Microstructure, martensitic transformation and properties in the Ni50Mn30Ga16Cu4 ferromagnetic shape memory alloy
Microstructure, martensitic transformation and properties in the Ni50Mn30Ga16Cu4 ferromagnetic shape memory alloy
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DOI：
10.1016/j.msea.2012.08.009
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发表时间：
2012-12
期刊：
影响因子：
6.4
通讯作者：
G. Dong;L. Gao;C. Tan;W. Cai
中科院分区：
文献类型：
--
作者：
G. Dong;L. Gao;C. Tan;W. Cai
A Heusler Ni50Mn30Ga1Cu4alloy with the highest compressive strength has been obtained by substituting 4at% Cu for Ga in a ternary Ni50Mn30Ga20ferromagnetic shape memory alloy. It is shown that the highest compressive strength of 3178.9MPa with a fracture strain up to 13.6% can be achieved at room temperature. To date, this is the highest compressive strength reported in the Ni–Mn–Ga alloy system. The martensitic structure changes from 7M with 0at% Cu to non-modulated T martensite with 4at% Cu . In addition, the Cu doping markedly increases the martensitic transformation temperature from 82.1°C to 136.6°C. At the same time, the Curie temperature and saturation magnetization for the Ni50Mn30Ga16Cu4alloy slowly decrease due to the 4at% Cu addition.
