Vacancy-Impurity Interaction during and after Quenching of Ni-5 wt% Mn Alloy

Ali, A. R.; Farid, Z.; Takla, E.

doi:10.1002/pssa.2211280204

Cited by 2 publications

(1 citation statement)

References 14 publications

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“…The vacancy migrates further to a deeper trap or falls into sinks during the migration process with annealing temperature rising from 550-750 ºC. The activation energy of this stage (1.82 eV) had the same order of magnitude as that required for the dissociation of vacancy clusters in Fe and Ni alloys [32,33]. Moreover, the recovery process during this stage was largely controlled by a second order reaction kinetics.…”

Section: Resultsmentioning

confidence: 99%

COMPARISON STUDY BEWTWEEN THE RECOVERY BEHAVIOR OF DEFORMED QUENCHED, PRE-ANNEALED AND PULSED LASER DAMAGED Fe50Ni50 ALLOY BY MAGNETIC MEASUREMENTS

Ali

Takla

Meleka

2020

Int. J. Eng. Tech. Mgmt. Res.

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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.

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Section: Resultsmentioning

confidence: 99%

COMPARISON STUDY BEWTWEEN THE RECOVERY BEHAVIOR OF DEFORMED QUENCHED, PRE-ANNEALED AND PULSED LASER DAMAGED Fe50Ni50 ALLOY BY MAGNETIC MEASUREMENTS

Ali

Takla

Meleka

2020

Int. J. Eng. Tech. Mgmt. Res.

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Investigation of the Behaviour of Structural Changes during Recovery of Crystal Defects in Plastically Deformed Fe–50% Ni Alloy by Magnetic Measurements

Ali

Mahmoud

Farid

et al. 1998

phys. stat. sol. (a)

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Isochronal and isothermal annealing experiments in the temperature range 25 to 900 °C revealed the existence of different annealing stages in the annealing spectrum of plastically deformed Fe–50% Ni alloy by observing the associated changes in maximum magnetic permeability (μmax) and magnetic coercivity (Hcr(1.16 ± 0.02) eV which is explained on the basis of an increase in local order in the alloy matrix. A second stage in the temperature range 550 to 750 °C arises because of the dissociation of defect clusters, activated by (1.8 ± 0.1) eV. The third recovery stage appears above 750 °C, activated by (3.06 ± 0.02) eV, and the process is related to the climb motion of dislocations during the recrystallization process. Changes in initial lattice defect concentration were found to have influence on the amplitude and the position of the different observed stages. The kinetics of FeNi3 precipitation observed at high temperatures (Ta ≥ 800 °C) are discussed.

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Vacancy-Impurity Interaction during and after Quenching of Ni-5 wt% Mn Alloy

Cited by 2 publications

References 14 publications

COMPARISON STUDY BEWTWEEN THE RECOVERY BEHAVIOR OF DEFORMED QUENCHED, PRE-ANNEALED AND PULSED LASER DAMAGED Fe50Ni50 ALLOY BY MAGNETIC MEASUREMENTS

COMPARISON STUDY BEWTWEEN THE RECOVERY BEHAVIOR OF DEFORMED QUENCHED, PRE-ANNEALED AND PULSED LASER DAMAGED Fe50Ni50 ALLOY BY MAGNETIC MEASUREMENTS

Investigation of the Behaviour of Structural Changes during Recovery of Crystal Defects in Plastically Deformed Fe–50% Ni Alloy by Magnetic Measurements

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