Diffusionless phase transformation characteristics of Mn 75.7Pt24.3

H. E. Karaca; S. M. Saghaian; H. Tobe; E. Acar; B. Basaran; M. Nagasako; R. Kainuma; R. D. Noebe

doi:10.1016/j.jallcom.2013.11.174

Diffusionless phase transformation characteristics of Mn _75.7Pt_24.3

H. E. Karaca, S. M. Saghaian, H. Tobe, E. Acar, B. Basaran, M. Nagasako, R. Kainuma, R. D. Noebe

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

9 Scopus citations

Abstract

Phase transformation, damping, and magnetic properties of a Mn _75.7Pt_24.3 (at.%) alloy were characterized. It was observed that Mn_75.7Pt_24.3 exhibits a stable phase transformation in the temperature range of 180-200 C with a small temperature hysteresis and maximum transformation strain of ∼0.5%. The crystal structures and lattice parameters of the transforming phases were determined, where both the high and low temperature phases have a face-centered cubic structure but with different lattice parameters. Finally, it was revealed that the alloy possesses high damping capacity (average Tan Delta of 0.16) during phase transformation.

Original language	English
Pages (from-to)	412-415
Number of pages	4
Journal	Journal of Alloys and Compounds
Volume	589
DOIs	https://doi.org/10.1016/j.jallcom.2013.11.174
State	Published - Mar 15 2014

Bibliographical note

Funding Information:
This work was supported by the NASA Fundamental Aeronautics Program, Aeronautical Sciences Project and the NASA EPSCOR program under Grant no: NNX11AQ31A and National Science Foundation (NSF) CMMI award #0954541 .

Keywords

Damping
MnPt
Phase transformations
X-ray diffraction

ASJC Scopus subject areas

Mechanics of Materials
Mechanical Engineering
Metals and Alloys
Materials Chemistry

Access to Document

10.1016/j.jallcom.2013.11.174

Cite this

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title = "Diffusionless phase transformation characteristics of Mn 75.7Pt24.3",

abstract = "Phase transformation, damping, and magnetic properties of a Mn 75.7Pt24.3 (at.%) alloy were characterized. It was observed that Mn75.7Pt24.3 exhibits a stable phase transformation in the temperature range of 180-200 C with a small temperature hysteresis and maximum transformation strain of ∼0.5%. The crystal structures and lattice parameters of the transforming phases were determined, where both the high and low temperature phases have a face-centered cubic structure but with different lattice parameters. Finally, it was revealed that the alloy possesses high damping capacity (average Tan Delta of 0.16) during phase transformation.",

keywords = "Damping, MnPt, Phase transformations, X-ray diffraction",

author = "Karaca, {H. E.} and Saghaian, {S. M.} and H. Tobe and E. Acar and B. Basaran and M. Nagasako and R. Kainuma and Noebe, {R. D.}",

note = "Funding Information: This work was supported by the NASA Fundamental Aeronautics Program, Aeronautical Sciences Project and the NASA EPSCOR program under Grant no: NNX11AQ31A and National Science Foundation (NSF) CMMI award #0954541 .",

year = "2014",

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doi = "10.1016/j.jallcom.2013.11.174",

language = "English",

volume = "589",

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T1 - Diffusionless phase transformation characteristics of Mn 75.7Pt24.3

AU - Karaca, H. E.

AU - Saghaian, S. M.

AU - Tobe, H.

AU - Acar, E.

AU - Basaran, B.

AU - Nagasako, M.

AU - Kainuma, R.

AU - Noebe, R. D.

N1 - Funding Information: This work was supported by the NASA Fundamental Aeronautics Program, Aeronautical Sciences Project and the NASA EPSCOR program under Grant no: NNX11AQ31A and National Science Foundation (NSF) CMMI award #0954541 .

PY - 2014/3/15

Y1 - 2014/3/15

N2 - Phase transformation, damping, and magnetic properties of a Mn 75.7Pt24.3 (at.%) alloy were characterized. It was observed that Mn75.7Pt24.3 exhibits a stable phase transformation in the temperature range of 180-200 C with a small temperature hysteresis and maximum transformation strain of ∼0.5%. The crystal structures and lattice parameters of the transforming phases were determined, where both the high and low temperature phases have a face-centered cubic structure but with different lattice parameters. Finally, it was revealed that the alloy possesses high damping capacity (average Tan Delta of 0.16) during phase transformation.

AB - Phase transformation, damping, and magnetic properties of a Mn 75.7Pt24.3 (at.%) alloy were characterized. It was observed that Mn75.7Pt24.3 exhibits a stable phase transformation in the temperature range of 180-200 C with a small temperature hysteresis and maximum transformation strain of ∼0.5%. The crystal structures and lattice parameters of the transforming phases were determined, where both the high and low temperature phases have a face-centered cubic structure but with different lattice parameters. Finally, it was revealed that the alloy possesses high damping capacity (average Tan Delta of 0.16) during phase transformation.

KW - Damping

KW - MnPt

KW - Phase transformations

KW - X-ray diffraction

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JO - Journal of Alloys and Compounds

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