Microstructural, Magnetic, and Nanoindentation Studies of the Ball-Milled Ti80Ni20 Alloy

Journal Article · Fri Nov 15 00:00:00 EST 2019 · Journal of Superconductivity and Novel Magnetism

DOI:https://doi.org/10.1007/S10948-019-05145-1· OSTI ID:22919472

Louidi, S. ^[1]; Bououdina, M. ^[2]; Fellah, M. ^[3]

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1. Université 20 aout 1955, Département de Physique, Faculté des Sciences (Algeria)
2. University of Bahrain, Department of Physics, College of Science (Bahrain)
3. Abbes Laghrour University, Mechanical Engineering Department (Algeria)

Nanostructured Ti{sub 80}Ni{sub 20} material was elaborated by mechanical alloying from pure Ti and Ni powders in a planetary ball-mill P7 under argon atmosphere at ambient temperature. Morphological, microstructural, magnetic, and nanoindentation properties were studied using scanning electron microscopy, X-ray diffraction, magnetic measurements, and nanoindentation test. The morphological observations show the predominance of the welding phenomenon during the milling process. The Rietveld refinement of the X-ray diffraction pattern reveals, after 4 h of milling, the formation of the disordered hcp-Ti (Ni) solid solution in addition to elemental hcp-Ti and fcc-Ni. On further milling (20 h), the interdiffusion between Ti and Ni atoms is evidenced by the formation of disordered hcp-Ti (Ni) and fcc-Ni (Ti) solid solutions. The saturation magnetization and coercivity values are about of 159.8 emu/g and 80.79 Oe, respectively, after 20 h of milling. M{sub r}/M{sub s} ratio indicates the existence of small magnetic particles which are typically single domains (M{sub r}/M{sub s} 0.1–0.5) and/or multidomain (M{sub r}/M{sub s} < 0.1). Nanohardness values of the sintered powders fluctuates between 1.53 and 5.98 GPa while those of the elastic modulus varies in the range 130.73 to 164.53 GPa.

• OSTI ID: 22919472
• Journal Information: Journal of Superconductivity and Novel Magnetism, Vol. 32, Issue 11; Other Information: Copyright (c) 2019 Springer Science+Business Media, LLC, part of Springer Nature; Country of input: International Atomic Energy Agency (IAEA); ISSN 1557-1939
• Country of Publication: United States
• Language: English

Related Subjects

77 NANOSCIENCE AND NANOTECHNOLOGY
AMBIENT TEMPERATURE
BINARY ALLOY SYSTEMS
COERCIVE FORCE
FCC LATTICES
HCP LATTICES
MAGNETIZATION
NANOSTRUCTURES
NICKEL COMPOUNDS
PRESSURE RANGE GIGA PA
SCANNING ELECTRON MICROSCOPY
SINTERING
SOLID SOLUTIONS
TITANIUM COMPOUNDS
VIBRATING SAMPLE MAGNETOMETERS
X-RAY DIFFRACTION