Magnetic field induced strain and damping behavior of Ni-Mn-Ga particles/epoxy resin composite

作者：Tian, Bing^*; Chen, Feng; Tong, Yunxiang; Li, Li; Zheng, Yufeng

来源：Journal of Alloys and Compounds, 2014, 604: 137-141.

DOI：10.1016/j.jallcom.2014.03.100

• Ni-Mn-Ga alloy
• Composite materials
• Phase transition
• Magnetostriction
• Damping property

This study investigated the magnetic field induced strain (MFIS) and damping behavior of the disordered and ordered Ni-Mn-Ga particles/epoxy composites. The apparent MFIS was detected in the ordered composite with 50 wt% particle content. The composite exhibited a MFIS of similar to 40 ppm (strain-c) for expansion at martensite state which was much smaller than phase transformation strain (strain-c, similar to 210 ppm). The internal friction of the composites at glass transition temperature was enhanced with the addition of Ni-Mn-Ga particles, which might be attributed to the introduction of interfacial friction between particles and matrix. The ordered composite exhibited a lower damping ability than the disordered composite, which was attributed to the different distribution of particles in the two composites.

• 出版日期2014-8-15
• 单位哈尔滨工程大学; 北京大学