Martensitic transformation behavior and shape memory effect of Co-Fe ferromagnetic shape memory alloys

Yunqing Ma; Huifang Jiang; Shuiyuan Yang; Cuiping Wang; Xingjun Liu

Martensitic transformation behavior and shape memory effect of Co-Fe ferromagnetic shape memory alloys

Yunqing Ma^*
, Huifang Jiang
, Shuiyuan Yang
, Cuiping Wang
, Xingjun Liu

^*Corresponding author for this work

Xiamen University

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

1 Scopus citations

Abstract

Microstructure, martensitic transformation temperature and shape memory effect of Co-Fe alloys were investigated by optical observation, X-ray diffraction, DSC and bending tests. Results show that the shape memory effect of Co-Fe alloys is associated with the fcc/hcp martensitic transformation. When Fe content is higher than 5.65wt%, the microstructure exhibits single γ phase with fcc structure. When Fe content is lower than 5.6wt%, the microstructure consists of γ phase and ε martensitic phase with hcp structure. The martensitic transformation temperatures of Co-xFe alloys are almost linearly decreased with increasing Fe content, following the relationship: Ms (°C)=417-69.97x(Fe%). The highest recoverable strain of Co-4Fe (wt%) alloy is 0.86%. It is believed that Co-Fe alloys will exhibit better shape memory effect after proper heat treatment and shape memory training.

Original language	English
Pages (from-to)	409-412
Number of pages	4
Journal	Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering
Volume	38
Issue number	3
State	Published - Mar 2009
Externally published	Yes

Keywords

Co-Fe alloys
Martensitic transformation
Microstructure
Shape memory effect

Cite this

@article{9970ef177aca446d9dfa0bfffe05308a,

title = "Martensitic transformation behavior and shape memory effect of Co-Fe ferromagnetic shape memory alloys",

abstract = "Microstructure, martensitic transformation temperature and shape memory effect of Co-Fe alloys were investigated by optical observation, X-ray diffraction, DSC and bending tests. Results show that the shape memory effect of Co-Fe alloys is associated with the fcc/hcp martensitic transformation. When Fe content is higher than 5.65wt\%, the microstructure exhibits single γ phase with fcc structure. When Fe content is lower than 5.6wt\%, the microstructure consists of γ phase and ε martensitic phase with hcp structure. The martensitic transformation temperatures of Co-xFe alloys are almost linearly decreased with increasing Fe content, following the relationship: Ms (°C)=417-69.97x(Fe\%). The highest recoverable strain of Co-4Fe (wt\%) alloy is 0.86\%. It is believed that Co-Fe alloys will exhibit better shape memory effect after proper heat treatment and shape memory training.",

keywords = "Co-Fe alloys, Martensitic transformation, Microstructure, Shape memory effect",

author = "Yunqing Ma and Huifang Jiang and Shuiyuan Yang and Cuiping Wang and Xingjun Liu",

year = "2009",

month = mar,

language = "英语",

volume = "38",

pages = "409--412",

journal = "Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering",

issn = "1002-185X",

publisher = "Science Press ",

number = "3",

}

TY - JOUR

T1 - Martensitic transformation behavior and shape memory effect of Co-Fe ferromagnetic shape memory alloys

AU - Ma, Yunqing

AU - Jiang, Huifang

AU - Yang, Shuiyuan

AU - Wang, Cuiping

AU - Liu, Xingjun

PY - 2009/3

Y1 - 2009/3

N2 - Microstructure, martensitic transformation temperature and shape memory effect of Co-Fe alloys were investigated by optical observation, X-ray diffraction, DSC and bending tests. Results show that the shape memory effect of Co-Fe alloys is associated with the fcc/hcp martensitic transformation. When Fe content is higher than 5.65wt%, the microstructure exhibits single γ phase with fcc structure. When Fe content is lower than 5.6wt%, the microstructure consists of γ phase and ε martensitic phase with hcp structure. The martensitic transformation temperatures of Co-xFe alloys are almost linearly decreased with increasing Fe content, following the relationship: Ms (°C)=417-69.97x(Fe%). The highest recoverable strain of Co-4Fe (wt%) alloy is 0.86%. It is believed that Co-Fe alloys will exhibit better shape memory effect after proper heat treatment and shape memory training.

AB - Microstructure, martensitic transformation temperature and shape memory effect of Co-Fe alloys were investigated by optical observation, X-ray diffraction, DSC and bending tests. Results show that the shape memory effect of Co-Fe alloys is associated with the fcc/hcp martensitic transformation. When Fe content is higher than 5.65wt%, the microstructure exhibits single γ phase with fcc structure. When Fe content is lower than 5.6wt%, the microstructure consists of γ phase and ε martensitic phase with hcp structure. The martensitic transformation temperatures of Co-xFe alloys are almost linearly decreased with increasing Fe content, following the relationship: Ms (°C)=417-69.97x(Fe%). The highest recoverable strain of Co-4Fe (wt%) alloy is 0.86%. It is believed that Co-Fe alloys will exhibit better shape memory effect after proper heat treatment and shape memory training.

KW - Co-Fe alloys

KW - Martensitic transformation

KW - Microstructure

KW - Shape memory effect

UR - https://www.scopus.com/pages/publications/65549117831

M3 - 文章

AN - SCOPUS:65549117831

SN - 1002-185X

VL - 38

SP - 409

EP - 412

JO - Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering

JF - Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering

IS - 3

ER -

Martensitic transformation behavior and shape memory effect of Co-Fe ferromagnetic shape memory alloys

Abstract

Keywords

Other files and links

Fingerprint

Cite this