Microsegregation and secondary phase formation during directional solidification of the single-crystal Ni-based superalloy LEK94

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Microsegregation and secondary phase formation during directional solidification of the single-crystal Ni-based superalloy LEK94. / Lopez-Galilea, Inmaculada; Huth, Stephan; Fries, Suzana G.; Warnken, Nils; Steinbach, Ingo; Theisen, Werner.

In: Metallurgical and Materials Transactions A, Vol. 43, No. 13, 12.2012, p. 5153-5164.

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Lopez-Galilea, Inmaculada ; Huth, Stephan ; Fries, Suzana G. ; Warnken, Nils ; Steinbach, Ingo ; Theisen, Werner. / Microsegregation and secondary phase formation during directional solidification of the single-crystal Ni-based superalloy LEK94. In: Metallurgical and Materials Transactions A. 2012 ; Vol. 43, No. 13. pp. 5153-5164.

Bibtex

@article{61ed463ebc8a461e99b57e313104f71a,
title = "Microsegregation and secondary phase formation during directional solidification of the single-crystal Ni-based superalloy LEK94",
abstract = "A multicomponent phase-field method coupled to thermodynamic calculations according to the CALPHAD method was used to simulate microstructural evolution during directional solidification of the LEK94 commercial single-crystal Ni-based superalloy using a two-dimensional unit cell approximation. We demonstrate quantitative agreement of calculated microsegregation profiles and profiles determined from casting experiments as well as calculated fraction solid curves with those determined in differential thermal analysis (DTA) measurements. Finally, the role of solidification rate on dendrite morphology and precipitation of the secondary phases is investigated and a new measure of the dendrite morphology is presented to quantify the effect of back diffusion on the amount of secondary phases.",
author = "Inmaculada Lopez-Galilea and Stephan Huth and Fries, {Suzana G.} and Nils Warnken and Ingo Steinbach and Werner Theisen",
year = "2012",
month = dec,
doi = "10.1007/s11661-012-1327-x",
language = "English",
volume = "43",
pages = "5153--5164",
journal = "Metallurgical and Materials Transactions A",
issn = "1073-5623",
publisher = "ASM International",
number = "13",

}

RIS

TY - JOUR

T1 - Microsegregation and secondary phase formation during directional solidification of the single-crystal Ni-based superalloy LEK94

AU - Lopez-Galilea, Inmaculada

AU - Huth, Stephan

AU - Fries, Suzana G.

AU - Warnken, Nils

AU - Steinbach, Ingo

AU - Theisen, Werner

PY - 2012/12

Y1 - 2012/12

N2 - A multicomponent phase-field method coupled to thermodynamic calculations according to the CALPHAD method was used to simulate microstructural evolution during directional solidification of the LEK94 commercial single-crystal Ni-based superalloy using a two-dimensional unit cell approximation. We demonstrate quantitative agreement of calculated microsegregation profiles and profiles determined from casting experiments as well as calculated fraction solid curves with those determined in differential thermal analysis (DTA) measurements. Finally, the role of solidification rate on dendrite morphology and precipitation of the secondary phases is investigated and a new measure of the dendrite morphology is presented to quantify the effect of back diffusion on the amount of secondary phases.

AB - A multicomponent phase-field method coupled to thermodynamic calculations according to the CALPHAD method was used to simulate microstructural evolution during directional solidification of the LEK94 commercial single-crystal Ni-based superalloy using a two-dimensional unit cell approximation. We demonstrate quantitative agreement of calculated microsegregation profiles and profiles determined from casting experiments as well as calculated fraction solid curves with those determined in differential thermal analysis (DTA) measurements. Finally, the role of solidification rate on dendrite morphology and precipitation of the secondary phases is investigated and a new measure of the dendrite morphology is presented to quantify the effect of back diffusion on the amount of secondary phases.

UR - http://www.scopus.com/inward/record.url?scp=84870426939&partnerID=8YFLogxK

U2 - 10.1007/s11661-012-1327-x

DO - 10.1007/s11661-012-1327-x

M3 - Article

AN - SCOPUS:84870426939

VL - 43

SP - 5153

EP - 5164

JO - Metallurgical and Materials Transactions A

JF - Metallurgical and Materials Transactions A

SN - 1073-5623

IS - 13

ER -