Effect of microsegregation and dislocations on the nucleation kinetics of the precipitation in aluminium alloy AA3003

S.P. Chen; N.C.W. Kuijpers; S. Zwaag, van der

doi:10.1016/S0921-5093(02)00245-9

Effect of microsegregation and dislocations on the nucleation kinetics of the precipitation in aluminium alloy AA3003

S.P. Chen, N.C.W. Kuijpers, S. Zwaag, van der

Mechanics of Materials

Research output: Contribution to journal › Article › Academic › peer-review

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Abstract

Nucleation kinetics of the precipitation for MnAl6 and MnAl12 in the aluminum alloy AA3003 alloy have been investigated experimentally and theoretically. The results show that cold rolling enhances the rate of precipitation and this effect increases as the annealing temperature decreases. Micro-segregation of the solute atom Mn at the dislocation network during cold deformation is found to have a significant effect on the nucleation kinetics of the precipitation of MnAl6 and MnAl12 in AA3003 in addition to the effect of dislocations, which increase the nucleation site density and reduce the nucleation barrier. A model to predict the start times of the precipitation during isothermal holding is constructed by considering the effects of dislocations and recovery as well as micro-segregation of Mn on the nucleation kinetics of precipitates. The predictions of the model are in good agreement with the experiment data.

Original language	English
Pages (from-to)	296-306
Number of pages	11
Journal	Materials Science and Engineering A
Volume	341
Issue number	1-2
DOIs	https://doi.org/10.1016/S0921-5093(02)00245-9
Publication status	Published - 2003

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title = "Effect of microsegregation and dislocations on the nucleation kinetics of the precipitation in aluminium alloy AA3003",

abstract = "Nucleation kinetics of the precipitation for MnAl6 and MnAl12 in the aluminum alloy AA3003 alloy have been investigated experimentally and theoretically. The results show that cold rolling enhances the rate of precipitation and this effect increases as the annealing temperature decreases. Micro-segregation of the solute atom Mn at the dislocation network during cold deformation is found to have a significant effect on the nucleation kinetics of the precipitation of MnAl6 and MnAl12 in AA3003 in addition to the effect of dislocations, which increase the nucleation site density and reduce the nucleation barrier. A model to predict the start times of the precipitation during isothermal holding is constructed by considering the effects of dislocations and recovery as well as micro-segregation of Mn on the nucleation kinetics of precipitates. The predictions of the model are in good agreement with the experiment data.",

author = "S.P. Chen and N.C.W. Kuijpers and {Zwaag, van der}, S.",

year = "2003",

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volume = "341",

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journal = "Materials Science and Engineering A",

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T1 - Effect of microsegregation and dislocations on the nucleation kinetics of the precipitation in aluminium alloy AA3003

AU - Chen, S.P.

AU - Kuijpers, N.C.W.

AU - Zwaag, van der, S.

PY - 2003

Y1 - 2003

N2 - Nucleation kinetics of the precipitation for MnAl6 and MnAl12 in the aluminum alloy AA3003 alloy have been investigated experimentally and theoretically. The results show that cold rolling enhances the rate of precipitation and this effect increases as the annealing temperature decreases. Micro-segregation of the solute atom Mn at the dislocation network during cold deformation is found to have a significant effect on the nucleation kinetics of the precipitation of MnAl6 and MnAl12 in AA3003 in addition to the effect of dislocations, which increase the nucleation site density and reduce the nucleation barrier. A model to predict the start times of the precipitation during isothermal holding is constructed by considering the effects of dislocations and recovery as well as micro-segregation of Mn on the nucleation kinetics of precipitates. The predictions of the model are in good agreement with the experiment data.

AB - Nucleation kinetics of the precipitation for MnAl6 and MnAl12 in the aluminum alloy AA3003 alloy have been investigated experimentally and theoretically. The results show that cold rolling enhances the rate of precipitation and this effect increases as the annealing temperature decreases. Micro-segregation of the solute atom Mn at the dislocation network during cold deformation is found to have a significant effect on the nucleation kinetics of the precipitation of MnAl6 and MnAl12 in AA3003 in addition to the effect of dislocations, which increase the nucleation site density and reduce the nucleation barrier. A model to predict the start times of the precipitation during isothermal holding is constructed by considering the effects of dislocations and recovery as well as micro-segregation of Mn on the nucleation kinetics of precipitates. The predictions of the model are in good agreement with the experiment data.

U2 - 10.1016/S0921-5093(02)00245-9

DO - 10.1016/S0921-5093(02)00245-9

M3 - Article

SN - 0921-5093

VL - 341

SP - 296

EP - 306

JO - Materials Science and Engineering A

JF - Materials Science and Engineering A

IS - 1-2

ER -

Effect of microsegregation and dislocations on the nucleation kinetics of the precipitation in aluminium alloy AA3003

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