Fabrication and evaluation of powder injection molded Fe–Ni sintered bodies using nano Fe–50%Ni powder

Injection molded Fe–Ni sintered bodies were fabricated using nano Fe–50%Ni powders having an average size of 80 nm. Their microstructures and material properties were investigated in relation to the composition and sintering temperature. The average grain size of a sintered body at 600 °C was 150 nm...

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Bibliographic Details
Published in:Journal of alloys and compounds 2010-02, Vol.491 (1), p.391-394
Main Authors: Kim, Ki Hyun, Lee, Byong-Taek, Choi, Chul-Jin
Format: Article
Language:English
Subjects:
Applied sciences
Exact sciences and technology
Metals and alloys
Metals. Metallurgy
Microstructure
Nanostructured materials
Powder metallurgy
Powder metallurgy. Composite materials
Production techniques
Sintering
Technology
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Summary:Injection molded Fe–Ni sintered bodies were fabricated using nano Fe–50%Ni powders having an average size of 80 nm. Their microstructures and material properties were investigated in relation to the composition and sintering temperature. The average grain size of a sintered body at 600 °C was 150 nm in diameter, while in a sample sintered at 900 °C, it was large size at about 500 nm in diameter. In a sample using 55(Fe–Ni)/45(binder), sintered at 900 °C, material properties of relative density, hardness and volume shrinkage showed the highest values, and the sample was a dense sintered body having fine grains about 400 nm in diameters, including twins and dislocations.
ISSN:0925-8388
1873-4669
DOI:10.1016/j.jallcom.2009.10.192