Effect of ausaging on the morphology of martensite in an Fe-25%Ni-7.5%Si alloy

Y. Himuro; O. Ikeda; R. Kainuma; K. Ishida

doi:10.1051/jp4:2001835

Effect of ausaging on the morphology of martensite in an Fe-25%Ni-7.5%Si alloy

Y. Himuro, O. Ikeda, R. Kainuma, K. Ishida

ENG - Metallurgy

Research output: Contribution to journal › Conference article › peer-review

4 Citations (Scopus)

Abstract

The martensitic transformations in an Fe-25%Ni-7.5%Si (mass%) alloy ausaged under various conditions were investigated by means of optical and transmission electron microscopy, differential scanning calorimetry, electrical resistivity-temperature measurements and hardness-testing. It was clarified that nanoscale particles of γ'-(Ni,Fe)₃Si with L1₂ structure were formed in the austenite matrix by ausaging between 400 and 600°C, while no precipitation occurred due to ausaging at 700°C. The Ms temperature was depressed by ausaging at 400 and 500°C, but hardly changed when the ausaging temperature was 600°C. It was observed that the morphology of martensite which was lenticular in unaged specimen changed to a mixture of lenticular and thin plate by ausaging at below 600°C.

Original language	English
Pages (from-to)	Pr8205-Pr8210
Journal	Journal De Physique. IV : JP
Volume	11
Issue number	8
DOIs	https://doi.org/10.1051/jp4:2001835
Publication status	Published - 2001 Nov
Event	5th European Symposium on Martensitic Transformations and Shape Memory Alloys ESOMAT'2000 - Villa Olmo, Como, Italy Duration: 2000 Sept 4 → 2000 Sept 8

ASJC Scopus subject areas

Physics and Astronomy(all)

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10.1051/jp4:2001835

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title = "Effect of ausaging on the morphology of martensite in an Fe-25%Ni-7.5%Si alloy",

abstract = "The martensitic transformations in an Fe-25%Ni-7.5%Si (mass%) alloy ausaged under various conditions were investigated by means of optical and transmission electron microscopy, differential scanning calorimetry, electrical resistivity-temperature measurements and hardness-testing. It was clarified that nanoscale particles of γ'-(Ni,Fe)3Si with L12 structure were formed in the austenite matrix by ausaging between 400 and 600°C, while no precipitation occurred due to ausaging at 700°C. The Ms temperature was depressed by ausaging at 400 and 500°C, but hardly changed when the ausaging temperature was 600°C. It was observed that the morphology of martensite which was lenticular in unaged specimen changed to a mixture of lenticular and thin plate by ausaging at below 600°C.",

author = "Y. Himuro and O. Ikeda and R. Kainuma and K. Ishida",

note = "Copyright: Copyright 2020 Elsevier B.V., All rights reserved.; 5th European Symposium on Martensitic Transformations and Shape Memory Alloys ESOMAT'2000 ; Conference date: 04-09-2000 Through 08-09-2000",

year = "2001",

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doi = "10.1051/jp4:2001835",

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T1 - Effect of ausaging on the morphology of martensite in an Fe-25%Ni-7.5%Si alloy

AU - Himuro, Y.

AU - Ikeda, O.

AU - Kainuma, R.

AU - Ishida, K.

PY - 2001/11

Y1 - 2001/11

N2 - The martensitic transformations in an Fe-25%Ni-7.5%Si (mass%) alloy ausaged under various conditions were investigated by means of optical and transmission electron microscopy, differential scanning calorimetry, electrical resistivity-temperature measurements and hardness-testing. It was clarified that nanoscale particles of γ'-(Ni,Fe)3Si with L12 structure were formed in the austenite matrix by ausaging between 400 and 600°C, while no precipitation occurred due to ausaging at 700°C. The Ms temperature was depressed by ausaging at 400 and 500°C, but hardly changed when the ausaging temperature was 600°C. It was observed that the morphology of martensite which was lenticular in unaged specimen changed to a mixture of lenticular and thin plate by ausaging at below 600°C.

AB - The martensitic transformations in an Fe-25%Ni-7.5%Si (mass%) alloy ausaged under various conditions were investigated by means of optical and transmission electron microscopy, differential scanning calorimetry, electrical resistivity-temperature measurements and hardness-testing. It was clarified that nanoscale particles of γ'-(Ni,Fe)3Si with L12 structure were formed in the austenite matrix by ausaging between 400 and 600°C, while no precipitation occurred due to ausaging at 700°C. The Ms temperature was depressed by ausaging at 400 and 500°C, but hardly changed when the ausaging temperature was 600°C. It was observed that the morphology of martensite which was lenticular in unaged specimen changed to a mixture of lenticular and thin plate by ausaging at below 600°C.

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Y2 - 4 September 2000 through 8 September 2000

ER -

Effect of ausaging on the morphology of martensite in an Fe-25%Ni-7.5%Si alloy

Abstract

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