Giant magnetostriction of ferromagnetic shape memory alloys with the grain boundary controlled by rapidly solidified method

快速凝固晶界控制铁磁形状记忆合金的超磁致伸缩

• 批准号: 13650709
• 负责人: OKAZAKI Teiko
• 金额: $ 1.92万
• 依托单位: Hirosaki University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2001
• 资助国家: 日本
• 起止时间: 2001 至 2003
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-13650709/
• 关键词: rapidly solidified method; giant magnetostriction; Fe-29.6at%Pd; Fe-15〜17at%Ga; Co_2NiGa; [100] texture; sensor; actuator; shape memory alloy; 超磁歪合金; Acoustic Elastometer; 磁性形状記憶合金; 液体急冷凝固法; Fe-Ga; 微細柱状組織; Fe-Pd合金薄帯; (100)集合組織

The propose of this study as the developments of multi-functional sensor/actuator material, whish is useful as complex, small robots and micro-machines. Ferromagnetic shape memory alloys(FSMA), in which giant strain is caused by re-arrangements of the martensitic variants by applying magnetic field, are new type of actuator material rapidly responded to magnetic field, while, thermo-elastic shape memory alloys respond to heat slowly. In order to obtain the FMSA with good controlled texture, a rapidly solidified method was applied to Fe-Pd,Fe-Pt,Heusler-type Co_2NiGa and Fe-Ga alloys.1)Fe-29.6at%Pd,Fe-23at%Pt alloys : Although a single crystal and bulk samples have martensite phase only under room temperature, rapidly solidified ribbons exhibit giant magnetostnction of 1800(Fe-29.6at%Pd) and 420(Fe-23at%Pt> at〜373 K. The origin is due to that the ribbons are caused by strongly [100] oriented columnar microstructure with the size of grain, 1〜3μm. Especially, the grains of about 1μm size consist of fine layer-structure of 30-40nm thickness. These nano-scale layers are parallel to the columnar structure, which is stress-induced martensite twin. The nano-scale martensite twins make phase-transformation temperature increase to〜373 K.2)Co_2NiGa alloy : Heusler-type Co_2NiGa as well as Ni_2MnGa, which exhibits giant magnetostnction at low temperature, is rapidly solidified in order to develop a FSMA. The ribbon sample exhibits large magnetostnction and good shape recovery at temperature range of 350〜400K.3)Fe-17at%Ga alloy : a single crystal with large magnetostriction of 300ppm is much bnttle. The rapidly solidified ribbon has ductility and exhibits large magnetostnction of 200ppm.

提出了多功能/执行器材料的发展，铁磁形状合金（FSMA），其中巨大的应变是由马氏体变体的重新汇率引起的获得具有良好控制纹理的FMSA，将快速固化的方法应用于Fe-Pd，Fe-Pt，Heusler-type co_2niga和Fe-GA合金。1）Fe-29.6AT％PD，Fe-23AT％PT：单晶体和散装样品harte nsite相，仅固定式丝带，通过强烈的[100]定向的圆柱微结构，晶状体尺寸为1-3μm，呈强烈的磁性粘液。结构30-40nm的厚度。 ATLOW温度迅速固化，以开发FSMA。色带样品表现出较大的磁梗和350-400K的良好形状范围固化色带具有灰尘，并表现出200ppm的大磁杆。

项目成果

T.Kubota, T.Okazaki, H.Kimura, T.Watanabe M.Wuttig Y.Furuya: "Effect of solidification on giant magnetostriction in ferromagnetic shape memory iron-based alloys"SCIENCE TECHNOLOGY OF ADVANCE MATERIALS. 2. 201-207 (2002)

T.Kubota、T.Okazaki、H.Kimura、T.Watanabe M.Wuttig Y.Furuya：“凝固对铁磁形状记忆铁基合金中巨磁致伸缩的影响”先进材料科学技术。

T.Kubota, Y.Furuya, T.Okazaki, M.Micchigami: "Giant Magnetostriction in Rapidly Solidified Fe-Pd Ribbon."J.Japan Institute of Metal. 65. 827-830 (2001)

T.Kubota、Y.Furuya、T.Okazaki、M.Micchigami：“快速凝固铁钯带中的巨磁致伸缩”。日本金属研究所。

久保田健, 岡崎禎子, 古屋泰文: "Fe-Pd合金超磁歪の急冷凝固効果"日本金属学会誌. 65・12. 1053-1056 (2001)

Ken Kubota、Teiko Okazaki、Yasufumi Furuya：“超磁致伸缩 Fe-Pd 合金的快速凝固效应”日本金属学会杂志 65・12（2001 年）。

Y.Furuya, N.W.Hagood, S.Tamoto, T.Kubota, T.Okazaki: "Evaluation of a Phase Transformation in FSMA Fe-Pd Alloy using a Magnetic Barkhausen Noise Technique"J.Japan Institute of Metal. 66. 28-33 (2002)

Y.Furuya、N.W.Hagood、S.Tamoto、T.Kubota、T.Okazaki：“使用磁巴克豪森噪声技术评估 FSMA Fe-Pd 合金中的相变”J.日本金属研究所。

T.Okazaki, Y.Furuya: "Developments of new Thermo-and Magnetic-Elastic Metallic Sensor/Actuator Materials by Rapid-solidification"MATERIAUX & TECHNIQUES, No.HORS SEEIE, DECEMBER. 74-77 (2002)

T.Okazaki、Y.Furuya：“通过快速凝固技术开发新型热弹性和磁弹性金属传感器/执行器材料”MATERIAUX