Elastic anisotropy of rafted Ni-base superalloy at high temperatures

Tetsu Ichitsubo; Daisuke Koumoto; Masahiko Hirao; Katsushi Tanaka; Makoto Osawa; Tadaharu Yokokawa; Hiroshi Harada

doi:10.1016/S1359-6454(03)00326-4

Elastic anisotropy of rafted Ni-base superalloy at high temperatures

Tetsu Ichitsubo, Daisuke Koumoto, Masahiko Hirao, Katsushi Tanaka, Makoto Osawa, Tadaharu Yokokawa, Hiroshi Harada

Materials Development Division

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

30 Citations (Scopus)

Abstract

The elastic constants of the rafted Ni-base single-crystal superalloy, TMS-26, at high temperatures (∼1000 °C) have been studied with acoustic resonance methods. The rafted superalloy can be regarded as an elastic body of tetragonal symmetry. The elastic anisotropy factors, c₁₁/c ₃₃ and E₁₀₀/E₀₀₁, increase with temperature up to 1.010-1.025. Although a micromechanics model can reproduce this trend, the calculated anisotropy (∼1.001) is much smaller than the measurements, which can be related with the internal strain due to the lattice misfit. The elastic anisotropy of E₀₀₁ < E₁₀₀ = E₀₁₀ contributes to the transverse rafting under external stress.

Original language	English
Pages (from-to)	4863-4869
Number of pages	7
Journal	Acta Materialia
Volume	51
Issue number	16
DOIs	https://doi.org/10.1016/S1359-6454(03)00326-4
Publication status	Published - 2003 Sept 15

Keywords

Acoustic methods
Alloys (nickel)
Annealing
Mechanical properties (elastic)
Micromechanics

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Ceramics and Composites
Polymers and Plastics
Metals and Alloys

Access to Document

10.1016/S1359-6454(03)00326-4

Cite this

@article{9b62a14399494062954aac51bf2d4aeb,

title = "Elastic anisotropy of rafted Ni-base superalloy at high temperatures",

abstract = "The elastic constants of the rafted Ni-base single-crystal superalloy, TMS-26, at high temperatures (∼1000 °C) have been studied with acoustic resonance methods. The rafted superalloy can be regarded as an elastic body of tetragonal symmetry. The elastic anisotropy factors, c11/c 33 and E100/E001, increase with temperature up to 1.010-1.025. Although a micromechanics model can reproduce this trend, the calculated anisotropy (∼1.001) is much smaller than the measurements, which can be related with the internal strain due to the lattice misfit. The elastic anisotropy of E001 < E100 = E010 contributes to the transverse rafting under external stress.",

keywords = "Acoustic methods, Alloys (nickel), Annealing, Mechanical properties (elastic), Micromechanics",

author = "Tetsu Ichitsubo and Daisuke Koumoto and Masahiko Hirao and Katsushi Tanaka and Makoto Osawa and Tadaharu Yokokawa and Hiroshi Harada",

note = "Funding Information: The authors are very grateful to Prof. H. Ogi for valuable discussions and comments. This work was partly supported by the Iketani Foundation and the Grant-in-Aid for Scientific Research (No. 13750656 for T. I. and No. 13650758 for K. T.) of the Ministry of Education, Science, Sports and Culture of Japan.",

year = "2003",

month = sep,

day = "15",

doi = "10.1016/S1359-6454(03)00326-4",

language = "English",

volume = "51",

pages = "4863--4869",

journal = "Acta Materialia",

issn = "1359-6454",

publisher = "Elsevier Limited",

number = "16",

}

TY - JOUR

T1 - Elastic anisotropy of rafted Ni-base superalloy at high temperatures

AU - Ichitsubo, Tetsu

AU - Koumoto, Daisuke

AU - Hirao, Masahiko

AU - Tanaka, Katsushi

AU - Osawa, Makoto

AU - Yokokawa, Tadaharu

AU - Harada, Hiroshi

N1 - Funding Information: The authors are very grateful to Prof. H. Ogi for valuable discussions and comments. This work was partly supported by the Iketani Foundation and the Grant-in-Aid for Scientific Research (No. 13750656 for T. I. and No. 13650758 for K. T.) of the Ministry of Education, Science, Sports and Culture of Japan.

PY - 2003/9/15

Y1 - 2003/9/15

N2 - The elastic constants of the rafted Ni-base single-crystal superalloy, TMS-26, at high temperatures (∼1000 °C) have been studied with acoustic resonance methods. The rafted superalloy can be regarded as an elastic body of tetragonal symmetry. The elastic anisotropy factors, c11/c 33 and E100/E001, increase with temperature up to 1.010-1.025. Although a micromechanics model can reproduce this trend, the calculated anisotropy (∼1.001) is much smaller than the measurements, which can be related with the internal strain due to the lattice misfit. The elastic anisotropy of E001 < E100 = E010 contributes to the transverse rafting under external stress.

AB - The elastic constants of the rafted Ni-base single-crystal superalloy, TMS-26, at high temperatures (∼1000 °C) have been studied with acoustic resonance methods. The rafted superalloy can be regarded as an elastic body of tetragonal symmetry. The elastic anisotropy factors, c11/c 33 and E100/E001, increase with temperature up to 1.010-1.025. Although a micromechanics model can reproduce this trend, the calculated anisotropy (∼1.001) is much smaller than the measurements, which can be related with the internal strain due to the lattice misfit. The elastic anisotropy of E001 < E100 = E010 contributes to the transverse rafting under external stress.

KW - Acoustic methods

KW - Alloys (nickel)

KW - Annealing

KW - Mechanical properties (elastic)

KW - Micromechanics

UR - http://www.scopus.com/inward/record.url?scp=0042009414&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0042009414&partnerID=8YFLogxK

U2 - 10.1016/S1359-6454(03)00326-4

DO - 10.1016/S1359-6454(03)00326-4

M3 - Article

AN - SCOPUS:0042009414

SN - 1359-6454

VL - 51

SP - 4863

EP - 4869

JO - Acta Materialia

JF - Acta Materialia

IS - 16

ER -

Elastic anisotropy of rafted Ni-base superalloy at high temperatures

Abstract

Keywords

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this