Preparation of Ni-Ti-Mo and Ni-Ti-Mo-Zr Alloys by High-Energy Ball Milling and Subsequent Hot Pressing

Gilda Maria Cortez Pereira; Marisa Aparecida de Souza; Tomaz Manabu Hashimoto; Vinicius André Rodrigues Henriques; Alfeu Saraiva Ramos

doi:10.4028/www.scientific.net/MSF.727-728.233

Paper Titles

Structural Evaluation of Mechanically Alloyed (67-x)Ti-xZr-22Si-11B Powders
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Effect of Molybdenum on the Formation of Ti₆Si₂B in Mechanically Alloyed Ti-Mo-Si-B Powders
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On the Phase Transformation in Mechanically Alloyed Ni-Nb and Ni-Ta and Ni-Nb-Ta Powders
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Structural Evaluation of Mechanically Alloyed and Heat-Treated Ti-25at-%Si Powders
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Preparation of Ni-Ti-Mo and Ni-Ti-Mo-Zr Alloys by High-Energy Ball Milling and Subsequent Hot Pressing
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Rheological Behavior of Blends Gas-Water Atomized Stainless Steel Powder
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Powder Injection Molding of Multimaterial Parts - Self Lubricating Steel Combined with Plain-Carbon Steel
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Investigation of Material Combinations Processed via Two-Component Metal Injection Moulding (2C-MIM)
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Processing and Manufacturing of Metal Matrix Aluminum Alloys Composites Reinforced by Silicon Carbide and Alumina through Powder Metallurgy Techniques
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HomeMaterials Science ForumMaterials Science Forum Vols. 727-728Preparation of Ni-Ti-Mo and Ni-Ti-Mo-Zr Alloys by...

Preparation of Ni-Ti-Mo and Ni-Ti-Mo-Zr Alloys by High-Energy Ball Milling and Subsequent Hot Pressing

Abstract:

This work discusses on the preparation of Ni-45Ti-5Mo, Ni-40Ti-10Mo and Ni-46Ti-2Mo-2Zr (at-%) alloys by high-energy ball milling and hot pressing, which are potentially attractive for dental and medical applications. The milling process was performed in stainless steel balls (19mm diameter) and vials (225 mL) using a rotary speed of 300rpm and a ball-to-powder weight ratio of 10:1. Hot pressing under vacuum was performed in a BN-coated graphite crucible at 900°C for 1 h using a load of 20 MPa. The milled and hot-pressed materials were characterized by X-ray diffraction, electron scanning microscopy, and electron dispersive spectrometry. Peaks of B2-NiTi and Ni₄Ti₃ were identified in XRD patterns of Ni-45Ti-5Mo, Ni-40Ti-10Mo and Ni-46Ti-2Mo-2Zr powders milled for 1h. The NiTi compound dissolved small Mo amounts lower than 4 at%, which were measured by EDS analysis. Moreover, it was identified the existence of an unknown Mo-rich phase in microstructures of the hot-pressed Ni-Ti-Mo alloys.

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Materials Science Forum (Volumes 727-728)

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233-238

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.727-728.233

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Online since:

August 2012

Authors:

Gilda Maria Cortez Pereira, Marisa Aparecida de Souza, Tomaz Manabu Hashimoto, Vinicius André Rodrigues Henriques, Alfeu Saraiva Ramos

Keywords:

Amorphous, Mechanical Alloying, Nickel Alloy, Nitinol

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