Preparation of Ni-50at% Ti Amorphous Alloy and Ni&lt;sub&gt;3&lt;/sub&gt;Al Intermetallic Compound by Mechanical Alloying

Esaki, Hiroki; Tokizane, Masaharu

doi:10.4028/www.scientific.net/msf.88-90.625

Cited by 9 publications

(2 citation statements)

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“…Esaki et al [26] and Pabi et al [27] have described the solid-state reactions of mixtures of the elemental Ni and Al powders during MA. It is shown that NiAl with B2 structure is the final state of MA equiatomic mixtures, while MA of mixtures of Ni 3 Al and NiAl 3 gives solid solutions with fcc or bcc structure [28].…”

Section: Introductionmentioning

confidence: 99%

Morphology and structure effect of Ti additive on the solid-state reaction between Ni and Al powders during mechanical alloying

Chérif

Bachaga

Saurina

et al. 2016

Int J Adv Manuf Technol

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In this study, the mixtures of Ni, Al, and Ti elemental powders with nominal compositions Ni-40at.% Al and Ni30at.% Al-10at.% Ti were fabricated by mechanically alloying technique. The structural and morphological changes during high-energy mechanical alloying were investigated by X-ray diffraction and scanning electron microscopy. Differences in the kinetics of solid-state reactions which depend on the differences in the individual properties were found. The final products of the mechanical alloying process were nanocrystalline fcc-Ni(Al) and fcc-Ni(Al, Ti) solid solutions with a mean crystallite sizes in the range of a few nanometers. As a result, although the Ti addition was found to accelerate the formation of the solid solution in Ni-Al alloy, it results in a coarser microstructure.

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Section: Introductionmentioning

confidence: 99%

Morphology and structure effect of Ti additive on the solid-state reaction between Ni and Al powders during mechanical alloying

Chérif

Bachaga

Saurina

et al. 2016

Int J Adv Manuf Technol

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“…By replacing this process with mechanical alloying (MA) process, it is fairly easy to fabricate the alloy powder and change the composition of the alloy as well. There are some reports [6][7][8][9] on the fabrication of Ti-Ni shape memory alloy powder by MA process, but the full MA conditions, the mechanical and shape memory characteristics of the sintered alloy have not been examined enough.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of TiNi Powder by Mechanical Alloying and Shape Memory Characteristics of the Sintered Alloy

et al. 2006

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This paper presents the fabrication condition of TiNi alloy powder by mechanical alloying and shape memory characteristics of the sintered alloy. The effect of mechanical alloying condition on the characteristics of mechanically alloyed powder (MA powder) was investigated. Also, the difference in sintering behavior between the MA powder and the elementally mixed powders by V-blender and the shape memory characteristics of the sintered alloys were also examined. The MA powder was fabricated by milling using a planetary ball mill in a rotational speed between 200 and 500 min À1 for various milling times in an atmosphere of Ar gas. These two types of powders prepared in different processes were sintered using a pulse-current pressure sintering equipment at various sintering temperatures. The powder agglomerated and its particle size became larger with an increase in milling time. The mixture of Ti and Ni powders changed into an amorphous state by processing for 3.6 ks over 300 min À1 . The sintered alloy of the MA powder showed more uniform phase of TiNi than that of the elementally mixed powders sintered in a same manner, however, the former showed a lower density than the latter due to a larger particle size of the MA powder of before-sintering. It was found from the measurement of the transformation temperature of the sintered alloy of the MA powder using DSC that the alloy has shape memory characteristics, and the transformation temperatures of the alloy are higher than those of the alloy of the elementally mixed powders due to waste of Ni powder.

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Phase transition of NiTi intermetallic compound induced by ball milling and subsequent heat treatment

Cui

Chen

et al. 1994

J Mater Sci Lett

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Preparation of Ni-50at% Ti Amorphous Alloy and Ni<sub>3</sub>Al Intermetallic Compound by Mechanical Alloying

Cited by 9 publications

References 0 publications

Morphology and structure effect of Ti additive on the solid-state reaction between Ni and Al powders during mechanical alloying

Morphology and structure effect of Ti additive on the solid-state reaction between Ni and Al powders during mechanical alloying

Fabrication of TiNi Powder by Mechanical Alloying and Shape Memory Characteristics of the Sintered Alloy

Phase transition of NiTi intermetallic compound induced by ball milling and subsequent heat treatment

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