed the existence of three annealing stages I, II and III in the annealing spectrum of heavily cold-worked by observing the associated changes in maximum magnetic permeability (µmax) on the magnetic field(H) for different annealing temperature. The first annealing stage I appeared in the temperature range from125-500 ºC and it was activated by energy 1.05 eV. It was attributed to the short range order caused by the long range migration of vacancies. The second annealing stage II appeared in the temperature range from 550-750 ºC and it was activated by 1.82 eV, it is associated with an increase in µmax due to the dissociation of vacancy clusters formed during stage I. The third annealing stage III appeared in the temperature range from 750-825 ºC and it was activated by 3.04 eV, it was related to the climb motion of dislocation during the recrystallization process.
Highlights
Attention, has recently been focused on the behavior of recovery of lattice defects in deformed, quenched, pre-annealed and pulsed laser damaged Fe-based alloys
The aim of the present work is to study the behaviour of structural changes induced by lattice defects created in intermetallic compound Fe50Ni50 after quenching and pre-annealed, to study the influence of additional lattice defects produced by plastic deformation and laser damaged on the behavior of isochronal annealing curves
The results of isochronal annealing observed in the present work for pulsed laser, pre-annealed (Ta =850 oC, ta= 2 h), deformed (η =10%, ta = 10 minutes) and quenched (Tq= 950 oC) Fe50Ni50 alloy in the temperature range from 25 to 950 oC [21,22,23,24]
Summary
“COMPARISON STUDY BEWTWEEN THE RECOVERY BEHAVIOR OF DEFORMED QUENCHED, PREANNEALED AND PULSED LASER DAMAGED Fe50Ni50 ALLOY BY MAGNETIC MEASUREMENTS.” International Journal of Engineering Technologies and Management Research, 6(5), 127-134. Attention, has recently been focused on the behavior of recovery of lattice defects in deformed, quenched, pre-annealed and pulsed laser damaged Fe-based alloys.
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