TITLE

Microstructures and Properties of Nanocrystalline NiFe Alloy With and Without Particulate TiC Reinforcement by Mechanical Alloying

AUTHOR(S)
Shirani Bidabadi, Mohammad; Saidi, Ali; Kasiri, Masoud; Ahmadi Renani, Mohammad; Chami, Akbar
PUB. DATE
October 2013
SOURCE
Metallurgical & Materials Transactions. Part A;Oct2013, Vol. 44 Issue 10, p4800
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
In the current study, NiFe alloy powders were prepared using a high-energy planetary ball mill. The effects of TiC addition (0, 5, 10, 20, and 30 wt pct) and milling time on the sequence of alloy formation, the microstructure, and microhardness of the product were studied. The structure of solid solution phase, the lattice parameter, lattice strain, and grain size were identified by X-ray diffraction analysis. The correlation between the apparent densities and the milling time is explained by the morphologic evolution of the powder particles occurring during the high-energy milling process. The powder morphology was examined using scanning electron microscopy. It was found that FCC γ (Fe-Ni) solid solution was formed after 10 hours of milling, and this time was reduced to 7 hours when TiC was added. Therefore, brittle particles (TiC) accelerate the milling process by increasing crystal defects leading to a shorter diffusion path. Observations of polished cross section showed uniform distribution of the reinforcement particles. The apparent density increases with the increasing TiC content. It was also found that the higher TiC amount leads to larger lattice parameter, higher internal strain, and lower grain size of the alloy.
ACCESSION #
89980502

 

Related Articles

  • Sintered Fe50Ni Alloy Produced by Mixing Iron and Nickel Powders. Rodrigues, Daniel; Concilio, Gilberto V.; Filho, Nelson Karsokas; de Castro, José Adilson; de Campos, Marcos Flavio // Materials Science Forum;2014, Vol. 802, p524 

    Fe50Ni alloys are used when very high magnetic permeabilities are necessary. Parts of these alloys can be produce by different mechanical processes. Metallurgical processes as investment casting and powder metallurgy can also be used. Sintered Fe50Ni parts have two disadvantages, in terms of...

  • Mechanical properties of submicron-grained TiAl alloys prepared by mechanical alloying. Oehring, M.; Appel, F. // Applied Physics Letters;2/20/1995, Vol. 66 Issue 8, p941 

    Examines the mechanical alloying preparation of TiAl powders with grain size of 15 nanometer by hot isotonic pressing. Exhibition of the material globular microstructure; Observation of Hall Petch type dependence on grain size of microhardness measurements; Decrease ductility at room...

  • Effect of Nanocrystalline Powders on the Structure and Properties of Dispersion-Hardened Alloy TiC – 40% KhN70Yu. Levashov, E. A.; Mishina, E. S.; Malochkin, O. V.; Stanskii, D. V.; Mour, J. J.; Fadeev, M. I. // Metallurgist;Mar/Apr2003, Vol. 47 Issue 3/4, p133 

    This article examines aspects of the effect of nanocrystalline powders of ZrO2, Al2O3, W, WC, WC–Co, NbC, and Si3N4 on the combustion, structure, and physical and physico-mechanical properties of new dispersion-hardened electrode alloy TiC – 40%KhN70Yu. This heat-resistant hard...

  • Electrochemical hydriding of nanocrystalline TiFe alloys. Abrashev, B.; Bliznakov, S.; Spassov, T.; Popov, A. // Journal of Applied Electrochemistry;Jul2007, Vol. 37 Issue 7, p871 

    Nanocrystalline TiFe alloys with different morphology and microstructure were synthesized by mechanical alloying from the elemental powders with varied milling time. The particle morphology distinctly changes from globular to slaty between the 10th and 15th h of milling and then becomes...

  • X-ray peak broadening analysis of FeNi nanocrystalline alloys prepared under different milling times and BPR using size strain plot (SSP) method. Hosseinzadeh, L.; Baedi, J.; Zak, A. // Bulletin of Materials Science;Aug2014, Vol. 37 Issue 5, p1147 

    FeNi nanocrystalline alloys were prepared by mechanical alloying method at different milling times of 2, 5, 10, 30, 50 and 70 h and ball powder ratios (BPR) of 10 : 1, 20 : 1 and 30 : 1. The structures of prepared powders were studied by X-ray diffraction (XRD). The broadening of the diffraction...

  • Thermal stability and mechanical properties of nanocrystalline Fe-Ni-Zr alloys prepared by mechanical alloying. Kotan, Hasan; Darling, Kris; Saber, Mostafa; Scattergood, Ronald; Koch, Carl // Journal of Materials Science;Dec2013, Vol. 48 Issue 24, p8402 

    The thermal stability of nanostructured FeNiZr alloys with Zr additions up to 4 at.% was investigated. This expands upon our previous results for Fe-Ni base alloys that were limited to 1 at.% Zr addition. Emphasis was placed on understanding the effects of composition and microstructural...

  • Nonhydrolytic sol-gel synthesis: Microstructural and morphological study on nickel ferrite nanocrystals coated with oleic acid. Yin, H.; Chow, G. M. // Journal of Materials Research;Jul2008, Vol. 23 Issue 7, p21 

    Nickel ferrite nanostructured particles coated with chemisorbed oleic acid were successfully synthesized by nonhydrolytic sol-gel method. By varying the composition of metal precursors, two microstructures were obtained, i.e., dispersed nanocrystals (9.7 ± 1.8 nm) and submicron aggregates...

  • Formation mechanism of TiC by mechanical alloying. Liu, Z.G.; Guo, J.T. // Applied Physics Letters;11/21/1994, Vol. 65 Issue 21, p2666 

    Investigates the synthesis of titanium carbide (TiC) by mechanical alloying (MA). Features of TiC formation; Implication of the initial milling stage for the incubation duration of the reaction; Importance of MA in highly exothermic alloy systems.

  • Equiaxed Nd–Fe–B fine powder with high performance prepared by mechanical alloying. Han, Jingzhi; Liu, Shunquan; Zhang, Xiaodong; Du, Honglin; Wang, Changsheng; Yang, Yingchang; Yue, Ming; Liu, Xubo // Journal of Applied Physics;5/1/2007, Vol. 101 Issue 9, p09K502 

    Equiaxed Nd11.9Fe76.9Co4.8B5.9Zr0.5 fine powders with high performance are fabricated by mechanical alloying method in this work. The mechanically alloyed Nd–Fe–B powders have a Br of 8.7 kG s, an iHc of 10 283 Oe, and a (BH)max of 15.03 MG Oe. Moreover, it is notable that the...

Share

Read the Article

Courtesy of THE LIBRARY OF VIRGINIA

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics