2004年11月30日 · In this paper, we discuss the results of the characterization tests of various NiMnGa alloy crystals, with and without post-crystal growth heat treatment, by DSC, dilatometry, and optical metallography and scanning electron microscopy.

2020年10月28日 · The present work focused on the microstructural, thermal, electrical, and damping characterization of NiMnGa samples produced through a powder pressing and a sintering process; the effect of sintering times and of the starting powder size were evaluated.

2020年6月24日 · The NiMnGa particles exhibit a typical one-step martensitic transformation with a single exothermic and endothermic peak between 0 and 50 °C. And the Curie transition with a small bend on the curve can be found at near 100 °C.

One of the most widely known FSMAs, NiMnGa, can produce cyclic strains on the order of 6% and is a promising candidate for use in high stroke, smart actuators for a range of aerospace applications (Ulakko et al., 2000; Tellinen et al., 2002; Couch and Chopra, 2003).

2018年9月1日 · Fe x Co 1-x NiMnGa alloys are designed based on the high entropy effect and in search of potential functional magnetic alloys. The Fe x Co 1-x NiMnGa alloys compose of ordered phases with combined intergranular and cleavage fracture mechanism.

Abslruct-Strain versus field measurements for a ferromagnetic shape memory alloy in the NiMnGa system demonstrate the largest magnetostrictive strains to date of nearly 1.3%. These strains are achieved in the martensitic state through field-induced variant rearrangement.

2012年5月29日 · Time-resolved metallographic optical microscopy techniques are used together with magnetic domain imaging to clarify the interaction between magnetic domains and twin boundary (TB) motion in magnetic shape memory NiMnGa single crystals.

2025年1月19日 · In collaboration with the at NU, we are developing a new additive manufacturing method that combines extrusion-based 3D-printing and sintering heat-treatments to create Ni-Mn-Ga magnetic shape-memory alloy (SMA) and NiTi-Nb SMA wires or micro-lattices.

2019年3月5日 · Single crystalline Ni-Mn-Ga is well known as a prototype ferromagnetic shape memory alloy (FSMA) exhibiting a giant magnetic field-induced strain (MFIS), up to 12%, due to the magnetically driven...

2020年10月28日 · The present work focused on the microstructural, thermal, electrical, and damping characterization of NiMnGa samples produced through a powder pressing and a sintering process; the effect of sintering times and of the starting powder size were evaluated.