Mechanical Synthesis and Heat Treatment of Ni75Ti25 Alloy

Joanna Panek; Bożena Bierska-Piech; Jolanta Niedbała

doi:10.4028/www.scientific.net/SSP.203-204.390

Paper Titles

The Microstructure of Quasicrystalline Al-Cu-Fe Alloys Doped with Tungsten
p.372

The Fracture Morphology of Composites with Quasicrystalline Phase
p.376

Structural Studies of the Relaxed Amorphous Phase in the Fe₈₁B₁₄Nb₅ Alloy
p.380

The Study of Local Structure of Amorphous Fe-Co-B-Si-Nb Alloy by Atomic Pair Distribution Function
p.386

Mechanical Synthesis and Heat Treatment of Ni₇₅Ti₂₅ Alloy
p.390

Characterization of Ni₇₅Mo₂₅Alloy Prepared by Mechanical Alloying and Heat Treatment
p.394

Changes in the Structure of Palladium Nanograins in the Carbon Film (C-nPd) under the Influence of Hydrogen
p.398

Calculation of Electronic Structure of the K-Phase Cells which are Involved in Thermobarically Induced Epitaxial Growth of Diamond Crystals in High-Carbon Fe-Al-Alloys
p.402

Influence of the Crystallographic Orientation of CuZn30 Single Crystal on the Portevin-Le Chatelier Effect
p.406

HomeSolid State PhenomenaSolid State Phenomena Vols. 203-204Mechanical Synthesis and Heat Treatment of...

Mechanical Synthesis and Heat Treatment of Ni₇₅Ti₂₅ Alloy

Abstract:

The investigations of the microstructure changes of Ni₇₅Ti₂₅ powder prepared by mechanical alloying in as-milled state and after annealing treatment were performed. The X-ray diffraction (XRD) method was used to investigate a mechanically induced solid state reaction between nickel and titanium powders. The crystallite sizes and lattice strains were analyzed by using Williamson-Hall method. The compacted powder morphology was analyzed by SEM method. The Ni(Ti) solid solution was formed as a result of the milling process. The crystallite sizes of all alloys are below 100 nm. The annealing treatment, in the temperature range of 773 K to 1173 K leads to reduction of the breadth of Ni(Ti) diffraction lines, which indicates at the increase in size of crystallites. However, the phase composition of annealed Ti₇₅Ni₂₅ powder does not change, so the presence of any Ni-Ti intermetallic phases is not stated.