Multimodal size distributions of c0 precipitates during continuous cooling of UDIMET 720 Li

Rene Radis; Miroslava Schaffer; Mihaela Albu; Gerald Kothleitner; Peter Pölt; Ernst Kozeschnik

doi:10.1016/j.actamat.2009.08.002

Multimodal size distributions of c0 precipitates during continuous cooling of UDIMET 720 Li

Rene Radis, Miroslava Schaffer, Mihaela Albu, Gerald Kothleitner, Peter Pölt, Ernst Kozeschnik

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

Abstract

The technological properties of many nickel-based superalloys originate in the morphology and distribution of Ni3(Al, Ti) particles (c0precipitates). Starting from the solution-annealed condition, the distribution and the morphology of c0 precipitates are investigatedexperimentally during continuous cooling of the nickel-base superalloy UDIMET 720 Li. Characterization of the precipitates is carriedout by scanning electron microscopy and energy-filtered transmission electron microscopy investigations. Depending on cooling rate,monomodal, bimodal and even trimodal size distributions are observed. The experimental observations of the size distributions are confirmedby numerical simulations of the c0 precipitation kinetics. The theoretical background for occurrence of multimodal size distributionsduring continuous cooling is discussed.

Original language	English
Pages (from-to)	5739-5747
Journal	Acta Materialia
Volume	57
DOIs	https://doi.org/10.1016/j.actamat.2009.08.002
Publication status	Published - 2009

ASJC Scopus subject areas

Materials Science(all)

Fields of Expertise

Advanced Materials Science

Treatment code (Nähere Zuordnung)

Basic - Fundamental (Grundlagenforschung)

Access to Document

10.1016/j.actamat.2009.08.002Licence: Unspecified

Cite this

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title = "Multimodal size distributions of c0 precipitates during continuous cooling of UDIMET 720 Li",

abstract = "The technological properties of many nickel-based superalloys originate in the morphology and distribution of Ni3(Al, Ti) particles (c0precipitates). Starting from the solution-annealed condition, the distribution and the morphology of c0 precipitates are investigatedexperimentally during continuous cooling of the nickel-base superalloy UDIMET 720 Li. Characterization of the precipitates is carriedout by scanning electron microscopy and energy-filtered transmission electron microscopy investigations. Depending on cooling rate,monomodal, bimodal and even trimodal size distributions are observed. The experimental observations of the size distributions are confirmedby numerical simulations of the c0 precipitation kinetics. The theoretical background for occurrence of multimodal size distributionsduring continuous cooling is discussed.",

author = "Rene Radis and Miroslava Schaffer and Mihaela Albu and Gerald Kothleitner and Peter P{\"o}lt and Ernst Kozeschnik",

year = "2009",

doi = "10.1016/j.actamat.2009.08.002",

language = "English",

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pages = "5739--5747",

journal = "Acta Materialia",

issn = "1873-2453",

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TY - JOUR

T1 - Multimodal size distributions of c0 precipitates during continuous cooling of UDIMET 720 Li

AU - Radis, Rene

AU - Schaffer, Miroslava

AU - Albu, Mihaela

AU - Kothleitner, Gerald

AU - Pölt, Peter

AU - Kozeschnik, Ernst

PY - 2009

Y1 - 2009

N2 - The technological properties of many nickel-based superalloys originate in the morphology and distribution of Ni3(Al, Ti) particles (c0precipitates). Starting from the solution-annealed condition, the distribution and the morphology of c0 precipitates are investigatedexperimentally during continuous cooling of the nickel-base superalloy UDIMET 720 Li. Characterization of the precipitates is carriedout by scanning electron microscopy and energy-filtered transmission electron microscopy investigations. Depending on cooling rate,monomodal, bimodal and even trimodal size distributions are observed. The experimental observations of the size distributions are confirmedby numerical simulations of the c0 precipitation kinetics. The theoretical background for occurrence of multimodal size distributionsduring continuous cooling is discussed.

AB - The technological properties of many nickel-based superalloys originate in the morphology and distribution of Ni3(Al, Ti) particles (c0precipitates). Starting from the solution-annealed condition, the distribution and the morphology of c0 precipitates are investigatedexperimentally during continuous cooling of the nickel-base superalloy UDIMET 720 Li. Characterization of the precipitates is carriedout by scanning electron microscopy and energy-filtered transmission electron microscopy investigations. Depending on cooling rate,monomodal, bimodal and even trimodal size distributions are observed. The experimental observations of the size distributions are confirmedby numerical simulations of the c0 precipitation kinetics. The theoretical background for occurrence of multimodal size distributionsduring continuous cooling is discussed.

U2 - 10.1016/j.actamat.2009.08.002

DO - 10.1016/j.actamat.2009.08.002

M3 - Article

SN - 1873-2453

VL - 57

SP - 5739

EP - 5747

JO - Acta Materialia

JF - Acta Materialia

ER -