Effects of the substitution of gallium with boron on the physical and mechanical properties of Ni–Mn–Ga shape memory alloys期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

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Effects of the substitution of gallium with boron on the physical and mechanical properties of Ni–Mn–Ga shape memory alloys

Authors:	Yildirim Aydogdu Ali Sadi Turabi Mediha Kok Ayse Aydogdu Hirobumi Tobe Haluk Ersin Karaca

Institution:	1. Superconductivity and Thermal Analysis Laboratory, Department of Physics, Faculty of Science, Gazi University, Ankara, Turkey 2. Department of Mechanical Engineering, University of Kentucky, Lexington, KY, 40506, USA 3. Department of Physics, Faculty of Science, Firat University, Elazig, Turkey

Abstract:	The effects of the substitution of gallium with boron on the physical, mechanical and magnetic shape memory properties of Ni₅₁Mn_28.5Ga_20.5?xB_x (at.%) (x = 0, 1, 2, 3) polycrystalline alloys are investigated. It has been found that transformation temperatures are decreasing while hardness is increasing with boron addition. B-doping of NiMnGa alloys results in the formation of a second phase that increases its ductility and strength in compression. Moreover, saturation magnetization of austenite is decreasing, while Curie temperature of austenite is increasing with B-doping.

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