首页|强磁场下Cu-Co难混溶合金凝固过程中晶体取向和性能的调控

强磁场下Cu-Co难混溶合金凝固过程中晶体取向和性能的调控

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对Cu50Co50合金在不同磁场强度下进行非平衡凝固实验,研究富钴相的取向、显微组织演化和磁性能.结果表明,凝固后相分离的棒状富钴相可以实现排列形态,在5 T强磁场下富钴相的晶体取向为<111>平行磁场方向.然而,发生二次液-液相分离的富铜相的取向没有受到HMF的显著影响.在0T磁场下凝固的合金表现出近磁各向同性行为,而在5 T磁场下凝固的合金则表现出磁各向异性行为.合金的饱和磁化强度略有增加,矫顽力相应降低,这与富钴晶体的取向演化行为密切相关.
Tailoring crystal orientation and property of Cu-Co immiscible alloy during solidification under high magnetic field
Non-equilibrium solidification experiments were conducted on Cu50Co50 alloys under different magnetic field intensities to investigate the orientation,microstructure evolution,and magnetic properties of the Co-rich phase.The results revealed that the phase-separated rod-like Co-rich phase can realize the alignment morphology and can be oriented with the<111>crystal direction along the direction of the 5 T high magnetic field(HMF).In contrast,the orientation of the Cu-rich phase,which underwent secondary liquid-liquid phase separation,was not significantly affected by the HMF.The alloy solidified at 0 T showed near-magnetic isotropic behavior,while the alloy solidified at 5 T displayed magnetic anisotropic behavior.The saturation magnetization of the alloy increased slightly,and the coercivity decreased correspondingly,which were strictly dependent on the orientation evolution of the Co-rich crystal.

high magnetic fieldmicrostructure evolutionCu-Co alloyphase separationmagnetic property

魏晨、李金山、闫育洁、贺一轩、Eric BEAUGNON、王军

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西北工业大学凝固技术国家重点实验室,西安 710072

Univ.Grenoble Alpes,INSA Toulouse,Univ.Toulouse Paul Sabatier,EMFL,CNRS,LNCMI,38000 Grenoble,France

强磁场 显微组织演化 铜钴合金 相分离 磁性能

National Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaFund of the State Key Laboratory of Solidification Processing in NWPU,ChinaInnovation Capability Support Program of Shaanxi Province,ChinaFundamental Research Funds for the Central Universities,China

51690163521743752021-TS-012020KJXX-073

2024

10.1016/S1003-6326(24)66513-1

中国有色金属学报(英文版)
中国有色金属学会

中国有色金属学报(英文版)

CSTPCD
影响因子：1.183
ISSN：1003-6326
年,卷(期)：2024.34(6)
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