GRAIN-BOUNDARY PRECIPITATION UNDER IRRADIATION IN DILUTE BINARY ALLOYS

Acta Metallurgica Sinica (English Letters) ›› 2003, Vol. 16 ›› Issue (5): 365-374 .

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GRAIN-BOUNDARY PRECIPITATION UNDER IRRADIATION IN DILUTE BINARY ALLOYS

S.H.Song[1], Z.X.Yuan[1], J.Liu[1], R.G.Faulkner[2]

[1]SchoolofMaterialsandMetallurgy,WuhanUniversityofScienceandTechnology,Wuhan430081,China [2]InstituteofPolymerTechnologyandMaterialsEngineering,LoughboroughUniversity,Loughborough,Le-icestershireLE113TU,UK

Received:2002-09-18 Revised:2002-01-13 Online:2003-10-25 Published:2009-10-10
Contact: S.H.Song

Abstract

Abstract: Irradiation-induced grain boundary segregation of solute atoms frequently bring about grain boundary precipitation of a second phase because of its making the solubility limit of the solute surpassed at grain boundaries. Until now the kinetic models for irradiation-induced grain boundary precipitation have been sparse. For this reason, we have theoretically treated grain boundary precipitation under irradiation in dilute binary alloys. Predictions of γ'-Ni3 Si precipitation at grain boundaries are made for a dilute Ni-Si alloy subjected to irradiation. It is demonstrated that grain boundary silicon segregation under irradiation may lead to grain boundary γ'-Ni3Si precipitation over a certain temperature range.

Key words: segregation, precipitation, grain boundary,

S.H.Song, Z.X.Yuan, J.Liu, R.G.Faulkner. GRAIN-BOUNDARY PRECIPITATION UNDER IRRADIATION IN DILUTE BINARY ALLOYS[J]. Acta Metallurgica Sinica (English Letters), 2003, 16(5): 365-374 .

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GRAIN-BOUNDARY PRECIPITATION UNDER IRRADIATION IN DILUTE BINARY ALLOYS

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