Instability of the Parent Phase in Nearly Ordered Fe3Pt Invar Alloys

Takashi Fukuda; Takuya Yamamoto; Masataka Yamamoto; Tomoyuki Kakeshita

doi:10.4028/www.scientific.net/SSP.172-174.79

Paper Titles

Variant Selection in Austenitic Stainless Steel Samples after Cold Rolling and Tension Deformation
p.55

Investigation of Lath and Plate Martensite in a Carbon Steel
p.61

Martensite Midrib in an Fe-1C-17Cr Stainless Steel
p.67

Martensitic Transformations Using a Two-Body Isotropic Potential: Strain-Stress Simulations and Superelasticity in Monocrystals
p.73

Instability of the Parent Phase in Nearly Ordered Fe₃Pt Invar Alloys
p.79

Grain Scale Analysis of Variant Selection during the Gamma-Epsilon-Alpha' Phase Transformation in Austenitic Steels
p.84

An Interpretation on Kinetics of Martensitic Transformation
p.90

Microstructural and Crystallographic Characteristics of Deformation-Induced Martensite Formed in Cold-Drawn 316 Type Stainless Steel
p.99

Special Microstructures and Twin Features in Ti₅₀Ni_50-X(Pd,Au)_X at Small Hysteresis
p.105

HomeSolid State PhenomenaSolid State Phenomena Vols. 172-174Instability of the Parent Phase in Nearly Ordered...

Instability of the Parent Phase in Nearly Ordered Fe₃Pt Invar Alloys

Abstract:

The martensitic transformation in a nearly ordered Fe₃Pt is weak first order, and the martensite phase shows a large magnetic field-induced strain of several percent. We have investigated the origin of this transformation from its electronic structure. A characteristic feature in the electronic structure is the existence of a relatively high peak in the density of states of the minority spin band just below the Fermi energy. This peak splits into two peaks by tetragonal distortion, and one of them shifts to lower energy by the distortion, suggesting that the band Jahn-Teller effect is the main cause for the transformation.

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Solid State Phenomena (Volumes 172-174)

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79-83

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https://doi.org/10.4028/www.scientific.net/SSP.172-174.79

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Online since:

June 2011

Authors:

Takashi Fukuda, Takuya Yamamoto, Masataka Yamamoto, Tomoyuki Kakeshita

Keywords:

Ferromagnetic Shape Memory Alloys (FSMAs), Iron-Platinum Alloy, Martensitic Transformation (MT)

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