Development of new shape memory alloys-Alloy design and process-

新型形状记忆合金的开发-合金设计与工艺-

• 批准号: 20360342
• 负责人: OIKAWA Katsunari
• 金额: $ 12.4万
• 依托单位: Tohoku University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2008
• 资助国家: 日本
• 起止时间: 2008 至 2010
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-20360342/
• 关键词: 形状記憶合金; 結晶成長; 強磁性; 高温; 強磁性形状記憶合; マルテンサイト変態; 磁歪; 単結晶; 強磁性形状記憶合金

Ni-Fe-Ga alloys and Ni-Fe-Ga-Co alloys have been received great attention as ferromagnetic shape memory alloys and high temperature alloys. In this study, the fiber shape single crystals of these alloys were prepared by the micro-pulling-down method. Optimum conditions for the crystal growth and the solidification behavior and physical properties of them were investigated. As the results, the single crystal wires approximately 1-3 mm in diameter and 200 mm in length could be grown by 10 mm/min. pulling-down-rate. The effective distribution coefficient of them approximately unit, suggesting that the macroscopic segregation are very small. The stresstemperature phase diagram shows that the martensitic phase transformation behavior showed the Clausius-Clapeyron relation.

Ni-Fe-Ga合金和Ni-Fe-Ga-Co合金作为铁磁形状记忆合金和高温合金受到了广泛的关注。本研究采用微下拉法制备了这些合金的纤维状单晶。研究了晶体生长的最佳条件以及晶体的凝固行为和物理性能。结果表明，以10 mm/min的速度可以生长出直径约1~3 mm、长约200 mm的单晶丝。下拉率。它们的有效分配系数接近单位，说明宏观偏析很小。应力-温度相图表明，马氏体相变行为符合Clausius-Clapeyron关系。

项目成果

Macroscopic pattern formation preceding martensitic transformation in an ferromagnetic shape memory alloy Ni51Fe22Ga27

铁磁形状记忆合金 Ni51Fe22Ga27 马氏体转变前的宏观图案形成

• 发表时间: 2008
• 期刊: Appl. Phys. Lett
• 作者: Y. Murakami;D. Shindo;R. Kainuma;K. Oikawa;K. Ishida
• 通讯作者: K. Ishida

Elastic and superelastic properties of NiFeCoGa fiber grown by micro-pulling down method

微下拉法生长NiFeCoGa纤维的弹性和超弹性性能

• 发表时间: 2009
• 期刊: Mater. Trans
• 作者: K. Oikawa;R. Saito;K. Anzai;H. Ishikawa;Y. Sutou;T. Omori;A. Yoshikawa;V. A. Chernenko;S. Besseghini;A. Gambardella;R. Kainuma and K. Ishida
• 通讯作者: R. Kainuma and K. Ishida

Large magnetic-field-induced strain in Co-Ni-Al single-variant ferromagnetic shape memory alloy

Co-Ni-Al单变体铁磁形状记忆合金中的大磁场诱导应变

• 发表时间: 2010
• 期刊: SCRIPTA MATERIALIA
• 影响因子: 6
• 作者: H.Morito;ら
• 通讯作者: ら

Properties of Co-alloyed Ni-Fe-Ga Ferromagnetic Shape Memory Alloys

• DOI: 10.1007/s11665-009-9425-7
• 发表时间: 2009-08-01
• 期刊: JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
• 影响因子: 2.3
• 作者: Chernenko, V. A.;Oikawa, K.;Ishida, K.
• 通讯作者: Ishida, K.

Elucidation of microstructures produced in Ni51Fe22Ga27 ferromagnetic shpe memory alloy

Ni51Fe22Ga27 铁磁形状记忆合金微观结构的阐明

• 发表时间: 2010
• 期刊: Journal of Applied Physocs 107
• 作者: Y.Murakami;他
• 通讯作者: 他