Study of phase equilibria, diagrams and transformations in the Fe-Co-Si ternary system

Mujin Yang; Cuiping Wang; Shuiyuan Yang; Chao Wu; Dichun Chen; Zhan Shi; Xingjun Liu

doi:10.1016/j.matchemphys.2017.08.007

Study of phase equilibria, diagrams and transformations in the Fe-Co-Si ternary system

Mujin Yang
, Cuiping Wang
, Shuiyuan Yang
, Chao Wu
, Dichun Chen
, Zhan Shi
, Xingjun Liu^*

^*Corresponding author for this work

Xiamen University
Luoyang Ship Material Research Institute

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

3 Scopus citations

Abstract

A 1000 °C isothermal phase diagram in the total composition range of the Fe-Co-Si ternary system is constructed featuring the interconnected ε-(Fe,Co)Si, large bcc-structure (αFe), and fcc-structure (γFe,αCo) phases. In addition, a vertical magnetic plus ordering transition phase diagram of Fe_80-xCo_xSi₂₀ alloys is also constructed. It is shown that the magnetic transition (D0₃^ferro./para.) temperature increases with the Co concentration and reaches a maximum value (845 °C) at 50 at. % Co in the investigated Fe_80-xCo_xSi₂₀ alloys. Meanwhile, the B2/D0₃ ordering transition temperature versus Co content dependence exhibits an initial slight rise followed by a gradual decrease to ∼67 at. % Co. Furthermore, a fcc/bcc martensitic transformation was revealed in several Co-rich ternary alloys under study. The resulting lath martensitic microstructures of the studied alloys include numerous twins and dislocations defects, revealing a similarity with the FeNi-based alloy system.

Original language	English
Pages (from-to)	180-188
Number of pages	9
Journal	Materials Chemistry and Physics
Volume	201
DOIs	https://doi.org/10.1016/j.matchemphys.2017.08.007
State	Published - 1 Nov 2017
Externally published	Yes

Keywords

Magnetic transition
Martensitic transformation
Microstructure
Order-disorder transition
Phase equilibrium

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10.1016/j.matchemphys.2017.08.007

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@article{aa2dbad18bf640a2ae2d93be3540abc3,

title = "Study of phase equilibria, diagrams and transformations in the Fe-Co-Si ternary system",

abstract = "A 1000 °C isothermal phase diagram in the total composition range of the Fe-Co-Si ternary system is constructed featuring the interconnected ε-(Fe,Co)Si, large bcc-structure (αFe), and fcc-structure (γFe,αCo) phases. In addition, a vertical magnetic plus ordering transition phase diagram of Fe80-xCoxSi20 alloys is also constructed. It is shown that the magnetic transition (D03ferro./para.) temperature increases with the Co concentration and reaches a maximum value (845 °C) at 50 at. \% Co in the investigated Fe80-xCoxSi20 alloys. Meanwhile, the B2/D03 ordering transition temperature versus Co content dependence exhibits an initial slight rise followed by a gradual decrease to ∼67 at. \% Co. Furthermore, a fcc/bcc martensitic transformation was revealed in several Co-rich ternary alloys under study. The resulting lath martensitic microstructures of the studied alloys include numerous twins and dislocations defects, revealing a similarity with the FeNi-based alloy system.",

keywords = "Magnetic transition, Martensitic transformation, Microstructure, Order-disorder transition, Phase equilibrium",

author = "Mujin Yang and Cuiping Wang and Shuiyuan Yang and Chao Wu and Dichun Chen and Zhan Shi and Xingjun Liu",

note = "Publisher Copyright: {\textcopyright} 2017",

year = "2017",

month = nov,

day = "1",

doi = "10.1016/j.matchemphys.2017.08.007",

language = "英语",

volume = "201",

pages = "180--188",

journal = "Materials Chemistry and Physics",

issn = "0254-0584",

publisher = "Elsevier B.V.",

}

TY - JOUR

T1 - Study of phase equilibria, diagrams and transformations in the Fe-Co-Si ternary system

AU - Yang, Mujin

AU - Wang, Cuiping

AU - Yang, Shuiyuan

AU - Wu, Chao

AU - Chen, Dichun

AU - Shi, Zhan

AU - Liu, Xingjun

PY - 2017/11/1

Y1 - 2017/11/1

N2 - A 1000 °C isothermal phase diagram in the total composition range of the Fe-Co-Si ternary system is constructed featuring the interconnected ε-(Fe,Co)Si, large bcc-structure (αFe), and fcc-structure (γFe,αCo) phases. In addition, a vertical magnetic plus ordering transition phase diagram of Fe80-xCoxSi20 alloys is also constructed. It is shown that the magnetic transition (D03ferro./para.) temperature increases with the Co concentration and reaches a maximum value (845 °C) at 50 at. % Co in the investigated Fe80-xCoxSi20 alloys. Meanwhile, the B2/D03 ordering transition temperature versus Co content dependence exhibits an initial slight rise followed by a gradual decrease to ∼67 at. % Co. Furthermore, a fcc/bcc martensitic transformation was revealed in several Co-rich ternary alloys under study. The resulting lath martensitic microstructures of the studied alloys include numerous twins and dislocations defects, revealing a similarity with the FeNi-based alloy system.

AB - A 1000 °C isothermal phase diagram in the total composition range of the Fe-Co-Si ternary system is constructed featuring the interconnected ε-(Fe,Co)Si, large bcc-structure (αFe), and fcc-structure (γFe,αCo) phases. In addition, a vertical magnetic plus ordering transition phase diagram of Fe80-xCoxSi20 alloys is also constructed. It is shown that the magnetic transition (D03ferro./para.) temperature increases with the Co concentration and reaches a maximum value (845 °C) at 50 at. % Co in the investigated Fe80-xCoxSi20 alloys. Meanwhile, the B2/D03 ordering transition temperature versus Co content dependence exhibits an initial slight rise followed by a gradual decrease to ∼67 at. % Co. Furthermore, a fcc/bcc martensitic transformation was revealed in several Co-rich ternary alloys under study. The resulting lath martensitic microstructures of the studied alloys include numerous twins and dislocations defects, revealing a similarity with the FeNi-based alloy system.

KW - Magnetic transition

KW - Martensitic transformation

KW - Microstructure

KW - Order-disorder transition

KW - Phase equilibrium

UR - https://www.scopus.com/pages/publications/85029306541

U2 - 10.1016/j.matchemphys.2017.08.007

DO - 10.1016/j.matchemphys.2017.08.007

M3 - 文章

AN - SCOPUS:85029306541

SN - 0254-0584

VL - 201

SP - 180

EP - 188

JO - Materials Chemistry and Physics

JF - Materials Chemistry and Physics

ER -

Study of phase equilibria, diagrams and transformations in the Fe-Co-Si ternary system

Abstract

Keywords

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