نتایج جستجو برای: ni mn ga

تعداد نتایج: 120807  

Journal: :Advances in Materials Science and Engineering 2008

Journal: :International Journal of Composite Materials 2012

2017
Zongbin Li Bo Yang Naifu Zou Yudong Zhang Claude Esling Weimin Gan Xiang Zhao Liang Zuo

Heusler type Ni-Mn-Ga ferromagnetic shape memory alloys can demonstrate excellent magnetic shape memory effect in single crystals. However, such effect in polycrystalline alloys is greatly weakened due to the random distribution of crystallographic orientation. Microstructure optimization and texture control are of great significance and challenge to improve the functional behaviors of polycrys...

2013
Cassie Witherspoon Peiqi Zheng Markus Chmielus Sven C. Vogel David C. Dunand Peter Müllner

Magnetic shape memory alloys display magnetic-field-induced strain (MFIS) of up to 10% as single crystals. Polycrystalline materials are much easier to create but display a near-zero MFIS because twinning of neighboring grains introduces strain incompatibility, leading to high internal stresses. Pores reduce these incompatibilities between grains and thus increase the MFIS of polycrystalline Ni...

2009
Matthew Reinhold Peter Müllner

Ni-Mn-Ga is a ferromagnetic shape memory alloy that deforms by twin boundary motion. The magneto-mechanical properties depend strongly on the twin microstructure. A thermomechanical treatment was applied to a Ni-Mn-Ga single crystal with coexisting 10M and 14M martensite structures to create twin boundaries and align the short crystallographic c direction preferentially perpendicular to the sur...

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