Second phase dissolution

Aaron, Howard B.; Kotler, G.R.

doi:10.1007/bf02663326

Cited by 188 publications

(114 citation statements)

References 16 publications

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“…In the case of precipitate growth on grain-boundaries, both the diffusivity in bulk and on the grain-boundary play an essential role. The fast diffusion along grain boundaries acts as a collector plate to accumulate solute [16], or diffuse solute in the case of precipitate dissolution [17,18].…”

Section: Introductionmentioning

confidence: 99%

Finite element modelling of creep cavity filling by solute diffusion

Versteylen

Szymanski

Sluiter

et al. 2018

Philosophical Magazine

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Section: Introductionmentioning

confidence: 99%

Finite element modelling of creep cavity filling by solute diffusion

Versteylen

Szymanski

Sluiter

et al. 2018

Philosophical Magazine

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“…The model is based on the conservation of mass. Some papers that study particle dissolution and growth by determination of the solution of a Stefan problem are due to, among many others, Whelan, 15) Aaron and Kotler, 16) and Tundal and Ryum. 17) In these papers it is assumed that the interface moves due to diffusion of one alloying element only, i.e.…”

Section: Introductionmentioning

confidence: 99%

A Model of the β-AlFeSi to α-Al(FeMn)Si Transformation in Al-Mg-Si Alloys

Kuijpers¹,

Vermolen

Vuik

et al. 2003

Mater. Trans.

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During the homogenisation process of Al-Mg-Si extrusion alloys, plate-like -Al 5 FeSi particles transform to multiple roundedAl 12 (FeMn) 3 Si particles. The rate of this to transformation determines the time which is required to homogenise the aluminium sufficiently for extrusion. In this paper, a finite element approach is presented which model the development of fraction transformed with time, in the beginning of the transformation, as a function of homogenisation temperature, as-cast microstructure and concentration of alloying elements. We treat the to transformation mathematically as a Stefan problem, where the concentration and the position of the moving boundaries of the and particles are determined. For the boundary conditions of the model thermodynamic calculations are used (Thermo-Calc). The influence of several process parameters on the modelled transformed fraction, such as the temperature and initial thickness of the plates, are investigated. Finally the model is validated with experimental data.

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“…Previous work on this subject [24] suggested the diffusion of impurities away from precipitates can slow the dissolution process of a precipitate such that this process cannot be considered as the exact opposite of impurity precipitation, as originally suggested 1251. However, this mechanism of dissolution sluggishness is an important factor only for very slowly diffusing impurities which is not the case for Ni, Fe or Co in silicon at usual processing temperatures.…”

Section: Of 228mentioning

confidence: 95%

Interactions Of Structural Defects With Metallic Impurities In Multicrystalline Silicon

et al. 1996

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Portions ABSTRACTInteractions between structural defects and metallic impurities were studied in multicrystalline silicon for solar cell applications. The objective was to gain insight into the relationship between solar cell processing, metallic impurity behavior and the resultant effect on materiddevice performance. With an intense synchrotron x-ray source, high sensitivity x-ray fluorescence measurements were utilized to determine impurity distributions with a spatial resolution of = 1jm. Diffusion length mapping and final solar cell characteristics gauged materiddevice performance. The materials were tested in both the as-grown state and after full solar cell processing. Iron and nickel metal impurities were located at structural defects in asgrown material, while after solar cell processing, both impurities were still observed in low performance regions. These results indicate that multicrystalline silicon solar cell performance is directly related to metal impurities which are not completely removed during typical processing treatments. A discussion of possible mechanisms for this incomplete removal is presented.

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Second phase dissolution

Cited by 188 publications

References 16 publications

Finite element modelling of creep cavity filling by solute diffusion

Finite element modelling of creep cavity filling by solute diffusion

A Model of the β-AlFeSi to α-Al(FeMn)Si Transformation in Al-Mg-Si Alloys

Interactions Of Structural Defects With Metallic Impurities In Multicrystalline Silicon

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Second phase dissolution

Cited by 188 publications

References 16 publications

Finite element modelling of creep cavity filling by solute diffusion

Finite element modelling of creep cavity filling by solute diffusion

A Model of the &beta;-AlFeSi to &alpha;-Al(FeMn)Si Transformation in Al-Mg-Si Alloys

Interactions Of Structural Defects With Metallic Impurities In Multicrystalline Silicon

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A Model of the β-AlFeSi to α-Al(FeMn)Si Transformation in Al-Mg-Si Alloys