Growth and perfection of oriented Fe-3wt%Si bicrystals

Kadečková, S.; Toula, P.; Adámek, J.

doi:10.1016/0022-0248(87)90304-6

Cited by 42 publications

(20 citation statements)

References 22 publications

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“…In some cases, bulging of the boundary into one of the adjoined grains is observed, which is ascribed to the changed dislocation substructure in this grain. Nevertheless, after consuming this defected structure, the boundary surprisingly returns into its original position in the bicrystal center [5].…”

Section: Introductionmentioning

confidence: 98%

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Growth of metallic bicrystals with high-energy grain boundary orientation

Lejček

Havlová

2005

Journal of Crystal Growth

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Section: Introductionmentioning

confidence: 98%

“…[5]. The seed for these bicrystals consists of two single-crystalline semi-cylinders of desired orientations that are joined together.…”

Section: Introductionmentioning

confidence: 99%

Growth of metallic bicrystals with high-energy grain boundary orientation

Lejček

Havlová

2005

Journal of Crystal Growth

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“…The cylinder prepared in this way having the axis parallel to the [100] crystallographic directions of both adjacent crystals was used as a seed for bicrystal growth. All details concerning the seed preparation and growth of bicrystals are described elsewhere [14]. In this way the tilt bicrystals with the {013} and {012} symmetrical and (017)/(011) asymmetrical grain boundaries were obtained.…”

Section: Methodsmentioning

confidence: 99%

“…Bicrystals of an Fe-3mass%Si alloy with the diameter of 13 mm and the length of 50 mm with planar grain boundaries parallel to their axes were grown by the floating zone technique [14]. Two semicylindrical single-crystalline pieces were put together so that the joined planes possessed the orientation of the desired boundary plane.…”

Section: Methodsmentioning

confidence: 99%

Grain boundary migration in Σ=5 bicrystals of an Fe-3%Si alloy

et al. 1994

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Abstract. Migration of differently oriented grain boundaries was studied in the 22 = 5, 36.9~ tilt bicrystals of an Fe-3mass%Si alloy by the modified reversed-capillary technique. The principles of this method are outlined and discussed in connection with the application of multiple annealing of a single sample. It is shown that the errors introduced by both heating and cooling periods and by possible existence of an incubation period do not exceed the scatter of experimental data. A linear dependence between grain boundary migration velocity and driving force was found in most cases. The measured values of the product of grain boundary mobility and energy for individual grain boundaries differ substantially. The values of activation energy of migration of 332 kJ/mol, 392 kJ/mol, and 97 kJ/mol were found for the {012}, {013}, and (001)/(034) grain boundaries, respectively.

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“…A cylindrical bicrystal having a diameter of 13 mm and a length of 55 mm, was prepared from a vacuum-melted Fe-6at.% Si alloy (99.98% purity iron alloyed with semiconductor purity silicon) by floating zone melting using induction heating (360 kHz) [9]. Similar growth conditions were used as for the growth of single crystals, namely, a zone length of 8-9 mm, a rate of downward moving zone of 7 mm/h, a rotation rate of the melted rod of 30 rpm, hydrogen atmosphere and high temperature stability of the melted zone (4-3~ The bicrystal containing a near-S5 36 ~ (001){001} tilt GB was grown from the two oriented seeds in the common (001) direction.…”

Section: Methodsmentioning

confidence: 99%

Pressure effect on grain boundary wetting at various temperatures

Rabkin¹,

Gust²,

Łojkowski

et al. 1994

Interface Sci

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Abstract. Bicrystals of Fe-6 at.% Si alloy containing (001){001}$5 tilt grain boundaries with a deposited zinc layer have been annealed at various hydrostatic pressure at four temperatures between 700 ~ and 905~ After the anneals the dihedral angle 0 of the grain boundary groove formed at the site of the grain boundary intersection with the solid-melt interphase boundary has been measured. The transition from complete to incomplete wetting of the grain boundary by the zinc-rich melt (dewetting phase transition) has been found to occur as the pressure increased at all temperatures studied. The temperature dependence of the dewetting transition pressure pw has been determined. That dependence has a minimum at a temperature of 790~ which is close to the peritectic temperature in the Fe-Zn system (782~ A thermodynamic analysis of the wetting phenomena in the two-component system, based on Becker's regular solution model for the surface tension of the interphase boundary, explains the minimum in the p~o(T) dependence.

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Growth and perfection of oriented Fe-3wt%Si bicrystals

Cited by 42 publications

References 22 publications

Growth of metallic bicrystals with high-energy grain boundary orientation

Growth of metallic bicrystals with high-energy grain boundary orientation

Grain boundary migration in Σ=5 bicrystals of an Fe-3%Si alloy

Pressure effect on grain boundary wetting at various temperatures

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