Staff Members - Benha University
HYDROSTATIC TRAINING AND CHARACTERIZATION OF NEAR STOICHIOMETRIC Ni-Mn-Ga ALLOY”
• 2019
Publication Information
Authors
Nour M Eldabah, Saleh M Kayetbay, Mohamed A Gepreel, and
Ahmed M Elassal
Keywords
Shape memory alloys, Ni-Mn-Ga., Martensite twins, Hydrostatic training, Magnetic properties measurements.
Journal
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Publisher
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Volume
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Issue
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Pages
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publication.type
Local
Paper Link
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Supplementary Materials
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Abstract
Shape memory alloys are programmed to memorize original trained shape. Ni Mn Ga is
one of the ferromagnetic shape memory alloys. It is used as actuator, and sensor due to large output
strain at high frequencies. This work presents a study on enhancing magnetic properties of thermally
treated alloy by using new method of training. Single near stoichiometric composition was produced.
Elemental analysis showed homogeneity of the alloy. XRD pattern revealed Martensitic phase peaks.
Transformation temperature was found to be below 100 CO. Training was applied by hydrostatic
pressing die. Different training pressures were obtained using hydraulic press. After applying
hydrostatic pressures stating from 2.5 bar to 10 bar, it was found that pressures up to 7.5 bar will the
coercivity and saturation magnetization of the alloy, while loads beyond 7.5 bar lessened these
magnetic properties
one of the ferromagnetic shape memory alloys. It is used as actuator, and sensor due to large output
strain at high frequencies. This work presents a study on enhancing magnetic properties of thermally
treated alloy by using new method of training. Single near stoichiometric composition was produced.
Elemental analysis showed homogeneity of the alloy. XRD pattern revealed Martensitic phase peaks.
Transformation temperature was found to be below 100 CO. Training was applied by hydrostatic
pressing die. Different training pressures were obtained using hydraulic press. After applying
hydrostatic pressures stating from 2.5 bar to 10 bar, it was found that pressures up to 7.5 bar will the
coercivity and saturation magnetization of the alloy, while loads beyond 7.5 bar lessened these
magnetic properties