Magnetic and mechanical properties of Ni-Mn-Ga/Fe-Ga ferromagnetic shape memory composite
Magnetic and mechanical properties of Ni-Mn-Ga/Fe-Ga ferromagnetic shape memory composite
复制标题
Ni-Mn-Ga/Fe-Ga铁磁形状记忆复合材料的磁性能和机械性能
DOI：
10.1088/1674-1056/24/5/057502
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发表时间：
2015-05-01
影响因子：
1.7
通讯作者：
Wei, Cai
中科院分区：
文献类型：
--
作者：
Tan Chang-Long;Kun, Zhang;Wei, Cai
采用放电等离子烧结法制备了Ni-Mn-Ga和Fe-Ga铁磁形状记忆复合材料。研究了复合材料的磁性能和力学性能。与Ni-Mn-Ga合金相比，由于Fe-Ga产生的内应力的辅助，复合材料的磁致应变阈值明显降低。同时，复合材料的塑性也得到了显著的改善。获得了26%的断裂应变和1600 MPa的抗压强度。
A ferromagnetic shape memory composite of Ni-Mn-Ga and Fe-Ga was fabricated by using spark plasma sintering method. The magnetic and mechanical properties of the composite were investigated. Compared to the Ni-Mn-Ga alloy, the threshold field for magnetic-field-induced strain in the composite is clearly reduced owing to the assistance of internal stress generated from Fe-Ga. Meanwhile, the ductility has been significantly improved in the composite. A fracture strain of 26% and a compressive strength of 1600 MPa were achieved.