Single-crystal elastic constants of Fe-15Ni-15Cr alloy

A. Teklu; H. Ledbetter; S. Kim; L. A. Boatner; M. McGuire; V. Keppens

doi:10.1007/s11661-004-0059-y

Single-crystal elastic constants of Fe-15Ni-15Cr alloy

A. Teklu
, H. Ledbetter
, S. Kim
, L. A. Boatner
, M. McGuire
, V. Keppens

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

80 Scopus citations

Abstract

Resonant ultrasound spectroscopy (RUS) and pulse-echo (PE) superposition techniques have been used to determine the three independent elastic-stiffness constants C¹¹, C¹², and C ₄₄ as a function of temperature for single crystals of 70Fe-15Ni-15Cr alloy. The values of the elastic moduli determined using RUS and PE are in very good agreement within the range of uncertainties. This particular ternary composition of Fe, Ni, and Cr undergoes an fcc-bcc structural phase transformation near 190 K resulting in a low-temperature ferromagnetic phase. The Debye characteristic temperature was determined to be 447 K from PE and 451 K from RUS measurements. The Zener elastic anisotropy A = 2C₄₄/(C ₁₁ - C₁₂) is nearly constant: A = 3.53 ± 0.16 in Fe-Ni-Cr alloys with similar compositions. For these alloys, only small variations are observed in the Grüneisen parameter, γ ≈ 2.08, and in the Poisson ratio, ν _[hkl] = 0.293 ± 0.013.

Original language	English
Pages (from-to)	3149-3154
Number of pages	6
Journal	Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science
Volume	35 A
Issue number	10
DOIs	https://doi.org/10.1007/s11661-004-0059-y
State	Published - Oct 2004
Externally published	Yes

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@article{985e850d02434da59deefe7758d34b30,

title = "Single-crystal elastic constants of Fe-15Ni-15Cr alloy",

abstract = "Resonant ultrasound spectroscopy (RUS) and pulse-echo (PE) superposition techniques have been used to determine the three independent elastic-stiffness constants C11, C12, and C 44 as a function of temperature for single crystals of 70Fe-15Ni-15Cr alloy. The values of the elastic moduli determined using RUS and PE are in very good agreement within the range of uncertainties. This particular ternary composition of Fe, Ni, and Cr undergoes an fcc-bcc structural phase transformation near 190 K resulting in a low-temperature ferromagnetic phase. The Debye characteristic temperature was determined to be 447 K from PE and 451 K from RUS measurements. The Zener elastic anisotropy A = 2C44/(C 11 - C12) is nearly constant: A = 3.53 ± 0.16 in Fe-Ni-Cr alloys with similar compositions. For these alloys, only small variations are observed in the Gr{\"u}neisen parameter, γ ≈ 2.08, and in the Poisson ratio, ν [hkl] = 0.293 ± 0.013.",

author = "A. Teklu and H. Ledbetter and S. Kim and Boatner, \{L. A.\} and M. McGuire and V. Keppens",

year = "2004",

month = oct,

doi = "10.1007/s11661-004-0059-y",

language = "English",

volume = "35 A",

pages = "3149--3154",

journal = "Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science",

issn = "1073-5623",

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number = "10",

}

TY - JOUR

T1 - Single-crystal elastic constants of Fe-15Ni-15Cr alloy

AU - Teklu, A.

AU - Ledbetter, H.

AU - Kim, S.

AU - Boatner, L. A.

AU - McGuire, M.

AU - Keppens, V.

PY - 2004/10

Y1 - 2004/10

N2 - Resonant ultrasound spectroscopy (RUS) and pulse-echo (PE) superposition techniques have been used to determine the three independent elastic-stiffness constants C11, C12, and C 44 as a function of temperature for single crystals of 70Fe-15Ni-15Cr alloy. The values of the elastic moduli determined using RUS and PE are in very good agreement within the range of uncertainties. This particular ternary composition of Fe, Ni, and Cr undergoes an fcc-bcc structural phase transformation near 190 K resulting in a low-temperature ferromagnetic phase. The Debye characteristic temperature was determined to be 447 K from PE and 451 K from RUS measurements. The Zener elastic anisotropy A = 2C44/(C 11 - C12) is nearly constant: A = 3.53 ± 0.16 in Fe-Ni-Cr alloys with similar compositions. For these alloys, only small variations are observed in the Grüneisen parameter, γ ≈ 2.08, and in the Poisson ratio, ν [hkl] = 0.293 ± 0.013.

AB - Resonant ultrasound spectroscopy (RUS) and pulse-echo (PE) superposition techniques have been used to determine the three independent elastic-stiffness constants C11, C12, and C 44 as a function of temperature for single crystals of 70Fe-15Ni-15Cr alloy. The values of the elastic moduli determined using RUS and PE are in very good agreement within the range of uncertainties. This particular ternary composition of Fe, Ni, and Cr undergoes an fcc-bcc structural phase transformation near 190 K resulting in a low-temperature ferromagnetic phase. The Debye characteristic temperature was determined to be 447 K from PE and 451 K from RUS measurements. The Zener elastic anisotropy A = 2C44/(C 11 - C12) is nearly constant: A = 3.53 ± 0.16 in Fe-Ni-Cr alloys with similar compositions. For these alloys, only small variations are observed in the Grüneisen parameter, γ ≈ 2.08, and in the Poisson ratio, ν [hkl] = 0.293 ± 0.013.

UR - https://www.scopus.com/pages/publications/8644275573

U2 - 10.1007/s11661-004-0059-y

DO - 10.1007/s11661-004-0059-y

M3 - Article

AN - SCOPUS:8644275573

SN - 1073-5623

VL - 35 A

SP - 3149

EP - 3154

JO - Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science

JF - Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science

IS - 10

ER -

Single-crystal elastic constants of Fe-15Ni-15Cr alloy

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